242 lines
35 KiB
XML
242 lines
35 KiB
XML
<document id="422926C3E9730D4C71986D844BF9DFDF" 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="03CB87846E481D15FF3AC4D64E80F3C3" 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="Dionide hybrida Reed 1915" docType="treatment" docVersion="6" lastPageNumber="330" 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="330" updateTime="1699356965331" updateUser="ExternalLinkService" zenodo-license-document="CLOSED">
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<mods:title id="B6E7C935C79D621BCD0F9CA11DCF9B51">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="15F399BD053290F8895E96D21B7E937A" type="personal">
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<mods:namePart id="7BEB503495ED467CE84083D75115D536">Fortey, Richard A.</mods:namePart>
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<mods:affiliation id="22D24A590F208C24DFB6E192CA7DFE22">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="E1DBA9F6CAA5804FC31A0932C76B0C4E">Wernette, Shelly J.</mods:namePart>
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<mods:affiliation id="EC3102DC3DF4B63DA4B936BE69CE3DD2">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="2D338781E993A865DE860BEE2F37D66E">Hughes, Nigel C.</mods:namePart>
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<mods:title id="7C917A125F84775229B24478C747B177">Zootaxa</mods:title>
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<mods:date id="203BC8107535D2E766E57FAC16BC38EE">2022</mods:date>
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<mods:number id="D52749C75061C1A5DAAD3D3E93C3E283">2022-07-08</mods:number>
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<mods:number id="B936754ED63932D31198FDBF16360610">5162</mods:number>
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<treatment id="03CB87846E481D15FF3AC4D64E80F3C3" ID-DOI="http://doi.org/10.5281/zenodo.6810336" ID-GBIF-Taxon="197214840" ID-Zenodo-Dep="6810336" LSID="urn:lsid:plazi:treatment:03CB87846E481D15FF3AC4D64E80F3C3" httpUri="http://treatment.plazi.org/id/03CB87846E481D15FF3AC4D64E80F3C3" lastPageNumber="330" pageId="29" pageNumber="330">
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<subSubSection id="C37865196E481D15FF3AC4D64BF7F5FD" box="[151,492,151,178]" pageId="29" pageNumber="330" type="nomenclature">
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<paragraph id="8BDD36926E481D15FF3AC4D64BF7F5FD" blockId="29.[151,492,151,213]" box="[151,492,151,178]" pageId="29" pageNumber="330">
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<heading id="D09581FE6E481D15FF3AC4D64BF7F5FD" bold="true" box="[151,492,151,178]" fontSize="11" level="1" pageId="29" pageNumber="330" reason="1">
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<taxonomicName id="4C624D116E481D15FF3AC4D64BF7F5FD" authority="Reed, 1915" authorityName="Reed" authorityYear="1915" box="[151,492,151,178]" class="Trilobita" family="Dionididae" genus="Dionide" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="species" species="hybrida">
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<emphasis id="B916EA806E481D15FF3AC4D64BF7F5FD" bold="true" box="[151,492,151,178]" pageId="29" pageNumber="330">
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<emphasis id="B916EA806E481D15FF3AC4D64B47F5FE" bold="true" box="[151,348,151,178]" italics="true" pageId="29" pageNumber="330">Dionide hybrida</emphasis>
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<bibRefCitation id="EFF34B636E481D15FECEC4D64BF7F5FD" author="Reed, F. R. C." box="[355,492,151,177]" pageId="29" pageNumber="330" 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>
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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="C37865196E481D15FF3AC4FA492DF47A" pageId="29" pageNumber="330" type="description">
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<paragraph id="8BDD36926E481D15FF3AC4FA4AE7F599" blockId="29.[151,492,151,213]" box="[151,252,187,213]" pageId="29" pageNumber="330">
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<figureCitation id="13592A176E481D15FF3AC4FA4AE7F599" box="[151,252,187,213]" captionStart="FIGURE 10" captionStartId="31.[151,250,1456,1480]" captionTargetBox="[287,1301,181,1432]" captionTargetId="figure-18@31.[287,1301,181,1432]" captionTargetPageId="31" captionText="FIGURE 10. (1, 2) Lonchodamas? sp. (Reed) from the Li-Lu Formation (Katian), Lilu, northern Shan State, Myanmar. 1a, b. Pygidium (original of Reed 1915, pl. 5, fig. 6), GSI 11508, original and retrodeformation. 2. Cranidium (refigured from Reed 1915, pl. 5, fig. 5), GSI 11507. (3, 6) Lonchodamas shanensis (Reed) from the Hwe Mawng Beds (uppermost Katian), northern Shan State, Myanmar. 3. Pygidium (original of Reed 1915, pl. 5, fig. 3), GSI 11505, Hwe-hok. 6. Cranidium (original of Reed 1915, pl. 5, fig. 2), GSI 11504, Mong Ha. (4) Dionide hybrida (Reed), Cephalon (original of Reed 1915, pl. 5, fig. 7), GSI 11509, Hwe Mawng Beds (uppermost Katian), Hwe-hok, northern Shan State, Myanmar. (5, 8) Ovalocephalus? sp. indet. (Reed) from the Li-Lu Formation (Katian), Mân-ngai, northern part of Shan State, Myanmar. 5. Cranidium (original of Reed 1915, pl. 8, fig. 17), GSI 11563. 8. Thorax (original of Reed 1915, pl. 8, fig. 21), GSI 11567. (7) Pliomerina martellii (Reed), Cranidium (original of Reed 1917, pl. 8, fig. 15), GSI 11915, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (9) Prionocheilus liluensis (Reed), Cranidium (original of Reed 1915, pl. 8 figs 6 and 7), GSI 11554, Li-Lu Formation (Katian), Lilu, northern Shan State, Myanmar. (10, 13) Ovalocephalus sp. (Reed) from the Li-Lu Formation (Katian), Lilu, northern Shan State, Myanmar. 10. Pygidium (original of Reed 1915, pl. 8, fig. 9), GSI 11556. 13. Cephalon; not previously figured; no GSI catalogue number. (11, 12) “Calymene” oldhami (Reed) from Lower Naungkangyi Beds (probable Darriwilian), Mâ Shio, northern Shan State, Myanmar. 11. Cephalon and thorax (original of Reed 1915, pl. 8, fig. 11), GSI 11558. 12. Cephalon and partial thorax (original of Reed 1915, pl. 8, fig. 10), GSI 11557. Scale bars = 2 mm for 1–3, 6, 8–13; = 5 mm for 4, 5; = 1 mm for 7." figureDoi="http://doi.org/10.5281/zenodo.6810316" httpUri="https://zenodo.org/record/6810316/files/figure.png" pageId="29" pageNumber="330">Fig. 10.4</figureCitation>
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</paragraph>
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<paragraph id="8BDD36926E481D15FF3AC4BE4900F45B" blockId="29.[151,822,255,310]" box="[151,795,255,280]" pageId="29" pageNumber="330">
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1915
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<taxonomicName id="4C624D116E481D15FF5AC5414B85F454" authority="Fortey & Wernette & Hughes, 2022" authorityName="Fortey & Wernette & Hughes" authorityYear="2022" box="[247,414,256,280]" class="Trilobita" family="Dionididae" genus="Dionide" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="species" species="hybrida" status="sp. nov.">
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<emphasis id="B916EA806E481D15FF5AC5414B85F454" box="[247,414,256,280]" italics="true" pageId="29" pageNumber="330">Dionide hybrida</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="A22557FB6E481D15FE09C5414BEDF45B" box="[420,502,256,279]" pageId="29" pageNumber="330" rank="species">sp. nov.</taxonomicNameLabel>
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; Reed, p. 26–27, pl. 5, fig. 7.
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</paragraph>
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<paragraph id="8BDD36926E481D15FF3AC55F492DF47A" blockId="29.[151,822,255,310]" box="[151,822,286,310]" pageId="29" pageNumber="330">
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1940
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<emphasis id="B916EA806E481D15FF5AC55E4BAEF47A" box="[247,437,286,310]" italics="true" pageId="29" pageNumber="330">Digrypus hybridus</emphasis>
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(Reed); Kobayashi, p. 207, text-fig 2.
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||
</paragraph>
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||
</subSubSection>
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||
<subSubSection id="C37865196E481D15FF3AC5254BD8F4EF" pageId="29" pageNumber="330" type="materials_examined">
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<paragraph id="8BDD36926E481D15FF3AC5254BD8F4EF" blockId="29.[151,1437,356,1679]" pageId="29" pageNumber="330">
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<emphasis id="B916EA806E481D15FF3AC5254B1DF432" bold="true" box="[151,262,356,382]" pageId="29" pageNumber="330">Material.</emphasis>
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<materialsCitation id="3B0A3CCF6E481D15FEA3C5254BD8F4EF" ID-GBIF-Occurrence="3861306302" accessionNumber="GSI 11509" collectionCode="GSI" country="Myanmar" county="Hwe-hok" location="Cranidium" municipality="Upper Katian" pageId="29" pageNumber="330" specimenCount="1" typeStatus="holotype">
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<typeStatus id="54D988306E481D15FEA3C5254B60F432" box="[270,379,356,382]" pageId="29" pageNumber="330" type="holotype">Holotype</typeStatus>
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:
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<location id="8EBD60496E481D15FE2BC5254BE5F432" LSID="urn:lsid:plazi:treatment:03CB87846E481D15FF3AC4D64E80F3C3:8EBD60496E481D15FE2BC5254BE5F432" box="[390,510,356,382]" country="Myanmar" county="Hwe-hok" municipality="Upper Katian" name="Cranidium" pageId="29" pageNumber="330">Cranidium</location>
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part and counterpart from
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<location id="8EBD60496E481D15FC82C5244E1AF432" LSID="urn:lsid:plazi:treatment:03CB87846E481D15FF3AC4D64E80F3C3:8EBD60496E481D15FC82C5244E1AF432" box="[815,1025,356,383]" country="Myanmar" county="Hwe-hok" municipality="Upper Katian" name="Hwe Mawng Beds" pageId="29" pageNumber="330">Hwe Mawng Beds</location>
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(
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<collectingMunicipality id="6BB9ACE86E481D15FBBDC5244EB7F432" box="[1040,1196,356,383]" pageId="29" pageNumber="330">Upper Katian</collectingMunicipality>
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) of
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<collectingCounty id="62BC4E1E6E481D15FB76C5254F5DF432" box="[1243,1350,356,382]" pageId="29" pageNumber="330">Hwe-hok</collectingCounty>
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,
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<collectingCountry id="F37576026E481D15FAFFC5244ADFF4EF" name="Myanmar" pageId="29" pageNumber="330">Myanmar</collectingCountry>
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,
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<figureCitation id="13592A176E481D15FF7DC5C94B2CF4EF" box="[208,311,392,419]" captionStart="FIGURE 10" captionStartId="31.[151,250,1456,1480]" captionTargetBox="[287,1301,181,1432]" captionTargetId="figure-18@31.[287,1301,181,1432]" captionTargetPageId="31" captionText="FIGURE 10. (1, 2) Lonchodamas? sp. (Reed) from the Li-Lu Formation (Katian), Lilu, northern Shan State, Myanmar. 1a, b. Pygidium (original of Reed 1915, pl. 5, fig. 6), GSI 11508, original and retrodeformation. 2. Cranidium (refigured from Reed 1915, pl. 5, fig. 5), GSI 11507. (3, 6) Lonchodamas shanensis (Reed) from the Hwe Mawng Beds (uppermost Katian), northern Shan State, Myanmar. 3. Pygidium (original of Reed 1915, pl. 5, fig. 3), GSI 11505, Hwe-hok. 6. Cranidium (original of Reed 1915, pl. 5, fig. 2), GSI 11504, Mong Ha. (4) Dionide hybrida (Reed), Cephalon (original of Reed 1915, pl. 5, fig. 7), GSI 11509, Hwe Mawng Beds (uppermost Katian), Hwe-hok, northern Shan State, Myanmar. (5, 8) Ovalocephalus? sp. indet. (Reed) from the Li-Lu Formation (Katian), Mân-ngai, northern part of Shan State, Myanmar. 5. Cranidium (original of Reed 1915, pl. 8, fig. 17), GSI 11563. 8. Thorax (original of Reed 1915, pl. 8, fig. 21), GSI 11567. (7) Pliomerina martellii (Reed), Cranidium (original of Reed 1917, pl. 8, fig. 15), GSI 11915, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (9) Prionocheilus liluensis (Reed), Cranidium (original of Reed 1915, pl. 8 figs 6 and 7), GSI 11554, Li-Lu Formation (Katian), Lilu, northern Shan State, Myanmar. (10, 13) Ovalocephalus sp. (Reed) from the Li-Lu Formation (Katian), Lilu, northern Shan State, Myanmar. 10. Pygidium (original of Reed 1915, pl. 8, fig. 9), GSI 11556. 13. Cephalon; not previously figured; no GSI catalogue number. (11, 12) “Calymene” oldhami (Reed) from Lower Naungkangyi Beds (probable Darriwilian), Mâ Shio, northern Shan State, Myanmar. 11. Cephalon and thorax (original of Reed 1915, pl. 8, fig. 11), GSI 11558. 12. Cephalon and partial thorax (original of Reed 1915, pl. 8, fig. 10), GSI 11557. Scale bars = 2 mm for 1–3, 6, 8–13; = 5 mm for 4, 5; = 1 mm for 7." figureDoi="http://doi.org/10.5281/zenodo.6810316" httpUri="https://zenodo.org/record/6810316/files/figure.png" pageId="29" pageNumber="330">Fig. 10.4</figureCitation>
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,
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<collectionCode id="ED73AE576E481D15FEEFC5C84B74F4EF" box="[322,367,393,419]" country="India" httpUri="http://grbio.org/cool/jprb-qxkv" name="Geological Survey of India" pageId="29" pageNumber="330">GSI</collectionCode>
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11509.
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</materialsCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="C37865196E481D15FF6AC5ED4961F13F" pageId="29" pageNumber="330" type="description">
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<paragraph id="8BDD36926E481D15FF6AC5ED4961F13F" blockId="29.[151,1437,356,1679]" pageId="29" pageNumber="330">
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<emphasis id="B916EA806E481D15FF6AC5ED4B42F48A" bold="true" box="[199,345,428,454]" pageId="29" pageNumber="330">Description.</emphasis>
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The species is founded upon a single, reasonably well-preserved cranidium. The illustration herein is of a cast from the counterpart of the
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<typeStatus id="54D988306E481D15FDC1C59148D5F4A6" box="[620,718,464,490]" pageId="29" pageNumber="330" type="holotype">holotype</typeStatus>
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figured by
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<bibRefCitation id="EFF34B636E481D15FCFFC59149CCF4A7" author="Reed, F. R. C." box="[850,983,464,491]" pageId="29" pageNumber="330" 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>
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, pl. 5, fig. 7), the convex (tr.) cranidium slightly more than twice as wide as long, with the preglabellar field occupying 15% of the cranidial length (sag.). Glabella in front of the occipital ring with almost circular dimensions, but with gently constricted sides, transversely evenly convex. The prominent glabella tubercle is at glabellar mid-length (occipital ring included). The basal lateral glabellar lobes are more or less incorporated into the glabella, but their extent is revealed as slight bulges in the axial furrows, which are not apparent on the original drawing in
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<bibRefCitation id="EFF34B636E481D15FCECC6C549C9F7D3" author="Reed, F. R. C." box="[833,978,644,671]" pageId="29" pageNumber="330" 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>
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. The posterior ends approach the lateral edges of the occipital ring. A small part of the otherwise effaced furrows defining their inner edges is deepened into a pair of small subcircular glabellar furrows. The depressed and narrow (sag.) occipital ring about two-thirds glabellar width, defined by an occipital furrow which is shallower and wider medially. Axial furrows narrow, shallowest around posterolateral glabellar lobes. Thin and deep posterior border furrow is probably incomplete as it extends to genal angle in
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<taxonomicName id="4C624D116E481D15FEF7C7794BAFF61E" authorityName="Barrande" authorityYear="1847" box="[346,436,824,850]" class="Trilobita" family="Dionididae" genus="Dionide" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="genus">
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<emphasis id="B916EA806E481D15FEF7C7794BAFF61E" box="[346,436,824,850]" italics="true" pageId="29" pageNumber="330">Dionide</emphasis>
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</taxonomicName>
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(this seems to be shown on the right hand side of the 1915 illustration). Posterior border hardly convex, slightly wider (exsag.) than occipital ring. Fixed cheeks convex adjacent to glabella and downsloping to fairly narrow concave border that maintains nearly even width around the anterior perimeter, such that at the midline the preglabellar area is very short (sag.), about one-sixth of length of glabella behind (sag.). Left hand side suggests a prolonged genal extension posteriorly. The dorsal surface of cheeks is pitted, with the larger pits following the inner edge of the anterior border.
|
||
<bibRefCitation id="EFF34B636E481D15FDC7C7AD4913F14B" author="Reed, F. R. C." box="[618,776,1004,1031]" pageId="29" pageNumber="330" 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’s (1915)</bibRefCitation>
|
||
illustration emphasises this feature, but it is not so clearly marked on the cast, where more noticeable pits are concentrated in front of the glabella. Backwardly directed principal genal vein is not well developed, but a narrow ridge can be seen on the left-hand side of the cranidium
|
||
<figureCitation id="13592A176E481D15FA95C0754F83F103" box="[1336,1432,1076,1103]" captionStart="FIGURE 10" captionStartId="31.[151,250,1456,1480]" captionTargetBox="[287,1301,181,1432]" captionTargetId="figure-18@31.[287,1301,181,1432]" captionTargetPageId="31" captionText="FIGURE 10. (1, 2) Lonchodamas? sp. (Reed) from the Li-Lu Formation (Katian), Lilu, northern Shan State, Myanmar. 1a, b. Pygidium (original of Reed 1915, pl. 5, fig. 6), GSI 11508, original and retrodeformation. 2. Cranidium (refigured from Reed 1915, pl. 5, fig. 5), GSI 11507. (3, 6) Lonchodamas shanensis (Reed) from the Hwe Mawng Beds (uppermost Katian), northern Shan State, Myanmar. 3. Pygidium (original of Reed 1915, pl. 5, fig. 3), GSI 11505, Hwe-hok. 6. Cranidium (original of Reed 1915, pl. 5, fig. 2), GSI 11504, Mong Ha. (4) Dionide hybrida (Reed), Cephalon (original of Reed 1915, pl. 5, fig. 7), GSI 11509, Hwe Mawng Beds (uppermost Katian), Hwe-hok, northern Shan State, Myanmar. (5, 8) Ovalocephalus? sp. indet. (Reed) from the Li-Lu Formation (Katian), Mân-ngai, northern part of Shan State, Myanmar. 5. Cranidium (original of Reed 1915, pl. 8, fig. 17), GSI 11563. 8. Thorax (original of Reed 1915, pl. 8, fig. 21), GSI 11567. (7) Pliomerina martellii (Reed), Cranidium (original of Reed 1917, pl. 8, fig. 15), GSI 11915, Shihtien Formation (Darriwilian), Pupiao, Baoshan Prefecture, western Yunnan, China. (9) Prionocheilus liluensis (Reed), Cranidium (original of Reed 1915, pl. 8 figs 6 and 7), GSI 11554, Li-Lu Formation (Katian), Lilu, northern Shan State, Myanmar. (10, 13) Ovalocephalus sp. (Reed) from the Li-Lu Formation (Katian), Lilu, northern Shan State, Myanmar. 10. Pygidium (original of Reed 1915, pl. 8, fig. 9), GSI 11556. 13. Cephalon; not previously figured; no GSI catalogue number. (11, 12) “Calymene” oldhami (Reed) from Lower Naungkangyi Beds (probable Darriwilian), Mâ Shio, northern Shan State, Myanmar. 11. Cephalon and thorax (original of Reed 1915, pl. 8, fig. 11), GSI 11558. 12. Cephalon and partial thorax (original of Reed 1915, pl. 8, fig. 10), GSI 11557. Scale bars = 2 mm for 1–3, 6, 8–13; = 5 mm for 4, 5; = 1 mm for 7." figureDoi="http://doi.org/10.5281/zenodo.6810316" httpUri="https://zenodo.org/record/6810316/files/figure.png" pageId="29" pageNumber="330">Fig 10.4</figureCitation>
|
||
, which follows a course similar to that of other species of
|
||
<taxonomicName id="4C624D116E481D15FCB4C0194968F13E" authorityName="Barrande" authorityYear="1847" box="[793,883,1112,1138]" class="Trilobita" family="Dionididae" genus="Dionide" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B916EA806E481D15FCB4C0194968F13E" box="[793,883,1112,1138]" italics="true" pageId="29" pageNumber="330">Dionide</emphasis>
|
||
</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C37865196E481D15FF6AC03D4E80F3C3" pageId="29" pageNumber="330" type="discussion">
|
||
<paragraph id="8BDD36926E481D15FF6AC03D4E80F3C3" blockId="29.[151,1437,356,1679]" pageId="29" pageNumber="330">
|
||
<emphasis id="B916EA806E481D15FF6AC03D4B57F1DA" bold="true" box="[199,332,1148,1174]" pageId="29" pageNumber="330">Discussion.</emphasis>
|
||
Among numerous
|
||
<taxonomicName id="4C624D116E481D15FD8CC03D48C8F1DA" box="[545,723,1148,1174]" pageId="29" pageNumber="330">
|
||
<emphasis id="B916EA806E481D15FD8CC03D4860F1DA" box="[545,635,1148,1174]" italics="true" pageId="29" pageNumber="330">Dionide</emphasis>
|
||
species
|
||
</taxonomicName>
|
||
only a few have a preglabellar area well short of half the length of the glabella (sag.). One of them is the type species,
|
||
<taxonomicName id="4C624D116E481D15FCA1C0E04E4CF1F6" authority="(Barrande, 1846)" baseAuthorityName="Barrande" baseAuthorityYear="1846" box="[780,1111,1184,1211]" class="Trilobita" family="Dionididae" genus="Dione" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="species" species="formosa">
|
||
<emphasis id="B916EA806E481D15FCA1C0E04996F1F7" box="[780,909,1185,1211]" italics="true" pageId="29" pageNumber="330">D. formosa</emphasis>
|
||
(
|
||
<bibRefCitation id="EFF34B636E481D15FC30C0E14E55F1F6" author="Barrande, J." box="[925,1102,1184,1210]" pageId="29" pageNumber="330" refId="ref42585" refString="Barrande, J. (1846) Nouveaux trilobites. Notice preliminaire sur le systeme Silurien et les Trilobites de Boheme, Praha, 40 pp." type="book" year="1846">Barrande, 1846</bibRefCitation>
|
||
)
|
||
</taxonomicName>
|
||
the
|
||
<typeStatus id="54D988306E481D15FB26C0E14EE9F1F6" box="[1163,1266,1184,1210]" pageId="29" pageNumber="330" type="lectotype">lectotype</typeStatus>
|
||
of which is illustrated in
|
||
<bibRefCitation id="EFF34B636E481D15FEB3C0844809F193" author="Horny, R. & Bastl, F." box="[286,530,1220,1247]" pageId="29" pageNumber="330" refId="ref44590" refString="Horny, R. & Bastl, F. (1970) Type specimen of fossils in the National Museum, Prague. Trilobita. National Museum, Prague, Prague, 354 pp." type="book" year="1970">Horný & Bastl (1970</bibRefCitation>
|
||
, pl. 13, fig. 3, see also
|
||
<bibRefCitation id="EFF34B636E481D15FCB0C08749ABF193" author="Snajdr, M." box="[797,944,1221,1249]" pageId="29" pageNumber="330" refId="ref47336" refString="Snajdr, M. (1990) Bohemian trilobites. Geological Survey, Prague. 265 pp." type="book" year="1990">Šnajdr, 1990</bibRefCitation>
|
||
, p. 193). The main differences between the cranidium of
|
||
<taxonomicName id="4C624D116E481D15FE9DC0A84BB1F04E" authorityName="Fortey & Wernette & Hughes" authorityYear="2022" box="[304,426,1256,1282]" class="Trilobita" family="Dionididae" genus="Dionide" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="species" species="hybrida">
|
||
<emphasis id="B916EA806E481D15FE9DC0A84BB1F04E" box="[304,426,1256,1282]" italics="true" pageId="29" pageNumber="330">D. hybrida</emphasis>
|
||
</taxonomicName>
|
||
and that of
|
||
<taxonomicName id="4C624D116E481D15FD99C0A848A8F04F" baseAuthorityName="Barrande" baseAuthorityYear="1846" box="[564,691,1257,1283]" class="Trilobita" family="Dionididae" genus="Dione" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="species" species="formosa">
|
||
<emphasis id="B916EA806E481D15FD99C0A848A8F04F" box="[564,691,1257,1283]" italics="true" pageId="29" pageNumber="330">D. formosa</emphasis>
|
||
</taxonomicName>
|
||
are the wider fixed cheeks of the former and its more rectangular glabella, as well as more prominent surface sculpture of the latter.
|
||
<taxonomicName id="4C624D116E481D15FC3BC14D4EEDF06B" authority="Lu, 1975" authorityName="Lu" authorityYear="1975" box="[918,1270,1292,1319]" class="Trilobita" family="Dionididae" genus="Dionide" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="species" species="miaopoensis">
|
||
<emphasis id="B916EA806E481D15FC3BC14D4E9EF06A" box="[918,1157,1292,1318]" italics="true" pageId="29" pageNumber="330">Dionide miaopoensis</emphasis>
|
||
<bibRefCitation id="EFF34B636E481D15FB23C14C4EEDF06B" author="Lu, Y. - H." box="[1166,1270,1292,1319]" pageId="29" pageNumber="330" pagination="1 - 453" refId="ref45640" refString="Lu, Y. - H. (1975) Ordovician trilobite faunas of central and southwestern China. Palaeontologia Sinica, New Series B, 11, 1 - 453." type="journal article" year="1975">Lu, 1975</bibRefCitation>
|
||
</taxonomicName>
|
||
) (also
|
||
<bibRefCitation id="EFF34B636E481D15FAEAC14C4AE0F007" author="Peng, S. - C. & Lin, T. - R. & Li, Y." pageId="29" pageNumber="330" pagination="1 - 19" refId="ref46340" refString="Peng, S. - C., Lin, T. - R. & Li, Y. (1991) Restudy of the trilobites (agnostoids and other polymerids) from the Miaopo Formation in Eastern Yangtze Gorges and western Hubei. Acta Palaeontologica Sinica, 30, 1 - 19." type="journal article" year="1991">
|
||
Peng
|
||
<emphasis id="B916EA806E481D15FA25C14C4AAFF006" italics="true" pageId="29" pageNumber="330">et al.</emphasis>
|
||
, 1991
|
||
</bibRefCitation>
|
||
) from the Upper Ordovician Maiopo Formation of Hubei Province also has a narrow preglabellar area but appears to resemble
|
||
<taxonomicName id="4C624D116E481D15FED0C1144BE7F023" baseAuthorityName="Barrande" baseAuthorityYear="1846" box="[381,508,1365,1391]" class="Trilobita" family="Dionididae" genus="Dione" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="species" species="formosa">
|
||
<emphasis id="B916EA806E481D15FED0C1144BE7F023" box="[381,508,1365,1391]" italics="true" pageId="29" pageNumber="330">D. formosa</emphasis>
|
||
</taxonomicName>
|
||
rather than
|
||
<taxonomicName id="4C624D116E481D15FD2FC11448E7F022" authorityName="Fortey & Wernette & Hughes" authorityYear="2022" box="[642,764,1364,1390]" class="Trilobita" family="Dionididae" genus="Dionide" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="species" species="hybrida">
|
||
<emphasis id="B916EA806E481D15FD2FC11448E7F022" box="[642,764,1364,1390]" italics="true" pageId="29" pageNumber="330">D. hybrida</emphasis>
|
||
</taxonomicName>
|
||
in the same differential features. A much older species with A cranidium like that of
|
||
<taxonomicName id="4C624D116E481D15FE1FC1384836F0DE" authorityName="Fortey & Wernette & Hughes" authorityYear="2022" box="[434,557,1400,1426]" class="Trilobita" family="Dionididae" genus="Dionide" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="species" species="hybrida">
|
||
<emphasis id="B916EA806E481D15FE1FC1384836F0DE" box="[434,557,1400,1426]" italics="true" pageId="29" pageNumber="330">D. hybrida</emphasis>
|
||
</taxonomicName>
|
||
is
|
||
<taxonomicName id="4C624D116E481D15FDFCC13849FEF0DF" authority="Fortey & Owens, 1987" authorityName="Fortey & Owens" authorityYear="1987" box="[593,997,1400,1427]" class="Trilobita" family="Dionididae" genus="Dionide" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="species" species="levigena">
|
||
<emphasis id="B916EA806E481D15FDFCC13848CFF0DE" box="[593,724,1400,1426]" italics="true" pageId="29" pageNumber="330">D. levigena</emphasis>
|
||
<bibRefCitation id="EFF34B636E481D15FD71C13849FEF0DF" author="Fortey, R. A. & Owens, R. M." box="[732,997,1401,1427]" pageId="29" pageNumber="330" pagination="69 - 307" refId="ref44058" refString="Fortey, R. A. & Owens, R. M. (1987) The Arenig series in South Wales. Bulletin of British Museum of Natural History, Geology, 41, 69 - 307." type="journal article" year="1987">Fortey & Owens, 1987</bibRefCitation>
|
||
</taxonomicName>
|
||
, from the “late Arenig-early Llanvirn” (Dapingian to early Darriwilian) of South Wales (also
|
||
<bibRefCitation id="EFF34B636E481D15FD50C1DD4E59F0FB" author="Kennedy, R. & Stammers, S." box="[765,1090,1436,1463]" pageId="29" pageNumber="330" refId="ref44920" refString="Kennedy, R. & Stammers, S. (2018) Trilobites of the British Isles. Siri Scientific Press, Manchester, 383 pp." type="book" year="2018">Kennedy & Stammers, 2018</bibRefCitation>
|
||
, fig. 235) which has an almost circular glabella, and at least one example with cheeks as narrow (tr.). A clear difference is the separate convexity of the cheek lobe on
|
||
<taxonomicName id="4C624D116E481D15FE2EC1A4481EF0B2" authorityName="Fortey & Owens" authorityYear="1987" box="[387,517,1508,1534]" class="Trilobita" family="Dionididae" genus="Dionide" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="species" species="levigena">
|
||
<emphasis id="B916EA806E481D15FE2EC1A4481EF0B2" box="[387,517,1508,1534]" italics="true" pageId="29" pageNumber="330">D. levigena</emphasis>
|
||
</taxonomicName>
|
||
, which merges gently with the border in
|
||
<emphasis id="B916EA806E481D15FC79C1A44E4EF0B2" box="[980,1109,1508,1534]" italics="true" pageId="29" pageNumber="330">
|
||
<taxonomicName id="4C624D116E481D15FC79C1A44E4AF0B2" authorityName="Fortey & Wernette & Hughes" authorityYear="2022" box="[980,1105,1508,1534]" class="Trilobita" family="Dionididae" genus="Dionide" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="species" species="hybrida">D. hybrida</taxonomicName>
|
||
.
|
||
</emphasis>
|
||
A Chinese species of similar age to
|
||
<taxonomicName id="4C624D116E481D15FF4FC2484B40F36E" authorityName="Fortey & Wernette & Hughes" authorityYear="2022" box="[226,347,1544,1571]" class="Trilobita" family="Dionididae" genus="Dionide" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="species" species="hybrida">
|
||
<emphasis id="B916EA806E481D15FF4FC2484AEDF36E" box="[226,246,1545,1570]" italics="true" pageId="29" pageNumber="330">D</emphasis>
|
||
.
|
||
<emphasis id="B916EA806E481D15FEA9C2494B40F36E" box="[260,347,1544,1570]" italics="true" pageId="29" pageNumber="330">hybrida</emphasis>
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C624D116E481D15FEC4C24848B9F36F" authority="Lu & Zhou, 1981" authorityName="Lu & Zhou" authorityYear="1981" box="[361,674,1544,1571]" class="Trilobita" family="Dionididae" genus="Dionide" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="species" species="regalis">
|
||
<emphasis id="B916EA806E481D15FEC4C2484BC3F36E" box="[361,472,1544,1570]" italics="true" pageId="29" pageNumber="330">D. regalis</emphasis>
|
||
<bibRefCitation id="EFF34B636E481D15FE73C24848B9F36F" author="Lu, Y. - H. & Zhou, Z. - Y." box="[478,674,1544,1571]" pageId="29" pageNumber="330" pagination="1 - 27" refId="ref45672" refString="Lu, Y. - H. & Zhou, Z. - Y. (1981) Early Upper Ordovician trilobites from the Nanjing Hills. Bulletin of the Nanjing Institute of Geology and Palaeontology, 3, 1 - 27. [in Chinese, English summary]" type="journal article" year="1981">Lu & Zhou, 1981</bibRefCitation>
|
||
</taxonomicName>
|
||
(see
|
||
<bibRefCitation id="EFF34B636E481D15FD71C24949BAF36F" author="Tripp, R. P. & Zhou, Z. - Y. & Pan, Z. - Q." box="[732,929,1544,1571]" pageId="29" pageNumber="330" pagination="25 - 68" refId="ref47815" refString="Tripp, R. P., Zhou, Z. - Y. & Pan, Z. - Q. (1989) Trilobites from the Upper Ordovician Tangtou Formation, Jiangsu Province, China. Transactions of the Royal Society of Edinburgh, Earth Sciences, 80, 25 - 68. https: // doi. org / 10.1017 / S 0263593300012256" type="journal article" year="1989">
|
||
Tripp
|
||
<emphasis id="B916EA806E481D15FC8CC2484949F36E" box="[801,850,1544,1570]" italics="true" pageId="29" pageNumber="330">et al</emphasis>
|
||
., 1989
|
||
</bibRefCitation>
|
||
, fig. 12) has a cranidium of which can hardly be distinguished from that of the
|
||
<collectingCountry id="F37576026E481D15FDBCC26C4865F30B" box="[529,638,1581,1607]" name="Myanmar" pageId="29" pageNumber="330">Myanmar</collectingCountry>
|
||
species; possibly, the gena is more convex and distinctly caecate.
|
||
<bibRefCitation id="EFF34B636E481D15FADCC26C4B25F327" author="Kobayashi, T." pageId="29" pageNumber="330" pagination="203 - 208" refId="ref45028" refString="Kobayashi, T. (1940). Note on the Dionideidae. Japanese Journal of Geology and Geography, 17, 203 - 208." type="journal article" year="1940">Kobayashi (1940)</bibRefCitation>
|
||
made
|
||
<taxonomicName id="4C624D116E481D15FE25C211485BF326" authorityName="Fortey & Wernette & Hughes" authorityYear="2022" box="[392,576,1616,1642]" class="Trilobita" family="Dionididae" genus="Dionide" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="species" species="hybrida">
|
||
<emphasis id="B916EA806E481D15FE25C211485BF326" box="[392,576,1616,1642]" italics="true" pageId="29" pageNumber="330">Dionide hybrida</emphasis>
|
||
</taxonomicName>
|
||
the type species of a new genus,
|
||
<emphasis id="B916EA806E481D15FC1EC2104E00F326" box="[947,1051,1617,1642]" italics="true" pageId="29" pageNumber="330">Digrypus</emphasis>
|
||
, but we consider that there are not sufficient distinctions from
|
||
<taxonomicName id="4C624D116E481D15FE60C2354891F3C3" baseAuthorityName="Barrande" baseAuthorityYear="1846" box="[461,650,1652,1679]" class="Trilobita" family="Dionididae" genus="Dionide" kingdom="Animalia" order="Asaphida" pageId="29" pageNumber="330" phylum="Arthropoda" rank="species" species="formosa">
|
||
<emphasis id="B916EA806E481D15FE60C2354891F3C3" box="[461,650,1652,1679]" italics="true" pageId="29" pageNumber="330">Dionide formosa</emphasis>
|
||
</taxonomicName>
|
||
and other
|
||
<taxonomicName id="4C624D116E481D15FCACC23549A8F3C2" box="[769,947,1652,1678]" pageId="29" pageNumber="330">
|
||
<emphasis id="B916EA806E481D15FCACC2354940F3C2" box="[769,859,1652,1678]" italics="true" pageId="29" pageNumber="330">Dionide</emphasis>
|
||
species
|
||
</taxonomicName>
|
||
to justify this taxon.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |