390 lines
75 KiB
XML
390 lines
75 KiB
XML
<document id="13852E99ABFCD058026E541CE5262F33" ID-CLB-Dataset="93239" ID-DOI="10.11646/zootaxa.5162.4.1" ID-GBIF-Dataset="7d343017-483e-43be-9439-d06e748fc54e" ID-ISSN="1175-5326" ID-Zenodo-Dep="6810290" ID-ZooBank="DD2279FA-E8F1-4951-A5CA-91082E875580" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1657270124299" checkinUser="plazi" docAuthor="Fortey, Richard A., Wernette, Shelly J. & Hughes, Nigel C." docDate="2022" docId="03CB87846E401D1FFF3AC5F64AC6F179" docLanguage="en" docName="zootaxa.5162.4.1.pdf" docOrigin="Zootaxa 5162 (4)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Birmanites yunnanensis" docType="treatment" docVersion="6" lastPageNumber="324" masterDocId="FFF2FFFC6E551D08FFADC4414A1BF54C" masterDocTitle="Revision of F. R. C. Reed’s Ordovician trilobite types from Myanmar (Burma) and western Yunnan Province, China" masterLastPageNumber="356" masterPageNumber="301" pageNumber="322" updateTime="1699356965331" updateUser="ExternalLinkService" zenodo-license-document="CLOSED">
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<mods:title id="95AC7727239752695FF0E6C583226AB8">Revision of F. R. C. Reed’s Ordovician trilobite types from Myanmar (Burma) and western Yunnan Province, China</mods:title>
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<mods:name id="48B6137B809F8B1E9D8F3E852E6F5905" type="personal">
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<mods:namePart id="9E0EB2EF78DA7FC89E6CAAC9C493304A">Fortey, Richard A.</mods:namePart>
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<mods:affiliation id="545B08FBFC393A39333C714261B59254">Department of Earth Sciences, Museum of Natural History, Cromwell Road, London, SW 7 5 BD, UK.</mods:affiliation>
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<mods:namePart id="60D3D2EBAFE459037951640F6751AA02">Wernette, Shelly J.</mods:namePart>
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<mods:affiliation id="95CB762944603DECD5CAC7BAC42F19B5">Department of Earth and Planetary Sciences, University of California, Riverside, CA 92521, USA. & Department of Geography and Environmental Studies, Texas State University, San Marcos, TX 78666, USA</mods:affiliation>
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<mods:namePart id="EBCE01080FFE2308E91F578DDA2F1206">Hughes, Nigel C.</mods:namePart>
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<mods:title id="F6BEB6E3464F36A728B93ABBB2FDD333">Zootaxa</mods:title>
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<mods:date id="C2028F95D04C5E5D734E53814821A821">2022</mods:date>
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<mods:number id="127F447FE5407207F228B2B1D7104494">2022-07-08</mods:number>
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<treatment id="03CB87846E401D1FFF3AC5F64AC6F179" ID-DOI="http://doi.org/10.5281/zenodo.6810308" ID-GBIF-Taxon="197214858" ID-Zenodo-Dep="6810308" LSID="urn:lsid:plazi:treatment:03CB87846E401D1FFF3AC5F64AC6F179" httpUri="http://treatment.plazi.org/id/03CB87846E401D1FFF3AC5F64AC6F179" lastPageId="23" lastPageNumber="324" pageId="21" pageNumber="322">
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<subSubSection id="C37865196E401D1DFF3AC5F6487AF49C" box="[151,609,438,465]" pageId="21" pageNumber="322" type="nomenclature">
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<paragraph id="8BDD36926E401D1DFF3AC5F6487AF49C" blockId="21.[151,609,438,501]" box="[151,609,438,465]" pageId="21" pageNumber="322">
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<heading id="D09581FE6E401D1DFF3AC5F6487AF49C" bold="true" box="[151,609,438,465]" fontSize="11" level="1" pageId="21" pageNumber="322" reason="1">
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<taxonomicName id="4C624D116E401D1DFF3AC5F6487AF49C" authority="(Reed, 1917)" baseAuthorityName="Reed" baseAuthorityYear="1917" box="[151,609,438,465]" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="21" pageNumber="322" phylum="Arthropoda" rank="species" species="yunnanensis">
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<emphasis id="B916EA806E401D1DFF3AC5F6487AF49C" bold="true" box="[151,609,438,465]" pageId="21" pageNumber="322">
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<emphasis id="B916EA806E401D1DFF3AC5F64BA6F49D" bold="true" box="[151,445,439,465]" italics="true" pageId="21" pageNumber="322">Birmanites yunnanensis</emphasis>
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(
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<bibRefCitation id="EFF34B636E401D1DFE60C5F74842F49C" author="Reed, F. R. C." box="[461,601,438,464]" pageId="21" pageNumber="322" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed, 1917</bibRefCitation>
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)
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</emphasis>
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</taxonomicName>
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</heading>
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</paragraph>
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||
</subSubSection>
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||
<subSubSection id="C37865196E401D1DFF3AC59A4956F7FE" pageId="21" pageNumber="322" type="description">
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||
<paragraph id="8BDD36926E401D1DFF3AC59A4B16F4B9" blockId="21.[151,609,438,501]" box="[151,269,475,501]" pageId="21" pageNumber="322">
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<figureCitation id="13592A176E401D1DFF3AC59A4B16F4B9" box="[151,269,475,501]" captionStart="FIGURE 8" captionStartId="22.[151,250,1587,1611]" captionTargetBox="[273,1314,181,1563]" captionTargetId="figure-29@22.[273,1314,181,1563]" captionTargetPageId="22" captionText="FIGURE 8. (1–6) Birmanites yunnanensis (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 1. Librigena (original of Reed 1917, pl. 7, fig. 3), GSI 11892. 2. Pygidium (original of Reed 1917, pl. 7, fig. 6), GSI 11895. 3. Pygidium (original of Reed 1917, pl. 7, fig. 8), GSI 11897. 4. Librigena (original of Reed 1917, pl. 7, fig. 5), GSI 11894. 5. Articulated specimen (original of Reed 1917, pl. 6, fig. 12), GSI 11887. 6. Cephalon (original of Reed 1917, pl. 6, fig. 14), GSI 11889. (7, 10) Remopleuriidae gen. et sp. indet. (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 7. Cranidium, (original of Reed 1917, pl. 6, fig. 9), GSI 11884. 10. Librigena (original of Reed 1917, pl. 6, fig. 10), GSI 11885. (8) Dolerobasilicus? sp. (Reed), Pygidium (original of Reed 1915, pl. 7, fig. 3), GSI 11535, Lower Naungkangyi Beds, Nawa, northern Shan State, Myanmar. (9) Nileus sp., Hypostome (original of Reed 1917, pl. 8, fig. 5), GSI 11904, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (11, 12) Niobe sp. (Reed). 11a, b. Pygidium (original of Reed 1915, pl. 5, fig. 14), GSI 11516, Hwe Mawng Beds (uppermost Katian), Nati, northern part of Shan State, Myanmar, original and retrodeformation. 12. Pygidium (original of Reed 1917, pl. 6, fig. 11), GSI 11886, Shihtien Formation (Darriwilian), Shidian, Baoshan Prefecture, western Yunnan, China. Scale bars = 5 mm for 1–6, 8, 9; = 2 mm for 7, 10–12)" figureDoi="http://doi.org/10.5281/zenodo.6810312" httpUri="https://zenodo.org/record/6810312/files/figure.png" pageId="21" pageNumber="322">Figs 8.1–6</figureCitation>
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</paragraph>
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<paragraph id="8BDD36926E401D1DFF3AC65E49D9F77B" blockId="21.[151,1175,543,690]" box="[151,962,543,567]" pageId="21" pageNumber="322">
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1917
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<taxonomicName id="4C624D116E401D1DFF5AC6614809F77B" authority="Reed" authorityName="Reed" authorityYear="1917" box="[247,530,543,567]" class="Trilobita" family="Asaphidae" genus="Ogygites" higherTaxonomySource="GBIF" kingdom="Animalia" order="Asaphida" pageId="21" pageNumber="322" phylum="Arthropoda" rank="species" species="yunnanensis">
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<emphasis id="B916EA806E401D1DFF5AC6614BCEF77B" box="[247,469,544,567]" italics="true" pageId="21" pageNumber="322">Ogygites yunnanensis</emphasis>
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Reed
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</taxonomicName>
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, p. 42-45, pl. 6, figs 12–14; pl. 7, figs 1–8.
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</paragraph>
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<paragraph id="8BDD36926E401D1DFF3AC67F4962F71A" blockId="21.[151,1175,543,690]" box="[151,889,574,598]" pageId="21" pageNumber="322">
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1951
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<taxonomicName id="4C624D116E401D1DFF5AC67F4831F71A" authority="(Reed)" baseAuthorityName="Reed" box="[247,554,574,598]" class="Trilobita" family="Asaphidae" genus="Basiliella" kingdom="Animalia" order="Asaphida" pageId="21" pageNumber="322" phylum="Arthropoda" rank="species" species="yunnanensis">
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<emphasis id="B916EA806E401D1DFF5AC67F4BC7F719" box="[247,476,574,598]" italics="true" pageId="21" pageNumber="322">Basiliella yunnanensis</emphasis>
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(Reed)
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</taxonomicName>
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; Kobayashi, p. 33, pl. 4, figs 7,8.
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</paragraph>
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<paragraph id="8BDD36926E401D1DFF3AC61D4E8CF738" blockId="21.[151,1175,543,690]" box="[151,1175,604,629]" pageId="21" pageNumber="322">
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1965
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<taxonomicName id="4C624D116E401D1DFF5AC61D4885F738" authority="(Reed)" baseAuthorityName="Reed" box="[247,670,604,629]" class="Trilobita" family="Asaphidae" genus="Basilicus" kingdom="Animalia" order="Asaphida" pageId="21" pageNumber="322" phylum="Arthropoda" rank="species" species="yunnanensis" subGenus="Basiliella">
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||
<emphasis id="B916EA806E401D1DFF5AC61D4B4FF738" box="[247,340,604,628]" italics="true" pageId="21" pageNumber="322">Basilicus</emphasis>
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||
(
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<emphasis id="B916EA806E401D1DFECEC61D4BDFF738" box="[355,452,604,628]" italics="true" pageId="21" pageNumber="322">Basiliella</emphasis>
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)
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<emphasis id="B916EA806E401D1DFE7EC61C484BF738" box="[467,592,605,628]" italics="true" pageId="21" pageNumber="322">yunnanensis</emphasis>
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(Reed)
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</taxonomicName>
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; Lu
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<emphasis id="B916EA806E401D1DFD66C61C48E3F738" box="[715,760,604,628]" italics="true" pageId="21" pageNumber="322">et al</emphasis>
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. p. 481–2, pl. 94, fig. 17,
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<emphasis id="B916EA806E401D1DFC52C61C4E3EF738" box="[1023,1061,605,628]" italics="true" pageId="21" pageNumber="322">non</emphasis>
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figs 15,16.
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</paragraph>
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||
<paragraph id="8BDD36926E401D1DFF3AC63A493BF7DF" blockId="21.[151,1175,543,690]" box="[151,800,635,659]" pageId="21" pageNumber="322">
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2008
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<taxonomicName id="4C624D116E401D1DFF5AC63D4823F7DF" authority="(Reed)" baseAuthorityName="Reed" baseAuthorityYear="1917" box="[247,568,635,659]" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="21" pageNumber="322" phylum="Arthropoda" rank="species" species="yunnanensis">
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<emphasis id="B916EA806E401D1DFF5AC63D4BF1F7DF" box="[247,490,636,659]" italics="true" pageId="21" pageNumber="322">Birmanites yunnanensis</emphasis>
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(Reed)
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</taxonomicName>
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; Zhou & Zhen, p. 236.
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</paragraph>
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<paragraph id="8BDD36926E401D1DFF3AC6DB4956F7FE" blockId="21.[151,1175,543,690]" box="[151,845,666,690]" pageId="21" pageNumber="322">
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2014
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<taxonomicName id="4C624D116E401D1DFF5AC6DB4823F7FE" authority="(Reed)" baseAuthorityName="Reed" baseAuthorityYear="1917" box="[247,568,666,690]" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="21" pageNumber="322" phylum="Arthropoda" rank="species" species="yunnanensis">
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<emphasis id="B916EA806E401D1DFF5AC6DB4BF1F7FD" box="[247,490,666,689]" italics="true" pageId="21" pageNumber="322">Birmanites yunnanensis</emphasis>
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(Reed)
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</taxonomicName>
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; Zhang
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<emphasis id="B916EA806E401D1DFD27C6DA48ADF7FE" box="[650,694,666,690]" italics="true" pageId="21" pageNumber="322">et al</emphasis>
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., figs 5.41F,G.
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</paragraph>
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</subSubSection>
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<subSubSection id="C37865196E401D1DFF3AC6A14E89F69F" pageId="21" pageNumber="322" type="materials_examined">
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<paragraph id="8BDD36926E401D1DFF3AC6A14E89F69F" blockId="21.[151,1437,736,2023]" pageId="21" pageNumber="322">
|
||
<emphasis id="B916EA806E401D1DFF3AC6A14B1DF7B6" bold="true" box="[151,262,736,762]" pageId="21" pageNumber="322">Material.</emphasis>
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<typeStatus id="54D988306E401D1DFEA3C6A04B65F7B7" box="[270,382,737,763]" pageId="21" pageNumber="322" type="lectotype">Lectotype</typeStatus>
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(selected here): articulated thorax, pygidium and incomplete cephalon,
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<figureCitation id="13592A176E401D1DFB01C6A14F18F7B7" box="[1196,1283,736,763]" captionStart="FIGURE 8" captionStartId="22.[151,250,1587,1611]" captionTargetBox="[273,1314,181,1563]" captionTargetId="figure-29@22.[273,1314,181,1563]" captionTargetPageId="22" captionText="FIGURE 8. (1–6) Birmanites yunnanensis (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 1. Librigena (original of Reed 1917, pl. 7, fig. 3), GSI 11892. 2. Pygidium (original of Reed 1917, pl. 7, fig. 6), GSI 11895. 3. Pygidium (original of Reed 1917, pl. 7, fig. 8), GSI 11897. 4. Librigena (original of Reed 1917, pl. 7, fig. 5), GSI 11894. 5. Articulated specimen (original of Reed 1917, pl. 6, fig. 12), GSI 11887. 6. Cephalon (original of Reed 1917, pl. 6, fig. 14), GSI 11889. (7, 10) Remopleuriidae gen. et sp. indet. (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 7. Cranidium, (original of Reed 1917, pl. 6, fig. 9), GSI 11884. 10. Librigena (original of Reed 1917, pl. 6, fig. 10), GSI 11885. (8) Dolerobasilicus? sp. (Reed), Pygidium (original of Reed 1915, pl. 7, fig. 3), GSI 11535, Lower Naungkangyi Beds, Nawa, northern Shan State, Myanmar. (9) Nileus sp., Hypostome (original of Reed 1917, pl. 8, fig. 5), GSI 11904, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (11, 12) Niobe sp. (Reed). 11a, b. Pygidium (original of Reed 1915, pl. 5, fig. 14), GSI 11516, Hwe Mawng Beds (uppermost Katian), Nati, northern part of Shan State, Myanmar, original and retrodeformation. 12. Pygidium (original of Reed 1917, pl. 6, fig. 11), GSI 11886, Shihtien Formation (Darriwilian), Shidian, Baoshan Prefecture, western Yunnan, China. Scale bars = 5 mm for 1–6, 8, 9; = 2 mm for 7, 10–12)" figureDoi="http://doi.org/10.5281/zenodo.6810312" httpUri="https://zenodo.org/record/6810312/files/figure.png" pageId="21" pageNumber="322">Fig. 8.5</figureCitation>
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||
(
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<bibRefCitation id="EFF34B636E401D1DFABEC6A14F83F7B6" author="Reed, F. R. C." box="[1299,1432,736,762]" pageId="21" pageNumber="322" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed, 1917</bibRefCitation>
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||
, pl. 6, fig. 12 and pl. 7, fig. 4; refigured
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<bibRefCitation id="EFF34B636E401D1DFDFFC74448E9F653" author="Lu, Y. - H. & Chang, W. - T. & Chu, C. - L. & Chien, Y. - Y. & Hsiang, L. - W." box="[594,754,772,799]" pageId="21" pageNumber="322" refId="ref45722" refString="Lu, Y. - H., Chang, W. - T., Chu, C. - L., Chien, Y. - Y. & Hsiang, L. - W. (1965) Chinese fossils of all groups, Trilobita, 2 volumes. Science Press, Beijing, 766 pp. [in Chinese]." type="book" year="1965">Lu et al. 1965</bibRefCitation>
|
||
, pl. 94, fig. 17),
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<collectionCode id="ED73AE576E401D1DFC03C74549C0F652" box="[942,987,772,798]" country="India" httpUri="http://grbio.org/cool/jprb-qxkv" name="Geological Survey of India" pageId="21" pageNumber="322">GSI</collectionCode>
|
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11887 and 11893. Assigned specimens: free cheeks,
|
||
<figureCitation id="13592A176E401D1DFE88C7694BAAF60E" box="[293,433,808,834]" captionStart="FIGURE 8" captionStartId="22.[151,250,1587,1611]" captionTargetBox="[273,1314,181,1563]" captionTargetId="figure-29@22.[273,1314,181,1563]" captionTargetPageId="22" captionText="FIGURE 8. (1–6) Birmanites yunnanensis (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 1. Librigena (original of Reed 1917, pl. 7, fig. 3), GSI 11892. 2. Pygidium (original of Reed 1917, pl. 7, fig. 6), GSI 11895. 3. Pygidium (original of Reed 1917, pl. 7, fig. 8), GSI 11897. 4. Librigena (original of Reed 1917, pl. 7, fig. 5), GSI 11894. 5. Articulated specimen (original of Reed 1917, pl. 6, fig. 12), GSI 11887. 6. Cephalon (original of Reed 1917, pl. 6, fig. 14), GSI 11889. (7, 10) Remopleuriidae gen. et sp. indet. (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 7. Cranidium, (original of Reed 1917, pl. 6, fig. 9), GSI 11884. 10. Librigena (original of Reed 1917, pl. 6, fig. 10), GSI 11885. (8) Dolerobasilicus? sp. (Reed), Pygidium (original of Reed 1915, pl. 7, fig. 3), GSI 11535, Lower Naungkangyi Beds, Nawa, northern Shan State, Myanmar. (9) Nileus sp., Hypostome (original of Reed 1917, pl. 8, fig. 5), GSI 11904, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (11, 12) Niobe sp. (Reed). 11a, b. Pygidium (original of Reed 1915, pl. 5, fig. 14), GSI 11516, Hwe Mawng Beds (uppermost Katian), Nati, northern part of Shan State, Myanmar, original and retrodeformation. 12. Pygidium (original of Reed 1917, pl. 6, fig. 11), GSI 11886, Shihtien Formation (Darriwilian), Shidian, Baoshan Prefecture, western Yunnan, China. Scale bars = 5 mm for 1–6, 8, 9; = 2 mm for 7, 10–12)" figureDoi="http://doi.org/10.5281/zenodo.6810312" httpUri="https://zenodo.org/record/6810312/files/figure.png" pageId="21" pageNumber="322">Figs 8.4, 8.6</figureCitation>
|
||
(
|
||
<bibRefCitation id="EFF34B636E401D1DFE6CC769485EF60E" author="Reed, F. R. C." box="[449,581,808,834]" pageId="21" pageNumber="322" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed, 1917</bibRefCitation>
|
||
, pl. 7, fig. 5; pl. 6, figs 13/14; pl. 7, fig. 3, respectively),
|
||
<collectionCode id="ED73AE576E401D1DFB65C7694EEEF60E" box="[1224,1269,808,834]" country="India" httpUri="http://grbio.org/cool/jprb-qxkv" name="Geological Survey of India" pageId="21" pageNumber="322">GSI</collectionCode>
|
||
11894, 11889, 11892, respectively; pygidia,
|
||
<figureCitation id="13592A176E401D1DFE4DC70D4872F62A" box="[480,617,844,870]" captionStart="FIGURE 8" captionStartId="22.[151,250,1587,1611]" captionTargetBox="[273,1314,181,1563]" captionTargetId="figure-29@22.[273,1314,181,1563]" captionTargetPageId="22" captionText="FIGURE 8. (1–6) Birmanites yunnanensis (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 1. Librigena (original of Reed 1917, pl. 7, fig. 3), GSI 11892. 2. Pygidium (original of Reed 1917, pl. 7, fig. 6), GSI 11895. 3. Pygidium (original of Reed 1917, pl. 7, fig. 8), GSI 11897. 4. Librigena (original of Reed 1917, pl. 7, fig. 5), GSI 11894. 5. Articulated specimen (original of Reed 1917, pl. 6, fig. 12), GSI 11887. 6. Cephalon (original of Reed 1917, pl. 6, fig. 14), GSI 11889. (7, 10) Remopleuriidae gen. et sp. indet. (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 7. Cranidium, (original of Reed 1917, pl. 6, fig. 9), GSI 11884. 10. Librigena (original of Reed 1917, pl. 6, fig. 10), GSI 11885. (8) Dolerobasilicus? sp. (Reed), Pygidium (original of Reed 1915, pl. 7, fig. 3), GSI 11535, Lower Naungkangyi Beds, Nawa, northern Shan State, Myanmar. (9) Nileus sp., Hypostome (original of Reed 1917, pl. 8, fig. 5), GSI 11904, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (11, 12) Niobe sp. (Reed). 11a, b. Pygidium (original of Reed 1915, pl. 5, fig. 14), GSI 11516, Hwe Mawng Beds (uppermost Katian), Nati, northern part of Shan State, Myanmar, original and retrodeformation. 12. Pygidium (original of Reed 1917, pl. 6, fig. 11), GSI 11886, Shihtien Formation (Darriwilian), Shidian, Baoshan Prefecture, western Yunnan, China. Scale bars = 5 mm for 1–6, 8, 9; = 2 mm for 7, 10–12)" figureDoi="http://doi.org/10.5281/zenodo.6810312" httpUri="https://zenodo.org/record/6810312/files/figure.png" pageId="21" pageNumber="322">Figs 8.2, 8.3</figureCitation>
|
||
(
|
||
<bibRefCitation id="EFF34B636E401D1DFDDAC70D48E1F62A" author="Reed, F. R. C." box="[631,762,844,870]" pageId="21" pageNumber="322" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed, 1917</bibRefCitation>
|
||
, pl. 7, figs 8, 6 respectively)
|
||
<collectionCode id="ED73AE576E401D1DFB95C70D4E7EF62A" box="[1080,1125,844,870]" country="India" httpUri="http://grbio.org/cool/jprb-qxkv" name="Geological Survey of India" pageId="21" pageNumber="322">GSI</collectionCode>
|
||
11897, 11895, respectively.
|
||
<bibRefCitation id="EFF34B636E401D1DFF3AC7314B3AF6C6" author="Reed, F. R. C." box="[151,289,880,906]" pageId="21" pageNumber="322" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed (1917)</bibRefCitation>
|
||
also figured fragmentary thoracic segments and other pieces of cephalic exoskeleton that were not cast: thoracic segments pl. 7, figs 1, 2,
|
||
<collectionCode id="ED73AE576E401D1DFDA2C7D54827F6E2" box="[527,572,916,942]" country="India" httpUri="http://grbio.org/cool/jprb-qxkv" name="Geological Survey of India" pageId="21" pageNumber="322">GSI</collectionCode>
|
||
11890, 11891, respectively; pygidium pl. 7, fig. 7,
|
||
<collectionCode id="ED73AE576E401D1DFBD5C7D54EBEF6E2" box="[1144,1189,916,942]" country="India" httpUri="http://grbio.org/cool/jprb-qxkv" name="Geological Survey of India" pageId="21" pageNumber="322">GSI</collectionCode>
|
||
11896. All specimens from the Shihtien Formation (Darriwilian) at Pupiao, Baoshan Prefecture, western
|
||
<collectingRegion id="49A6F8706E401D1DFB98C7F84E95F69F" box="[1077,1166,953,979]" country="China" name="Yunnan" pageId="21" pageNumber="322">Yunnan</collectingRegion>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C37865196E401D1DFF6AC79D4811F2AA" pageId="21" pageNumber="322" type="description">
|
||
<paragraph id="8BDD36926E401D1DFF6AC79D4811F2AA" blockId="21.[151,1437,736,2023]" pageId="21" pageNumber="322">
|
||
<emphasis id="B916EA806E401D1DFF6AC79D4B4AF6BA" bold="true" box="[199,337,988,1014]" pageId="21" pageNumber="322">Description</emphasis>
|
||
. The original material of
|
||
<bibRefCitation id="EFF34B636E401D1DFD2EC79D4909F6BA" author="Reed, F. R. C." box="[643,786,988,1014]" pageId="21" pageNumber="322" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed (1917)</bibRefCitation>
|
||
is only slightly distorted and presumably also flattened to some degree. The most complete articulated specimen is not preserved at the front, but the exoskeleton must have been about 1.6-1.7 times longer than wide, and the sag. length of the thorax is close to that of the pygidium. Since there is no associated cranidium its shape has to be inferred from the outline of the facial sutures, which are strongly divergent in front of the eyes. We can estimate that the sag. length of the cranidium in front of the eyes was greater than its length behind them, but less so than on
|
||
<taxonomicName id="4C624D116E401D1DFCA6C0D049B2F1E6" baseAuthorityName="Reed" baseAuthorityYear="1915" box="[779,937,1168,1194]" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="21" pageNumber="322" phylum="Arthropoda" rank="species" species="birmanicus">
|
||
<emphasis id="B916EA806E401D1DFCA6C0D049B2F1E6" box="[779,937,1168,1194]" italics="true" pageId="21" pageNumber="322">B. birmanicus</emphasis>
|
||
</taxonomicName>
|
||
, such that the anterior part of the cranidium was presumably wide and flattened. A well preserved cranidium from the Shihtien Formation figured by
|
||
<bibRefCitation id="EFF34B636E401D1DFA94C0F54AE4F1BE" author="Zhang, Y. - D. & Wang, Y. & Zhan, R. - B. & Fan, J. - X. & Zhou, Z. & Fang, X." pageId="21" pageNumber="322" refId="ref49148" refString="Zhang, Y. - D., Wang, Y., Zhan, R. - B., Fan, J. - X., Zhou, Z. - Q & Fang, X. (2014) Ordovician and Silurian Stratigraphy and Palaeontology of Yunnan, Southwest China. A guide to the field excursion across the South China, Indochina and Sibumasu. IGCP Project 591. Science Press, Beijing, 138 pp." type="book" year="2014">
|
||
Zhang
|
||
<emphasis id="B916EA806E401D1DFA25C0F44AAFF1BE" italics="true" pageId="21" pageNumber="322">et al.</emphasis>
|
||
(2014
|
||
</bibRefCitation>
|
||
, fig. 5.41F) confirms these estimations and shows a prominent posteromedian glabellar tubercle. Smaller free cheeks show a lateral border and it was likely that these extended on to the cranidium at small size (e.g.
|
||
<figureCitation id="13592A176E401D1DFADDC0BD4AA0F076" captionStart="FIGURE 8" captionStartId="22.[151,250,1587,1611]" captionTargetBox="[273,1314,181,1563]" captionTargetId="figure-29@22.[273,1314,181,1563]" captionTargetPageId="22" captionText="FIGURE 8. (1–6) Birmanites yunnanensis (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 1. Librigena (original of Reed 1917, pl. 7, fig. 3), GSI 11892. 2. Pygidium (original of Reed 1917, pl. 7, fig. 6), GSI 11895. 3. Pygidium (original of Reed 1917, pl. 7, fig. 8), GSI 11897. 4. Librigena (original of Reed 1917, pl. 7, fig. 5), GSI 11894. 5. Articulated specimen (original of Reed 1917, pl. 6, fig. 12), GSI 11887. 6. Cephalon (original of Reed 1917, pl. 6, fig. 14), GSI 11889. (7, 10) Remopleuriidae gen. et sp. indet. (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 7. Cranidium, (original of Reed 1917, pl. 6, fig. 9), GSI 11884. 10. Librigena (original of Reed 1917, pl. 6, fig. 10), GSI 11885. (8) Dolerobasilicus? sp. (Reed), Pygidium (original of Reed 1915, pl. 7, fig. 3), GSI 11535, Lower Naungkangyi Beds, Nawa, northern Shan State, Myanmar. (9) Nileus sp., Hypostome (original of Reed 1917, pl. 8, fig. 5), GSI 11904, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (11, 12) Niobe sp. (Reed). 11a, b. Pygidium (original of Reed 1915, pl. 5, fig. 14), GSI 11516, Hwe Mawng Beds (uppermost Katian), Nati, northern part of Shan State, Myanmar, original and retrodeformation. 12. Pygidium (original of Reed 1917, pl. 6, fig. 11), GSI 11886, Shihtien Formation (Darriwilian), Shidian, Baoshan Prefecture, western Yunnan, China. Scale bars = 5 mm for 1–6, 8, 9; = 2 mm for 7, 10–12)" figureDoi="http://doi.org/10.5281/zenodo.6810312" httpUri="https://zenodo.org/record/6810312/files/figure.png" pageId="21" pageNumber="322">Fig. 8.4</figureCitation>
|
||
) but probably effaced on larger individuals (e.g.
|
||
<figureCitation id="13592A176E401D1DFD45C1614920F076" box="[744,827,1312,1338]" captionStart="FIGURE 8" captionStartId="22.[151,250,1587,1611]" captionTargetBox="[273,1314,181,1563]" captionTargetId="figure-29@22.[273,1314,181,1563]" captionTargetPageId="22" captionText="FIGURE 8. (1–6) Birmanites yunnanensis (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 1. Librigena (original of Reed 1917, pl. 7, fig. 3), GSI 11892. 2. Pygidium (original of Reed 1917, pl. 7, fig. 6), GSI 11895. 3. Pygidium (original of Reed 1917, pl. 7, fig. 8), GSI 11897. 4. Librigena (original of Reed 1917, pl. 7, fig. 5), GSI 11894. 5. Articulated specimen (original of Reed 1917, pl. 6, fig. 12), GSI 11887. 6. Cephalon (original of Reed 1917, pl. 6, fig. 14), GSI 11889. (7, 10) Remopleuriidae gen. et sp. indet. (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 7. Cranidium, (original of Reed 1917, pl. 6, fig. 9), GSI 11884. 10. Librigena (original of Reed 1917, pl. 6, fig. 10), GSI 11885. (8) Dolerobasilicus? sp. (Reed), Pygidium (original of Reed 1915, pl. 7, fig. 3), GSI 11535, Lower Naungkangyi Beds, Nawa, northern Shan State, Myanmar. (9) Nileus sp., Hypostome (original of Reed 1917, pl. 8, fig. 5), GSI 11904, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (11, 12) Niobe sp. (Reed). 11a, b. Pygidium (original of Reed 1915, pl. 5, fig. 14), GSI 11516, Hwe Mawng Beds (uppermost Katian), Nati, northern part of Shan State, Myanmar, original and retrodeformation. 12. Pygidium (original of Reed 1917, pl. 6, fig. 11), GSI 11886, Shihtien Formation (Darriwilian), Shidian, Baoshan Prefecture, western Yunnan, China. Scale bars = 5 mm for 1–6, 8, 9; = 2 mm for 7, 10–12)" figureDoi="http://doi.org/10.5281/zenodo.6810312" httpUri="https://zenodo.org/record/6810312/files/figure.png" pageId="21" pageNumber="322">Fig 8.1</figureCitation>
|
||
). Since the thoracic axis is well-defined it is probable that this continued into the axial furrows also defining the glabella. The strongly curved eyes are elevated on eye socles, length (exsag.) about 30% that of cranidium to judge from the unseparated free cheeks on
|
||
<figureCitation id="13592A176E401D1DFB5FC1294F56F0CE" box="[1266,1357,1384,1410]" captionStart="FIGURE 8" captionStartId="22.[151,250,1587,1611]" captionTargetBox="[273,1314,181,1563]" captionTargetId="figure-29@22.[273,1314,181,1563]" captionTargetPageId="22" captionText="FIGURE 8. (1–6) Birmanites yunnanensis (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 1. Librigena (original of Reed 1917, pl. 7, fig. 3), GSI 11892. 2. Pygidium (original of Reed 1917, pl. 7, fig. 6), GSI 11895. 3. Pygidium (original of Reed 1917, pl. 7, fig. 8), GSI 11897. 4. Librigena (original of Reed 1917, pl. 7, fig. 5), GSI 11894. 5. Articulated specimen (original of Reed 1917, pl. 6, fig. 12), GSI 11887. 6. Cephalon (original of Reed 1917, pl. 6, fig. 14), GSI 11889. (7, 10) Remopleuriidae gen. et sp. indet. (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 7. Cranidium, (original of Reed 1917, pl. 6, fig. 9), GSI 11884. 10. Librigena (original of Reed 1917, pl. 6, fig. 10), GSI 11885. (8) Dolerobasilicus? sp. (Reed), Pygidium (original of Reed 1915, pl. 7, fig. 3), GSI 11535, Lower Naungkangyi Beds, Nawa, northern Shan State, Myanmar. (9) Nileus sp., Hypostome (original of Reed 1917, pl. 8, fig. 5), GSI 11904, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (11, 12) Niobe sp. (Reed). 11a, b. Pygidium (original of Reed 1915, pl. 5, fig. 14), GSI 11516, Hwe Mawng Beds (uppermost Katian), Nati, northern part of Shan State, Myanmar, original and retrodeformation. 12. Pygidium (original of Reed 1917, pl. 6, fig. 11), GSI 11886, Shihtien Formation (Darriwilian), Shidian, Baoshan Prefecture, western Yunnan, China. Scale bars = 5 mm for 1–6, 8, 9; = 2 mm for 7, 10–12)" figureDoi="http://doi.org/10.5281/zenodo.6810312" httpUri="https://zenodo.org/record/6810312/files/figure.png" pageId="21" pageNumber="322">Fig. 8.6</figureCitation>
|
||
. Genal lateral border well-developed, particularly on smaller free cheeks, which are extended into stout genal spines, but a certain amount of crushing may have exaggerated the concavity of the border, which is hardly developed on the specimen in
|
||
<figureCitation id="13592A176E401D1DFE8EC1954B67F0A2" box="[291,380,1492,1518]" captionStart="FIGURE 8" captionStartId="22.[151,250,1587,1611]" captionTargetBox="[273,1314,181,1563]" captionTargetId="figure-29@22.[273,1314,181,1563]" captionTargetPageId="22" captionText="FIGURE 8. (1–6) Birmanites yunnanensis (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 1. Librigena (original of Reed 1917, pl. 7, fig. 3), GSI 11892. 2. Pygidium (original of Reed 1917, pl. 7, fig. 6), GSI 11895. 3. Pygidium (original of Reed 1917, pl. 7, fig. 8), GSI 11897. 4. Librigena (original of Reed 1917, pl. 7, fig. 5), GSI 11894. 5. Articulated specimen (original of Reed 1917, pl. 6, fig. 12), GSI 11887. 6. Cephalon (original of Reed 1917, pl. 6, fig. 14), GSI 11889. (7, 10) Remopleuriidae gen. et sp. indet. (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 7. Cranidium, (original of Reed 1917, pl. 6, fig. 9), GSI 11884. 10. Librigena (original of Reed 1917, pl. 6, fig. 10), GSI 11885. (8) Dolerobasilicus? sp. (Reed), Pygidium (original of Reed 1915, pl. 7, fig. 3), GSI 11535, Lower Naungkangyi Beds, Nawa, northern Shan State, Myanmar. (9) Nileus sp., Hypostome (original of Reed 1917, pl. 8, fig. 5), GSI 11904, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (11, 12) Niobe sp. (Reed). 11a, b. Pygidium (original of Reed 1915, pl. 5, fig. 14), GSI 11516, Hwe Mawng Beds (uppermost Katian), Nati, northern part of Shan State, Myanmar, original and retrodeformation. 12. Pygidium (original of Reed 1917, pl. 6, fig. 11), GSI 11886, Shihtien Formation (Darriwilian), Shidian, Baoshan Prefecture, western Yunnan, China. Scale bars = 5 mm for 1–6, 8, 9; = 2 mm for 7, 10–12)" figureDoi="http://doi.org/10.5281/zenodo.6810312" httpUri="https://zenodo.org/record/6810312/files/figure.png" pageId="21" pageNumber="322">Fig. 8.4</figureCitation>
|
||
. This specimen also shows the typically wide genal doublure of
|
||
<taxonomicName id="4C624D116E401D1DFBE9C1944EA4F0A2" authorityName="Sheng" authorityYear="1934" box="[1092,1215,1493,1518]" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="21" pageNumber="322" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B916EA806E401D1DFBE9C1944EA4F0A2" box="[1092,1215,1493,1518]" italics="true" pageId="21" pageNumber="322">Birmanites</emphasis>
|
||
</taxonomicName>
|
||
, with sparse terrace ridges. Paradoublural line on the right-hand side of the specimen in
|
||
<figureCitation id="13592A176E401D1DFC05C1B94E1AF35E" box="[936,1025,1528,1554]" captionStart="FIGURE 8" captionStartId="22.[151,250,1587,1611]" captionTargetBox="[273,1314,181,1563]" captionTargetId="figure-29@22.[273,1314,181,1563]" captionTargetPageId="22" captionText="FIGURE 8. (1–6) Birmanites yunnanensis (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 1. Librigena (original of Reed 1917, pl. 7, fig. 3), GSI 11892. 2. Pygidium (original of Reed 1917, pl. 7, fig. 6), GSI 11895. 3. Pygidium (original of Reed 1917, pl. 7, fig. 8), GSI 11897. 4. Librigena (original of Reed 1917, pl. 7, fig. 5), GSI 11894. 5. Articulated specimen (original of Reed 1917, pl. 6, fig. 12), GSI 11887. 6. Cephalon (original of Reed 1917, pl. 6, fig. 14), GSI 11889. (7, 10) Remopleuriidae gen. et sp. indet. (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 7. Cranidium, (original of Reed 1917, pl. 6, fig. 9), GSI 11884. 10. Librigena (original of Reed 1917, pl. 6, fig. 10), GSI 11885. (8) Dolerobasilicus? sp. (Reed), Pygidium (original of Reed 1915, pl. 7, fig. 3), GSI 11535, Lower Naungkangyi Beds, Nawa, northern Shan State, Myanmar. (9) Nileus sp., Hypostome (original of Reed 1917, pl. 8, fig. 5), GSI 11904, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (11, 12) Niobe sp. (Reed). 11a, b. Pygidium (original of Reed 1915, pl. 5, fig. 14), GSI 11516, Hwe Mawng Beds (uppermost Katian), Nati, northern part of Shan State, Myanmar, original and retrodeformation. 12. Pygidium (original of Reed 1917, pl. 6, fig. 11), GSI 11886, Shihtien Formation (Darriwilian), Shidian, Baoshan Prefecture, western Yunnan, China. Scale bars = 5 mm for 1–6, 8, 9; = 2 mm for 7, 10–12)" figureDoi="http://doi.org/10.5281/zenodo.6810312" httpUri="https://zenodo.org/record/6810312/files/figure.png" pageId="21" pageNumber="322">Fig. 8.6</figureCitation>
|
||
suggests that the doublure was less extensive at smaller size. The thorax shows somewhat zetoidal axial furrows and axial rings of uniform transverse width. Thoracic pleurae widen backwards. Left-hand side of thorax
|
||
<figureCitation id="13592A176E401D1DFC28C20149C1F317" box="[901,986,1600,1627]" captionStart="FIGURE 8" captionStartId="22.[151,250,1587,1611]" captionTargetBox="[273,1314,181,1563]" captionTargetId="figure-29@22.[273,1314,181,1563]" captionTargetPageId="22" captionText="FIGURE 8. (1–6) Birmanites yunnanensis (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 1. Librigena (original of Reed 1917, pl. 7, fig. 3), GSI 11892. 2. Pygidium (original of Reed 1917, pl. 7, fig. 6), GSI 11895. 3. Pygidium (original of Reed 1917, pl. 7, fig. 8), GSI 11897. 4. Librigena (original of Reed 1917, pl. 7, fig. 5), GSI 11894. 5. Articulated specimen (original of Reed 1917, pl. 6, fig. 12), GSI 11887. 6. Cephalon (original of Reed 1917, pl. 6, fig. 14), GSI 11889. (7, 10) Remopleuriidae gen. et sp. indet. (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 7. Cranidium, (original of Reed 1917, pl. 6, fig. 9), GSI 11884. 10. Librigena (original of Reed 1917, pl. 6, fig. 10), GSI 11885. (8) Dolerobasilicus? sp. (Reed), Pygidium (original of Reed 1915, pl. 7, fig. 3), GSI 11535, Lower Naungkangyi Beds, Nawa, northern Shan State, Myanmar. (9) Nileus sp., Hypostome (original of Reed 1917, pl. 8, fig. 5), GSI 11904, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (11, 12) Niobe sp. (Reed). 11a, b. Pygidium (original of Reed 1915, pl. 5, fig. 14), GSI 11516, Hwe Mawng Beds (uppermost Katian), Nati, northern part of Shan State, Myanmar, original and retrodeformation. 12. Pygidium (original of Reed 1917, pl. 6, fig. 11), GSI 11886, Shihtien Formation (Darriwilian), Shidian, Baoshan Prefecture, western Yunnan, China. Scale bars = 5 mm for 1–6, 8, 9; = 2 mm for 7, 10–12)" figureDoi="http://doi.org/10.5281/zenodo.6810312" httpUri="https://zenodo.org/record/6810312/files/figure.png" pageId="21" pageNumber="322">Fig. 8.5</figureCitation>
|
||
has flaked off to show the dorsal surface of reflexed doublure which extends under distal parts of pleural furrows; distal tips of pleurae apparently blunt, or at most shortly spinose. Pygidium in range 1.3 to 1.6 times wider than long, with very weak, slightly flatter border most noticeable behind axis; the latter extending to 70-75% pygidial length. Narrow axis, axial furrows enclosing an angle of about 20 degrees, and three times or more as long as wide, with maximum width immediately behind thorax, tapering uniformly posteriorly. 5 or 6 clearly-defined axial rings slightly decreasing in width (sag.) posteriorly, and clear ring furrows a little wider and more diffuse medially. Articulating facet extends halfway or more across pleural field. Six pairs gently curved pleural furrows progressively more posteriorly directed and then shorter, the gently convex ribs between them also narrowing (exsag.). Ribs fade at the border. Doublure clearly seen on composite
|
||
<figureCitation id="13592A176E401D1DFF4CC3C54B20F2D2" box="[225,315,1924,1950]" captionStart="FIGURE 8" captionStartId="22.[151,250,1587,1611]" captionTargetBox="[273,1314,181,1563]" captionTargetId="figure-29@22.[273,1314,181,1563]" captionTargetPageId="22" captionText="FIGURE 8. (1–6) Birmanites yunnanensis (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 1. Librigena (original of Reed 1917, pl. 7, fig. 3), GSI 11892. 2. Pygidium (original of Reed 1917, pl. 7, fig. 6), GSI 11895. 3. Pygidium (original of Reed 1917, pl. 7, fig. 8), GSI 11897. 4. Librigena (original of Reed 1917, pl. 7, fig. 5), GSI 11894. 5. Articulated specimen (original of Reed 1917, pl. 6, fig. 12), GSI 11887. 6. Cephalon (original of Reed 1917, pl. 6, fig. 14), GSI 11889. (7, 10) Remopleuriidae gen. et sp. indet. (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 7. Cranidium, (original of Reed 1917, pl. 6, fig. 9), GSI 11884. 10. Librigena (original of Reed 1917, pl. 6, fig. 10), GSI 11885. (8) Dolerobasilicus? sp. (Reed), Pygidium (original of Reed 1915, pl. 7, fig. 3), GSI 11535, Lower Naungkangyi Beds, Nawa, northern Shan State, Myanmar. (9) Nileus sp., Hypostome (original of Reed 1917, pl. 8, fig. 5), GSI 11904, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (11, 12) Niobe sp. (Reed). 11a, b. Pygidium (original of Reed 1915, pl. 5, fig. 14), GSI 11516, Hwe Mawng Beds (uppermost Katian), Nati, northern part of Shan State, Myanmar, original and retrodeformation. 12. Pygidium (original of Reed 1917, pl. 6, fig. 11), GSI 11886, Shihtien Formation (Darriwilian), Shidian, Baoshan Prefecture, western Yunnan, China. Scale bars = 5 mm for 1–6, 8, 9; = 2 mm for 7, 10–12)" figureDoi="http://doi.org/10.5281/zenodo.6810312" httpUri="https://zenodo.org/record/6810312/files/figure.png" pageId="21" pageNumber="322">Fig. 8.2</figureCitation>
|
||
, very broad, curving back almost to axis, and with series of widely spaced terrace ridges typical for genus. The
|
||
<typeStatus id="54D988306E401D1DFEB7C3E94B9AF28E" box="[282,385,1960,1986]" pageId="21" pageNumber="322" type="lectotype">lectotype</typeStatus>
|
||
shows evidence of fine raised lines running subparallel to the pygidial margin, but otherwise there is no evidence of sculpture.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<caption id="DF1D661A6E431D1EFF3AC2724BBEF2B7" ID-DOI="http://doi.org/10.5281/zenodo.6810312" ID-Zenodo-Dep="6810312" httpUri="https://zenodo.org/record/6810312/files/figure.png" pageId="22" pageNumber="323" startId="22.[151,250,1587,1611]" targetBox="[273,1314,181,1563]" targetPageId="22">
|
||
<paragraph id="8BDD36926E431D1EFF3AC2724BBEF2B7" blockId="22.[151,1437,1587,2043]" pageId="22" pageNumber="323">
|
||
<emphasis id="B916EA806E431D1EFF3AC2724B0DF307" bold="true" box="[151,278,1587,1611]" pageId="22" pageNumber="323">FIGURE 8.</emphasis>
|
||
(1–6)
|
||
<taxonomicName id="4C624D116E431D1EFECDC27548BFF307" authority="(Reed)" baseAuthorityName="Reed" baseAuthorityYear="1917" box="[352,676,1587,1611]" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="22" pageNumber="323" phylum="Arthropoda" rank="species" species="yunnanensis">
|
||
<emphasis id="B916EA806E431D1EFECDC275484DF307" box="[352,598,1588,1611]" italics="true" pageId="22" pageNumber="323">Birmanites yunnanensis</emphasis>
|
||
(Reed)
|
||
</taxonomicName>
|
||
from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 1. Librigena (original of
|
||
<bibRefCitation id="EFF34B636E431D1EFD28C21648EFF323" author="Reed, F. R. C." box="[645,756,1623,1647]" pageId="22" pageNumber="323" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed 1917</bibRefCitation>
|
||
, pl. 7, fig. 3), GSI 11892. 2. Pygidium (original of
|
||
<bibRefCitation id="EFF34B636E431D1EFB5CC2164F7BF323" author="Reed, F. R. C." box="[1265,1376,1623,1647]" pageId="22" pageNumber="323" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed 1917</bibRefCitation>
|
||
, pl. 7, fig. 6), GSI 11895. 3. Pygidium (original of
|
||
<bibRefCitation id="EFF34B636E431D1EFDFBC23A48DEF3DF" author="Reed, F. R. C." box="[598,709,1659,1683]" pageId="22" pageNumber="323" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed 1917</bibRefCitation>
|
||
, pl. 7, fig. 8), GSI 11897. 4. Librigena (original of
|
||
<bibRefCitation id="EFF34B636E431D1EFB6AC23A4F2DF3DF" author="Reed, F. R. C." box="[1223,1334,1659,1683]" pageId="22" pageNumber="323" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed 1917</bibRefCitation>
|
||
, pl. 7, fig. 5), GSI 11894. 5. Articulated specimen (original of
|
||
<bibRefCitation id="EFF34B636E431D1EFD08C2DE490EF3FB" author="Reed, F. R. C." box="[677,789,1695,1719]" pageId="22" pageNumber="323" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed 1917</bibRefCitation>
|
||
, pl. 6, fig. 12), GSI 11887. 6. Cephalon (original of
|
||
<bibRefCitation id="EFF34B636E431D1EFA85C2DE4F83F3FB" author="Reed, F. R. C." box="[1320,1432,1695,1719]" pageId="22" pageNumber="323" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed 1917</bibRefCitation>
|
||
, pl. 6, fig. 14), GSI 11889. (7, 10) Remopleuriidae gen. et sp. indet. (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 7. Cranidium, (original of
|
||
<bibRefCitation id="EFF34B636E431D1EFC29C2A649EDF3B3" author="Reed, F. R. C." box="[900,1014,1767,1791]" pageId="22" pageNumber="323" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed 1917</bibRefCitation>
|
||
, pl. 6, fig. 9), GSI 11884. 10. Librigena (original of
|
||
<bibRefCitation id="EFF34B636E431D1EFEBCC34A4B9BF26F" author="Reed, F. R. C." box="[273,384,1803,1827]" pageId="22" pageNumber="323" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed 1917</bibRefCitation>
|
||
, pl. 6, fig. 10), GSI 11885. (8)
|
||
<taxonomicName id="4C624D116E431D1EFD16C34A4947F26F" authorityName="Kobayashi" authorityYear="1934" box="[699,860,1803,1827]" class="Trilobita" family="Asaphidae" genus="Dolerobasilicus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Asaphida" pageId="22" pageNumber="323" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B916EA806E431D1EFD16C34A4947F26F" box="[699,860,1803,1827]" italics="true" pageId="22" pageNumber="323">Dolerobasilicus</emphasis>
|
||
</taxonomicName>
|
||
? sp. (Reed), Pygidium (original of
|
||
<bibRefCitation id="EFF34B636E431D1EFB6BC34A4F2EF26F" author="Reed, F. R. C." box="[1222,1333,1803,1827]" pageId="22" pageNumber="323" pagination="1 - 98" refId="ref46807" refString="Reed, F. R. C. (1915) Supplementary Memoir on new Ordovician and Silurian fossils from the Northern Shan States. Palaeontologia Indica, New Series 6, 1 - 98." type="book chapter" year="1915">Reed 1915</bibRefCitation>
|
||
, pl. 7, fig. 3), GSI 11535, Lower Naungkangyi Beds, Nawa, northern Shan State, Myanmar. (9)
|
||
<taxonomicName id="4C624D116E431D1EFBADC36E4E7CF20A" box="[1024,1127,1839,1863]" class="Trilobita" family="Nileidae" genus="Nileus" kingdom="Animalia" order="Asaphida" pageId="22" pageNumber="323" phylum="Arthropoda" rank="species" species="undetermined">
|
||
<emphasis id="B916EA806E431D1EFBADC36E4E5AF20B" box="[1024,1089,1839,1863]" italics="true" pageId="22" pageNumber="323">Nileus</emphasis>
|
||
sp.
|
||
</taxonomicName>
|
||
, Hypostome (original of
|
||
<bibRefCitation id="EFF34B636E431D1EFAC5C36E4AD7F227" author="Reed, F. R. C." pageId="22" pageNumber="323" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed 1917</bibRefCitation>
|
||
, pl. 8, fig. 5), GSI 11904, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (11, 12)
|
||
<taxonomicName id="4C624D116E431D1EFF3AC3364B5DF2C3" box="[151,326,1911,1935]" family="Asaphidae" genus="Niobe" kingdom="Animalia" order="Asaphida" pageId="22" pageNumber="323" phylum="Platyhelminthes" rank="species" species="undetermined">
|
||
<emphasis id="B916EA806E431D1EFF3AC3364ACFF2C3" box="[151,212,1911,1935]" italics="true" pageId="22" pageNumber="323">Niobe</emphasis>
|
||
sp. (Reed)
|
||
</taxonomicName>
|
||
. 11a, b. Pygidium (original of
|
||
<bibRefCitation id="EFF34B636E431D1EFD2DC33648EBF2C3" author="Reed, F. R. C." box="[640,752,1911,1935]" pageId="22" pageNumber="323" pagination="1 - 98" refId="ref46807" refString="Reed, F. R. C. (1915) Supplementary Memoir on new Ordovician and Silurian fossils from the Northern Shan States. Palaeontologia Indica, New Series 6, 1 - 98." type="book chapter" year="1915">Reed 1915</bibRefCitation>
|
||
, pl. 5, fig. 14), GSI 11516, Hwe Mawng Beds (uppermost Katian), Nati, northern part of Shan State, Myanmar, original and retrodeformation. 12. Pygidium (original of
|
||
<bibRefCitation id="EFF34B636E431D1EFB37C3DA4F12F2FF" author="Reed, F. R. C." box="[1178,1289,1947,1971]" pageId="22" pageNumber="323" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed 1917</bibRefCitation>
|
||
, pl. 6, fig. 11), GSI 11886, Shihtien Formation (Darriwilian), Shidian, Baoshan Prefecture, western Yunnan, China. Scale bars = 5 mm for 1–6, 8, 9; = 2 mm for 7, 10–12)
|
||
</paragraph>
|
||
</caption>
|
||
<subSubSection id="C37865196E421D1FFF6AC4D74AC6F179" pageId="23" pageNumber="324" type="discussion">
|
||
<paragraph id="8BDD36926E421D1FFF6AC4D74AC6F179" blockId="23.[151,1437,150,1077]" pageId="23" pageNumber="324">
|
||
<emphasis id="B916EA806E421D1FFF6AC4D74B57F5FC" bold="true" box="[199,332,150,176]" pageId="23" pageNumber="324">Discussion.</emphasis>
|
||
The individual selected here as the
|
||
<typeStatus id="54D988306E421D1FFD5DC4D6494CF5FD" box="[752,855,151,177]" pageId="23" pageNumber="324" type="lectotype">lectotype</typeStatus>
|
||
has a part and counterpart with two different GSI designations (11887 and 11893, respectively). GSI 11887 is a more complete specimen containing almost all of the thorax and all of the pygidium. GSI 11893 is only a small portion of thorax and the free cheek. Identical deformation signatures leave little doubt that these are the same individual though
|
||
<bibRefCitation id="EFF34B636E421D1FFC0AC5424E28F451" author="Reed, F. R. C." box="[935,1075,259,285]" pageId="23" pageNumber="324" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed (1917)</bibRefCitation>
|
||
did not recognize them as such. Although quite well preserved, the type material does not include a cranidium. However,
|
||
<bibRefCitation id="EFF34B636E421D1FFB39C5664F72F40D" author="Zhang, Y. - D. & Wang, Y. & Zhan, R. - B. & Fan, J. - X. & Zhou, Z. & Fang, X." box="[1172,1385,295,321]" pageId="23" pageNumber="324" refId="ref49148" refString="Zhang, Y. - D., Wang, Y., Zhan, R. - B., Fan, J. - X., Zhou, Z. - Q & Fang, X. (2014) Ordovician and Silurian Stratigraphy and Palaeontology of Yunnan, Southwest China. A guide to the field excursion across the South China, Indochina and Sibumasu. IGCP Project 591. Science Press, Beijing, 138 pp." type="book" year="2014">
|
||
Zhang
|
||
<emphasis id="B916EA806E421D1FFB49C5664F0DF40D" box="[1252,1302,295,321]" italics="true" pageId="23" pageNumber="324">et al</emphasis>
|
||
. (2014
|
||
</bibRefCitation>
|
||
, fig. 5.41F) illustrated a cranidium from western
|
||
<collectingRegion id="49A6F8706E421D1FFD2EC50A48C2F429" box="[643,729,331,357]" country="China" name="Yunnan" pageId="23" pageNumber="324">Yunnan</collectingRegion>
|
||
associated with a pygidium (fig. 7.41G) identical to those of
|
||
<taxonomicName id="4C624D116E421D1FFA29C50A4B3AF4C4" baseAuthorityName="Reed" baseAuthorityYear="1917" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="23" pageNumber="324" phylum="Arthropoda" rank="species" species="yunnanensis">
|
||
<emphasis id="B916EA806E421D1FFA29C50A4B3AF4C4" italics="true" pageId="23" pageNumber="324">B. yunnanensis</emphasis>
|
||
</taxonomicName>
|
||
from the type collection that confirms an assignment to
|
||
<taxonomicName id="4C624D116E421D1FFC3BC52E4E0AF4C4" authorityName="Sheng" authorityYear="1934" box="[918,1041,367,392]" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="23" pageNumber="324" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B916EA806E421D1FFC3BC52E4E0AF4C4" box="[918,1041,367,392]" italics="true" pageId="23" pageNumber="324">Birmanites</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
<bibRefCitation id="EFF34B636E421D1FFBB2C52E4EFCF4C5" author="Kobayashi, T." box="[1055,1255,366,393]" pageId="23" pageNumber="324" pagination="1 - 87" refId="ref45054" refString="Kobayashi, T. (1951) On the Ordovician trilobites in central China. Journal of the Faculty of Science Imperial University of Tokyo, Section II, Geology, 8, 1 - 87." type="journal article" year="1951">Kobayashi (1951)</bibRefCitation>
|
||
had assigned
|
||
<taxonomicName id="4C624D116E421D1FFA29C52E4B3AF4E0" baseAuthorityName="Reed" baseAuthorityYear="1917" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="23" pageNumber="324" phylum="Arthropoda" rank="species" species="yunnanensis">
|
||
<emphasis id="B916EA806E421D1FFA29C52E4B3AF4E0" italics="true" pageId="23" pageNumber="324">B. yunnanensis</emphasis>
|
||
</taxonomicName>
|
||
to
|
||
<taxonomicName id="4C624D116E421D1FFEE5C5D24BA8F4E1" authorityName="Kobayashi" authorityYear="1934" box="[328,435,403,429]" class="Trilobita" family="Asaphidae" genus="Basiliella" kingdom="Animalia" order="Asaphida" pageId="23" pageNumber="324" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B916EA806E421D1FFEE5C5D24BA8F4E1" box="[328,435,403,429]" italics="true" pageId="23" pageNumber="324">Basiliella</emphasis>
|
||
</taxonomicName>
|
||
, a genus clarified by
|
||
<bibRefCitation id="EFF34B636E421D1FFD07C5D249BCF4E1" author="Zhou, Z. - Y. & Fortey, R. A." box="[682,935,403,429]" pageId="23" pageNumber="324" pagination="157 - 210" refId="ref49540" refString="Zhou, Z. - Y. & Fortey, R. A. (1986) Ordovician trilobites from North and North-east China. Palaeontographica, Abteilung A, 192, 157 - 210." type="journal article" year="1986">Zhou & Fortey (1986)</bibRefCitation>
|
||
and not close to
|
||
<emphasis id="B916EA806E421D1FFBC6C5D24EF6F4E0" box="[1131,1261,403,428]" italics="true" pageId="23" pageNumber="324">
|
||
<taxonomicName id="4C624D116E421D1FFBC6C5D24EF2F4E0" authorityName="Sheng" authorityYear="1934" box="[1131,1257,403,428]" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="23" pageNumber="324" phylum="Arthropoda" rank="genus">Birmanites</taxonomicName>
|
||
,
|
||
</emphasis>
|
||
and more typical of lower palaeolatitude limestone facies of North
|
||
<collectingCountry id="F37576026E421D1FFD47C5F6492AF49D" box="[746,817,439,465]" name="China" pageId="23" pageNumber="324">China</collectingCountry>
|
||
. The smaller free cheeks of
|
||
<taxonomicName id="4C624D116E421D1FFBC7C5F64F08F49C" baseAuthorityName="Reed" baseAuthorityYear="1917" box="[1130,1299,439,464]" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="23" pageNumber="324" phylum="Arthropoda" rank="species" species="yunnanensis">
|
||
<emphasis id="B916EA806E421D1FFBC7C5F64F08F49C" box="[1130,1299,439,464]" italics="true" pageId="23" pageNumber="324">B. yunnanensis</emphasis>
|
||
</taxonomicName>
|
||
have lateral borders which are better defined than on most illustrated species of
|
||
<taxonomicName id="4C624D116E421D1FFC0FC59A4E06F4B8" authorityName="Sheng" authorityYear="1934" box="[930,1053,475,500]" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="23" pageNumber="324" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B916EA806E421D1FFC0FC59A4E06F4B8" box="[930,1053,475,500]" italics="true" pageId="23" pageNumber="324">Birmanites</emphasis>
|
||
</taxonomicName>
|
||
, but this is likely to be an earlier ontogenetic feature, since small birmantines can have well-defined genal borders (e.g.
|
||
<taxonomicName id="4C624D116E421D1FFBF1C5BE4B7DF771" authority="Zhou, Yin & Tripp, 1984" authorityName="Zhou, Yin & Tripp" authorityYear="1984" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="23" pageNumber="324" phylum="Arthropoda" rank="species" species="hupeiensis">
|
||
<emphasis id="B916EA806E421D1FFBF1C5BE4F48F755" box="[1116,1363,511,537]" italics="true" pageId="23" pageNumber="324">Birmanites hupeiensis</emphasis>
|
||
<bibRefCitation id="EFF34B636E421D1FFAF7C5BE4B7DF771" author="Zhou, Z. - Y. & Yin, G. - Z. & Tripp, R. P." pageId="23" pageNumber="324" pagination="13 - 36" refId="ref49576" refString="Zhou, Z. - Y., Yin, G. - Z. & Tripp, R. P. (1984) Trilobites from the Ordovician Shihtzupu Formation, Zunyi, Guizhou Province, China. Transactions of the Royal Society Edinburgh: Earth Sciences, 75, 13 - 36. https: // doi. org / 10.1017 / S 0263593300009755." type="journal article" year="1984">Zhou, Yin & Tripp, 1984</bibRefCitation>
|
||
</taxonomicName>
|
||
, fig. 3e;
|
||
<taxonomicName id="4C624D116E421D1FFE69C662499BF771" authority="Kielan, 1960" authorityName="Kielan" authorityYear="1960" box="[452,896,547,573]" class="Trilobita" family="Asaphidae" genus="Opsimasaphus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Asaphida" pageId="23" pageNumber="324" phylum="Arthropoda" rank="species" species="jaanussoni">
|
||
<emphasis id="B916EA806E421D1FFE69C66248F3F770" box="[452,744,547,573]" italics="true" pageId="23" pageNumber="324">Opsimasaphus jaanussoni</emphasis>
|
||
<bibRefCitation id="EFF34B636E421D1FFD43C662499BF771" author="Kielan, Z." box="[750,896,547,573]" pageId="23" pageNumber="324" pagination="1 - 191" refId="ref44947" refString="Kielan, Z. (1960) Upper Ordovician trilobites from Poland and some related forms from Bohemia and Scandinavia. Acta Palaeontologica Polonica, 11, 1 - 191." type="journal article" year="1960">Kielan, 1960</bibRefCitation>
|
||
</taxonomicName>
|
||
, pl. 7, fig. 2).
|
||
<bibRefCitation id="EFF34B636E421D1FFBB5C6624E87F771" author="Reed, F. R. C." box="[1048,1180,547,573]" pageId="23" pageNumber="324" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed (1917</bibRefCitation>
|
||
, pl. 7, fig. 3) illustrated a larger free cheek with the doublure extending to the eye lobe and carrying widely spaced terrace ridges, typically birmanitine. The cast from this specimen (
|
||
<figureCitation id="13592A176E421D1FFDD4C62A48C8F7C9" box="[633,723,619,645]" captionStart="FIGURE 8" captionStartId="22.[151,250,1587,1611]" captionTargetBox="[273,1314,181,1563]" captionTargetId="figure-29@22.[273,1314,181,1563]" captionTargetPageId="22" captionText="FIGURE 8. (1–6) Birmanites yunnanensis (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 1. Librigena (original of Reed 1917, pl. 7, fig. 3), GSI 11892. 2. Pygidium (original of Reed 1917, pl. 7, fig. 6), GSI 11895. 3. Pygidium (original of Reed 1917, pl. 7, fig. 8), GSI 11897. 4. Librigena (original of Reed 1917, pl. 7, fig. 5), GSI 11894. 5. Articulated specimen (original of Reed 1917, pl. 6, fig. 12), GSI 11887. 6. Cephalon (original of Reed 1917, pl. 6, fig. 14), GSI 11889. (7, 10) Remopleuriidae gen. et sp. indet. (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 7. Cranidium, (original of Reed 1917, pl. 6, fig. 9), GSI 11884. 10. Librigena (original of Reed 1917, pl. 6, fig. 10), GSI 11885. (8) Dolerobasilicus? sp. (Reed), Pygidium (original of Reed 1915, pl. 7, fig. 3), GSI 11535, Lower Naungkangyi Beds, Nawa, northern Shan State, Myanmar. (9) Nileus sp., Hypostome (original of Reed 1917, pl. 8, fig. 5), GSI 11904, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (11, 12) Niobe sp. (Reed). 11a, b. Pygidium (original of Reed 1915, pl. 5, fig. 14), GSI 11516, Hwe Mawng Beds (uppermost Katian), Nati, northern part of Shan State, Myanmar, original and retrodeformation. 12. Pygidium (original of Reed 1917, pl. 6, fig. 11), GSI 11886, Shihtien Formation (Darriwilian), Shidian, Baoshan Prefecture, western Yunnan, China. Scale bars = 5 mm for 1–6, 8, 9; = 2 mm for 7, 10–12)" figureDoi="http://doi.org/10.5281/zenodo.6810312" httpUri="https://zenodo.org/record/6810312/files/figure.png" pageId="23" pageNumber="324">Fig. 8.4</figureCitation>
|
||
) has a feeble lateral border and shows much of the course and extent of the facial suture, which is compatible with the cranidium figured by
|
||
<bibRefCitation id="EFF34B636E421D1FFBA5C6CE4EFEF7E5" author="Zhang, Y. - D. & Wang, Y. & Zhan, R. - B. & Fan, J. - X. & Zhou, Z. & Fang, X." box="[1032,1253,655,681]" pageId="23" pageNumber="324" refId="ref49148" refString="Zhang, Y. - D., Wang, Y., Zhan, R. - B., Fan, J. - X., Zhou, Z. - Q & Fang, X. (2014) Ordovician and Silurian Stratigraphy and Palaeontology of Yunnan, Southwest China. A guide to the field excursion across the South China, Indochina and Sibumasu. IGCP Project 591. Science Press, Beijing, 138 pp." type="book" year="2014">
|
||
Zhang
|
||
<emphasis id="B916EA806E421D1FFBFAC6CE4E8BF7E5" box="[1111,1168,655,681]" italics="true" pageId="23" pageNumber="324">et al.</emphasis>
|
||
(2014)
|
||
</bibRefCitation>
|
||
. Similarly, wide doublure with terrace ridges is seen on the pygidium illustrated in
|
||
<bibRefCitation id="EFF34B636E421D1FFCD9C6F249E3F781" author="Reed, F. R. C." box="[884,1016,691,717]" pageId="23" pageNumber="324" pagination="1 - 69" refId="ref46843" refString="Reed, F. R. C. (1917) Ordovician and Silurian fossils from Yun-nan. Palaeontologia Indica, 6 (3), 1 - 69." type="journal article" year="1917">Reed (1917</bibRefCitation>
|
||
, pl. 7, fig. 6) but the impression of the ridges is less clear on the cast from the counterpart of that specimen used here (
|
||
<figureCitation id="13592A176E421D1FFBB3C6964E60F7BD" box="[1054,1147,727,753]" captionStart="FIGURE 8" captionStartId="22.[151,250,1587,1611]" captionTargetBox="[273,1314,181,1563]" captionTargetId="figure-29@22.[273,1314,181,1563]" captionTargetPageId="22" captionText="FIGURE 8. (1–6) Birmanites yunnanensis (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 1. Librigena (original of Reed 1917, pl. 7, fig. 3), GSI 11892. 2. Pygidium (original of Reed 1917, pl. 7, fig. 6), GSI 11895. 3. Pygidium (original of Reed 1917, pl. 7, fig. 8), GSI 11897. 4. Librigena (original of Reed 1917, pl. 7, fig. 5), GSI 11894. 5. Articulated specimen (original of Reed 1917, pl. 6, fig. 12), GSI 11887. 6. Cephalon (original of Reed 1917, pl. 6, fig. 14), GSI 11889. (7, 10) Remopleuriidae gen. et sp. indet. (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 7. Cranidium, (original of Reed 1917, pl. 6, fig. 9), GSI 11884. 10. Librigena (original of Reed 1917, pl. 6, fig. 10), GSI 11885. (8) Dolerobasilicus? sp. (Reed), Pygidium (original of Reed 1915, pl. 7, fig. 3), GSI 11535, Lower Naungkangyi Beds, Nawa, northern Shan State, Myanmar. (9) Nileus sp., Hypostome (original of Reed 1917, pl. 8, fig. 5), GSI 11904, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (11, 12) Niobe sp. (Reed). 11a, b. Pygidium (original of Reed 1915, pl. 5, fig. 14), GSI 11516, Hwe Mawng Beds (uppermost Katian), Nati, northern part of Shan State, Myanmar, original and retrodeformation. 12. Pygidium (original of Reed 1917, pl. 6, fig. 11), GSI 11886, Shihtien Formation (Darriwilian), Shidian, Baoshan Prefecture, western Yunnan, China. Scale bars = 5 mm for 1–6, 8, 9; = 2 mm for 7, 10–12)" figureDoi="http://doi.org/10.5281/zenodo.6810312" httpUri="https://zenodo.org/record/6810312/files/figure.png" pageId="23" pageNumber="324">Fig. 8.2</figureCitation>
|
||
).
|
||
<taxonomicName id="4C624D116E421D1FFB22C6964F87F7BC" baseAuthorityName="Reed" baseAuthorityYear="1917" box="[1167,1436,727,752]" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="23" pageNumber="324" phylum="Arthropoda" rank="species" species="yunnanensis">
|
||
<emphasis id="B916EA806E421D1FFB22C6964F87F7BC" box="[1167,1436,727,752]" italics="true" pageId="23" pageNumber="324">Birmanites yunnanensis</emphasis>
|
||
</taxonomicName>
|
||
differs from the type species and many others in having relatively straight (not distally backwardly curved) pygidial pleural furrows, while the axis is about 70% total pygidial length. Generally similar pygidia are displayed by the Sandbian-Katian
|
||
<taxonomicName id="4C624D116E421D1FFEF7C702488BF611" authority="Zhang, 1981" authorityName="Zhang" authorityYear="1981" box="[346,656,835,861]" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="23" pageNumber="324" phylum="Arthropoda" rank="species" species="qilangensis">
|
||
<emphasis id="B916EA806E421D1FFEF7C7024BE1F611" box="[346,506,835,861]" italics="true" pageId="23" pageNumber="324">B. qilangensis</emphasis>
|
||
<bibRefCitation id="EFF34B636E421D1FFDADC702488BF611" author="Zhang, T. - R." box="[512,656,835,861]" pageId="23" pageNumber="324" pagination="134 - 213" refId="ref49024" refString="Zhang, T. - R. (1981) Trilobita. In: Geological Surveying Team of Xinjiang Bureau of Geology (Ed.), Palaeontological Atlas of Northwestern China, Xinjiang volume (Late Proterozoic - Early Palaeozoic). Geological Publishing House, Beijing, pp. 134 - 213. [in Chinese]" type="book chapter" year="1981">Zhang, 1981</bibRefCitation>
|
||
</taxonomicName>
|
||
, from
|
||
<collectingRegion id="49A6F8706E421D1FFD77C7024927F611" box="[730,828,835,861]" country="China" name="Xinjiang Uygur" pageId="23" pageNumber="324">Xinjiang</collectingRegion>
|
||
(Tarim) (see
|
||
<bibRefCitation id="EFF34B636E421D1FFC7EC7024E8CF611" author="Zhou, Z. - Y. & Yin, G. - Z. & Zhou, Z. - Q." box="[979,1175,835,861]" pageId="23" pageNumber="324" pagination="1 - 142" refId="ref49643" refString="Zhou, Z. - Y., Yin, G. - Z. & Zhou, Z. - Q. (2014) Ordovician Darriwilian - early Katian trilobite faunas of northwestern Tarim, Xinjiang, China. Memoirs of the Association of Australasian Palaeontologists, 46, 1 - 142." type="journal article" year="2014">
|
||
Zhou
|
||
<emphasis id="B916EA806E421D1FFBBBC7024E4EF611" box="[1046,1109,835,861]" italics="true" pageId="23" pageNumber="324">et al.,</emphasis>
|
||
2014
|
||
</bibRefCitation>
|
||
, fig. 29 A-C) and by
|
||
<taxonomicName id="4C624D116E421D1FFA29C7024B68F6CD" authority="Yi 1957" authorityName="Yi" authorityYear="1957" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="23" pageNumber="324" phylum="Arthropoda" rank="species" species="hupeiensis">
|
||
<emphasis id="B916EA806E421D1FFA29C7024B16F6CD" italics="true" pageId="23" pageNumber="324">B. hupeiensis</emphasis>
|
||
<bibRefCitation id="EFF34B636E421D1FFEB8C7264B68F6CD" author="Yi, Y. - G." box="[277,371,870,897]" pageId="23" pageNumber="324" pagination="527 - 560" refId="ref48945" refString="Yi, Y. - G. (1957) The Caradocian fauna from Yangtse-Gorges. Acta Palaeontologica Sinica, 5, 527 - 560." type="journal article" year="1957">Yi 1957</bibRefCitation>
|
||
</taxonomicName>
|
||
, from the Darriwilian Shihtzupu Formation of
|
||
<collectingRegion id="49A6F8706E421D1FFC26C7264E40F6CD" box="[907,1115,871,897]" country="China" name="Guizhou" pageId="23" pageNumber="324">Guizhou Province</collectingRegion>
|
||
. The latter had been erroneously identified with
|
||
<taxonomicName id="4C624D116E421D1FFE21C7CA482CF6E8" baseAuthorityName="Reed" baseAuthorityYear="1917" box="[396,567,907,932]" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="23" pageNumber="324" phylum="Arthropoda" rank="species" species="yunnanensis">
|
||
<emphasis id="B916EA806E421D1FFE21C7CA482CF6E8" box="[396,567,907,932]" italics="true" pageId="23" pageNumber="324">B. yunnanensis</emphasis>
|
||
</taxonomicName>
|
||
by
|
||
<bibRefCitation id="EFF34B636E421D1FFDCBC7CA48FEF6E9" author="Sun, Y. - C." box="[614,741,907,933]" pageId="23" pageNumber="324" pagination="1 - 47" refId="ref47544" refString="Sun, Y. - C. (1931) Ordovician trilobites of central and southern China. Palaeontologia Sinica, Series B, 7, 1 - 47." type="journal article" year="1931">Sun (1931)</bibRefCitation>
|
||
and
|
||
<bibRefCitation id="EFF34B636E421D1FFCB2C7CA49F0F6E9" author="Kobayashi, T." box="[799,1003,906,933]" pageId="23" pageNumber="324" pagination="1 - 87" refId="ref45054" refString="Kobayashi, T. (1951) On the Ordovician trilobites in central China. Journal of the Faculty of Science Imperial University of Tokyo, Section II, Geology, 8, 1 - 87." type="journal article" year="1951">Kobayashi (1951)</bibRefCitation>
|
||
and placed in the genus
|
||
<taxonomicName id="4C624D116E421D1FFAA1C7CA4F6CF6E9" authorityName="Kobayashi" authorityYear="1934" box="[1292,1399,907,933]" class="Trilobita" family="Asaphidae" genus="Basiliella" kingdom="Animalia" order="Asaphida" pageId="23" pageNumber="324" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B916EA806E421D1FFAA1C7CA4F6CF6E9" box="[1292,1399,907,933]" italics="true" pageId="23" pageNumber="324">Basiliella</emphasis>
|
||
</taxonomicName>
|
||
by the latter (see
|
||
<bibRefCitation id="EFF34B636E421D1FFE98C7EE4BE2F685" author="Zhou, Z. - Y. & Yin, G. - Z. & Tripp, R. P." box="[309,505,943,969]" pageId="23" pageNumber="324" pagination="13 - 36" refId="ref49576" refString="Zhou, Z. - Y., Yin, G. - Z. & Tripp, R. P. (1984) Trilobites from the Ordovician Shihtzupu Formation, Zunyi, Guizhou Province, China. Transactions of the Royal Society Edinburgh: Earth Sciences, 75, 13 - 36. https: // doi. org / 10.1017 / S 0263593300009755." type="journal article" year="1984">
|
||
Zhou
|
||
<emphasis id="B916EA806E421D1FFED5C7EE4BACF685" box="[376,439,943,969]" italics="true" pageId="23" pageNumber="324">et al.,</emphasis>
|
||
1984
|
||
</bibRefCitation>
|
||
, p. 17). The free cheeks illustrated by
|
||
<bibRefCitation id="EFF34B636E421D1FFC0BC7EE4E77F685" author="Zhou, Z. - Y. & Yin, G. - Z. & Tripp, R. P." box="[934,1132,943,969]" pageId="23" pageNumber="324" pagination="13 - 36" refId="ref49576" refString="Zhou, Z. - Y., Yin, G. - Z. & Tripp, R. P. (1984) Trilobites from the Ordovician Shihtzupu Formation, Zunyi, Guizhou Province, China. Transactions of the Royal Society Edinburgh: Earth Sciences, 75, 13 - 36. https: // doi. org / 10.1017 / S 0263593300009755." type="journal article" year="1984">
|
||
Zhou
|
||
<emphasis id="B916EA806E421D1FFC45C7EE4E3AF685" box="[1000,1057,943,969]" italics="true" pageId="23" pageNumber="324">et al.</emphasis>
|
||
(1984
|
||
</bibRefCitation>
|
||
, fig. 3e) are very similar to Reed’s illustrated here in
|
||
<figureCitation id="13592A176E421D1FFE18C7924815F6A1" box="[437,526,979,1005]" captionStart="FIGURE 8" captionStartId="22.[151,250,1587,1611]" captionTargetBox="[273,1314,181,1563]" captionTargetId="figure-29@22.[273,1314,181,1563]" captionTargetPageId="22" captionText="FIGURE 8. (1–6) Birmanites yunnanensis (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 1. Librigena (original of Reed 1917, pl. 7, fig. 3), GSI 11892. 2. Pygidium (original of Reed 1917, pl. 7, fig. 6), GSI 11895. 3. Pygidium (original of Reed 1917, pl. 7, fig. 8), GSI 11897. 4. Librigena (original of Reed 1917, pl. 7, fig. 5), GSI 11894. 5. Articulated specimen (original of Reed 1917, pl. 6, fig. 12), GSI 11887. 6. Cephalon (original of Reed 1917, pl. 6, fig. 14), GSI 11889. (7, 10) Remopleuriidae gen. et sp. indet. (Reed) from the Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. 7. Cranidium, (original of Reed 1917, pl. 6, fig. 9), GSI 11884. 10. Librigena (original of Reed 1917, pl. 6, fig. 10), GSI 11885. (8) Dolerobasilicus? sp. (Reed), Pygidium (original of Reed 1915, pl. 7, fig. 3), GSI 11535, Lower Naungkangyi Beds, Nawa, northern Shan State, Myanmar. (9) Nileus sp., Hypostome (original of Reed 1917, pl. 8, fig. 5), GSI 11904, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (11, 12) Niobe sp. (Reed). 11a, b. Pygidium (original of Reed 1915, pl. 5, fig. 14), GSI 11516, Hwe Mawng Beds (uppermost Katian), Nati, northern part of Shan State, Myanmar, original and retrodeformation. 12. Pygidium (original of Reed 1917, pl. 6, fig. 11), GSI 11886, Shihtien Formation (Darriwilian), Shidian, Baoshan Prefecture, western Yunnan, China. Scale bars = 5 mm for 1–6, 8, 9; = 2 mm for 7, 10–12)" figureDoi="http://doi.org/10.5281/zenodo.6810312" httpUri="https://zenodo.org/record/6810312/files/figure.png" pageId="23" pageNumber="324">Fig. 8.6</figureCitation>
|
||
, with regard to development of the border. However, if the cranidium assigned to
|
||
<taxonomicName id="4C624D116E421D1FFF3AC7B64B24F15C" baseAuthorityName="Reed" baseAuthorityYear="1917" box="[151,319,1015,1040]" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="23" pageNumber="324" phylum="Arthropoda" rank="species" species="yunnanensis">
|
||
<emphasis id="B916EA806E421D1FFF3AC7B64B24F15C" box="[151,319,1015,1040]" italics="true" pageId="23" pageNumber="324">B. yunnanensis</emphasis>
|
||
</taxonomicName>
|
||
in
|
||
<bibRefCitation id="EFF34B636E421D1FFECFC7B6482CF15D" author="Zhang, Y. - D. & Wang, Y. & Zhan, R. - B. & Fan, J. - X. & Zhou, Z. & Fang, X." box="[354,567,1015,1041]" pageId="23" pageNumber="324" refId="ref49148" refString="Zhang, Y. - D., Wang, Y., Zhan, R. - B., Fan, J. - X., Zhou, Z. - Q & Fang, X. (2014) Ordovician and Silurian Stratigraphy and Palaeontology of Yunnan, Southwest China. A guide to the field excursion across the South China, Indochina and Sibumasu. IGCP Project 591. Science Press, Beijing, 138 pp." type="book" year="2014">
|
||
Zhang
|
||
<emphasis id="B916EA806E421D1FFE02C7B64BFCF15D" box="[431,487,1015,1041]" italics="true" pageId="23" pageNumber="324">et al.</emphasis>
|
||
(2014)
|
||
</bibRefCitation>
|
||
is correct, then the preglabellar area of
|
||
<taxonomicName id="4C624D116E421D1FFC40C7B64E99F15D" authorityName="Yi" authorityYear="1957" box="[1005,1154,1015,1041]" class="Trilobita" family="Asaphidae" genus="Birmanites" kingdom="Animalia" order="Asaphida" pageId="23" pageNumber="324" phylum="Arthropoda" rank="species" species="hupeiensis">
|
||
<emphasis id="B916EA806E421D1FFC40C7B64E99F15D" box="[1005,1154,1015,1041]" italics="true" pageId="23" pageNumber="324">B. hupeiensis</emphasis>
|
||
</taxonomicName>
|
||
is relatively much longer (sag.).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |