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<document id="E47B3E8BCA5492D94A33B37CE1EBE675" ID-DOI="10.11646/phytotaxa.629.3.4" ID-ISSN="1179-3163" ID-Zenodo-Dep="10281851" IM.bibliography_approvedBy="jonas" IM.illustrations_approvedBy="jonas" IM.materialsCitations_approvedBy="jonas" IM.metadata_approvedBy="felipe" IM.tables_approvedBy="jonas" IM.taxonomicNames_approvedBy="felipe" IM.treatments_approvedBy="jonas" checkinTime="1701946355086" checkinUser="plazi" docAuthor="He, Wenyu, Rioual, Patrick, Luo, Hai, Li, Jingjing &amp; Wang, Luo" docDate="2023" docId="7831878FFFED0B2CFCBCF169FC7DF7D2" docLanguage="en" docName="phytotaxa.629.3.4.pdf" docOrigin="Phytotaxa 629 (3)" docSource="https://phytotaxa.mapress.com/pt/article/download/phytotaxa.629.3.4/51344" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.11:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="11" docTitle="Aulacoseira huguang He, Rioual &amp; Wang 2023, sp.nov." docType="treatment" docVersion="3" lastPageNumber="226" masterDocId="8408FFF7FFEF0B2FFC34F55DFF76FFF1" masterDocTitle="Aulacoseira huguang sp. nov., a new Lateglacial fossil diatom from South China" masterLastPageNumber="234" masterPageNumber="223" pageNumber="225" updateTime="1702060215945" updateUser="jonas" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="C5DE91A7B31A4BAC9124EA597630E749">Aulacoseira huguang sp. nov., a new Lateglacial fossil diatom from South China</mods:title>
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<mods:namePart id="CCCE8D70D409182FB663927A31A46893">He, Wenyu</mods:namePart>
<mods:affiliation id="4A0B03CD59FC5812E87BFDB5CADA958F">Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China. &amp; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China.</mods:affiliation>
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<mods:namePart id="430A742A2128E7AF1B14CA6CFFC0F981">Rioual, Patrick</mods:namePart>
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<mods:affiliation id="89F3E2620B6DEDC816E2C410E3EEF658">Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China. &amp; CAS Center for Excellence in Life and Paleoenvironment, Beijing, China. &amp; prioual @ mail. iggcas. ac. cn; https: // orcid. org / 0000 - 0001 - 9491 - 91977</mods:affiliation>
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<mods:namePart id="A5DE38447E60385652EEF2185D6CB22F">Luo, Hai</mods:namePart>
<mods:affiliation id="7B7C8F30125EF426DF77EF4914FB9BB6">Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China. &amp; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China.</mods:affiliation>
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<mods:namePart id="F85CAA8082F76E8D309CC3502F479A17">Li, Jingjing</mods:namePart>
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<mods:affiliation id="9CC4B5F137B61BB4B9B7923828359257">School of Earth Sciences and Resources, China University of Geosciences, Beijing, China. &amp; Lijingjing @ cugb. edu. cn; https: // orcid. org / 0009 - 0003 - 8605 - 7533</mods:affiliation>
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<mods:affiliation id="D087366E492DF9832309ABF50F67F972">Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China. &amp; wangluo @ mail. iggcas. ac. cn; https: // orcid. org / 0000 - 0003 - 2217 - 8478</mods:affiliation>
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<mods:date id="626F9C053B6197F554BB302E37C13A5B">2023</mods:date>
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<heading id="AB6F81F5FFED0B2DFCBCF169FB1AFBBF" bold="true" box="[136,1132,1076,1103]" fontSize="11" level="1" pageId="2" pageNumber="225" reason="1">
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<taxonomicName id="37984D1AFFED0B2DFCBCF169FD05FBBF" authority="He, Rioual &amp; Wang" authorityName="He, Rioual &amp; Wang" authorityYear="2023" box="[136,627,1076,1103]" class="Bacillariophyceae" family="Aulacoseiraceae" genus="Aulacoseira" higherTaxonomySource="GBIF" kingdom="Chromista" order="Aulacoseirales" pageId="2" pageNumber="225" phylum="Ochrophyta" rank="species" species="huguang" status="sp. nov.">
<emphasis id="C2ECEA8BFFED0B2DFCBCF169FEF4FBBE" bold="true" box="[136,386,1076,1103]" italics="true" pageId="2" pageNumber="225">Aulacoseira huguang</emphasis>
He, Rioual &amp; Wang
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(LM:
<figureCitation id="68A32A1CFFED0B2DFF2CF169FCFDFBBF" box="[792,907,1076,1102]" captionStart="FIGURES 255" captionStartId="3.[136,243,1521,1543]" captionTargetBox="[208,1356,191,1478]" captionTargetId="figure-120@3.[779,916,723,878]" captionTargetPageId="3" captionText="FIGURES 255. LM images of Aulacoseira huguang sp. nov., taken from the holotype population (sample HGY-A5-189) under bright field and DIC (except for Figs 1011, taken under phase contrast). 225. Valve views, each specimen is seen under two different focus plans. 2631. Girdle views of single valves showing the range in mantle height. 3251. Girdle views of complete frustules, each specimen seen under two or three different focus plans. 5455. Short chain composed of two frustules in girdle view. Scale bar = 5 µm. Figs 4547 correspond to the holotype specimen." figureDoi="http://doi.org/10.5281/zenodo.10281857" httpUri="https://zenodo.org/record/10281857/files/figure.png" pageId="2" pageNumber="225">Figs 255</figureCitation>
, SEM:
<figureCitation id="68A32A1CFFED0B2DFFD0F169FB12FBBF" box="[996,1124,1076,1102]" captionStart="FIGURES 5667" captionStartId="4.[136,243,1589,1611]" captionTargetBox="[308,1294,198,1564]" captionTargetId="figure-42@4.[508,1074,776,1124]" captionTargetPageId="4" captionText="FIGURES 5667. SEM images of Aulacoseira huguang, taken from the holotype population (sample HGY-A5-189) Fig. 56. Oblique view of a single valve showing from the top to the bottom of the valve: the row of spines that occurs around the circumference of the valve face, the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules, the ringleist, projecting deep into the valve interior. Fig. 57. Mantle view of a single valve showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 58. Oblique view of a complete frustule, showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 59. Oblique view showing the valve face with evenly spaced areolae, decreasing in size from the edges to the centre of the valve. An areola is positioned between each spine. Figs 6062. External views of partly corroded valves showing round areolae of various size. Fig. 63. Ringleist view. Fig. 64. Girdle view showing conical spines, stout at the base and bluntly rounded at the tip, raised from two ribs on the mantle. Siliceous nodules are visible on the collum at the basis of each rib, with more nodules on the ribs. Fig. 65. Internal view of a broken valve. The internal opening of one rimoportula (arrow) is visible on the ringleist. Fig. 66. External view of a broken frustule. In the broken valve, both rimoportulae are visible. They are placed in opposite positions on the perimeter of the valve (arrows). Fig. 67. Internal view of a broken valve showing the internal openings of two rimoportulae (arrows) which are visible on the ringleist. The two rimoportulae are placed in opposite positions on the perimeter of the valve. Scale bars = 3µm." figureDoi="http://doi.org/10.5281/zenodo.10281861" httpUri="https://zenodo.org/record/10281861/files/figure.png" pageId="2" pageNumber="225">Figs 5667</figureCitation>
)
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<subSubSection id="B8826512FFED0B2DFCBCF121FE7FF927" pageId="2" pageNumber="225" type="description">
<paragraph id="F0273699FFED0B2DFCBCF121FA31FAD7" blockId="2.[136,1452,1148,2038]" pageId="2" pageNumber="225">
<emphasis id="C2ECEA8BFFED0B2DFCBCF121FE1DFB67" bold="true" box="[136,363,1148,1174]" pageId="2" pageNumber="225">Species description</emphasis>
:—LM observations (
<figureCitation id="68A32A1CFFED0B2DFE6EF121FDB9FB66" box="[602,719,1148,1175]" captionStart="FIGURES 255" captionStartId="3.[136,243,1521,1543]" captionTargetBox="[208,1356,191,1478]" captionTargetId="figure-120@3.[779,916,723,878]" captionTargetPageId="3" captionText="FIGURES 255. LM images of Aulacoseira huguang sp. nov., taken from the holotype population (sample HGY-A5-189) under bright field and DIC (except for Figs 1011, taken under phase contrast). 225. Valve views, each specimen is seen under two different focus plans. 2631. Girdle views of single valves showing the range in mantle height. 3251. Girdle views of complete frustules, each specimen seen under two or three different focus plans. 5455. Short chain composed of two frustules in girdle view. Scale bar = 5 µm. Figs 4547 correspond to the holotype specimen." figureDoi="http://doi.org/10.5281/zenodo.10281857" httpUri="https://zenodo.org/record/10281857/files/figure.png" pageId="2" pageNumber="225">Figs 255</figureCitation>
): Cells cylindrical, solitary or forming short chains composed of 2 cells. Valve diameter 3.96.2 µm, mantle height 2.13.2 µm (n = 27). Ratio between mantle height and diameter varies from 0.27 to 0.54. Pervalvar rows of areolae 1420 /10 µm. A row of spines occurs around the circumference of the valve face. The arrangement of areolae on the surface of the valve mantle is slightly dextrose. On the valve face the areolae are evenly spaced without a clear pattern. Rimoportulae not conspicuous under the light microscope.
</paragraph>
<paragraph id="F0273699FFED0B2DFC89F06DFE7FF927" blockId="2.[136,1452,1148,2038]" pageId="2" pageNumber="225">
SEM observations (
<figureCitation id="68A32A1CFFED0B2DFDAFF06DFD69FABA" box="[411,543,1328,1355]" captionStart="FIGURES 5667" captionStartId="4.[136,243,1589,1611]" captionTargetBox="[308,1294,198,1564]" captionTargetId="figure-42@4.[508,1074,776,1124]" captionTargetPageId="4" captionText="FIGURES 5667. SEM images of Aulacoseira huguang, taken from the holotype population (sample HGY-A5-189) Fig. 56. Oblique view of a single valve showing from the top to the bottom of the valve: the row of spines that occurs around the circumference of the valve face, the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules, the ringleist, projecting deep into the valve interior. Fig. 57. Mantle view of a single valve showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 58. Oblique view of a complete frustule, showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 59. Oblique view showing the valve face with evenly spaced areolae, decreasing in size from the edges to the centre of the valve. An areola is positioned between each spine. Figs 6062. External views of partly corroded valves showing round areolae of various size. Fig. 63. Ringleist view. Fig. 64. Girdle view showing conical spines, stout at the base and bluntly rounded at the tip, raised from two ribs on the mantle. Siliceous nodules are visible on the collum at the basis of each rib, with more nodules on the ribs. Fig. 65. Internal view of a broken valve. The internal opening of one rimoportula (arrow) is visible on the ringleist. Fig. 66. External view of a broken frustule. In the broken valve, both rimoportulae are visible. They are placed in opposite positions on the perimeter of the valve (arrows). Fig. 67. Internal view of a broken valve showing the internal openings of two rimoportulae (arrows) which are visible on the ringleist. The two rimoportulae are placed in opposite positions on the perimeter of the valve. Scale bars = 3µm." figureDoi="http://doi.org/10.5281/zenodo.10281861" httpUri="https://zenodo.org/record/10281861/files/figure.png" pageId="2" pageNumber="225">Figs 5667</figureCitation>
): On the slightly convex mantle (
<figureCitation id="68A32A1CFFED0B2DFFA0F06DFB60FABB" box="[916,1046,1328,1355]" captionStart="FIGURES 5667" captionStartId="4.[136,243,1589,1611]" captionTargetBox="[308,1294,198,1564]" captionTargetId="figure-42@4.[508,1074,776,1124]" captionTargetPageId="4" captionText="FIGURES 5667. SEM images of Aulacoseira huguang, taken from the holotype population (sample HGY-A5-189) Fig. 56. Oblique view of a single valve showing from the top to the bottom of the valve: the row of spines that occurs around the circumference of the valve face, the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules, the ringleist, projecting deep into the valve interior. Fig. 57. Mantle view of a single valve showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 58. Oblique view of a complete frustule, showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 59. Oblique view showing the valve face with evenly spaced areolae, decreasing in size from the edges to the centre of the valve. An areola is positioned between each spine. Figs 6062. External views of partly corroded valves showing round areolae of various size. Fig. 63. Ringleist view. Fig. 64. Girdle view showing conical spines, stout at the base and bluntly rounded at the tip, raised from two ribs on the mantle. Siliceous nodules are visible on the collum at the basis of each rib, with more nodules on the ribs. Fig. 65. Internal view of a broken valve. The internal opening of one rimoportula (arrow) is visible on the ringleist. Fig. 66. External view of a broken frustule. In the broken valve, both rimoportulae are visible. They are placed in opposite positions on the perimeter of the valve (arrows). Fig. 67. Internal view of a broken valve showing the internal openings of two rimoportulae (arrows) which are visible on the ringleist. The two rimoportulae are placed in opposite positions on the perimeter of the valve. Scale bars = 3µm." figureDoi="http://doi.org/10.5281/zenodo.10281861" httpUri="https://zenodo.org/record/10281861/files/figure.png" pageId="2" pageNumber="225">Figs 56, 64</figureCitation>
), areolae generally circular in shape but elongated near the collum. Areolae generally small, their size decreasing from the collum towards the valve face (
<figureCitation id="68A32A1CFFED0B2DFCA4F025FE63FA62" box="[144,277,1400,1427]" captionStart="FIGURES 5667" captionStartId="4.[136,243,1589,1611]" captionTargetBox="[308,1294,198,1564]" captionTargetId="figure-42@4.[508,1074,776,1124]" captionTargetPageId="4" captionText="FIGURES 5667. SEM images of Aulacoseira huguang, taken from the holotype population (sample HGY-A5-189) Fig. 56. Oblique view of a single valve showing from the top to the bottom of the valve: the row of spines that occurs around the circumference of the valve face, the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules, the ringleist, projecting deep into the valve interior. Fig. 57. Mantle view of a single valve showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 58. Oblique view of a complete frustule, showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 59. Oblique view showing the valve face with evenly spaced areolae, decreasing in size from the edges to the centre of the valve. An areola is positioned between each spine. Figs 6062. External views of partly corroded valves showing round areolae of various size. Fig. 63. Ringleist view. Fig. 64. Girdle view showing conical spines, stout at the base and bluntly rounded at the tip, raised from two ribs on the mantle. Siliceous nodules are visible on the collum at the basis of each rib, with more nodules on the ribs. Fig. 65. Internal view of a broken valve. The internal opening of one rimoportula (arrow) is visible on the ringleist. Fig. 66. External view of a broken frustule. In the broken valve, both rimoportulae are visible. They are placed in opposite positions on the perimeter of the valve (arrows). Fig. 67. Internal view of a broken valve showing the internal openings of two rimoportulae (arrows) which are visible on the ringleist. The two rimoportulae are placed in opposite positions on the perimeter of the valve. Scale bars = 3µm." figureDoi="http://doi.org/10.5281/zenodo.10281861" httpUri="https://zenodo.org/record/10281861/files/figure.png" pageId="2" pageNumber="225">Figs 5862</figureCitation>
). Areolae with simple structure (
<figureCitation id="68A32A1CFFED0B2DFEBEF025FD96FA63" box="[650,736,1400,1426]" captionStart="FIGURES 5667" captionStartId="4.[136,243,1589,1611]" captionTargetBox="[308,1294,198,1564]" captionTargetId="figure-42@4.[508,1074,776,1124]" captionTargetPageId="4" captionText="FIGURES 5667. SEM images of Aulacoseira huguang, taken from the holotype population (sample HGY-A5-189) Fig. 56. Oblique view of a single valve showing from the top to the bottom of the valve: the row of spines that occurs around the circumference of the valve face, the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules, the ringleist, projecting deep into the valve interior. Fig. 57. Mantle view of a single valve showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 58. Oblique view of a complete frustule, showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 59. Oblique view showing the valve face with evenly spaced areolae, decreasing in size from the edges to the centre of the valve. An areola is positioned between each spine. Figs 6062. External views of partly corroded valves showing round areolae of various size. Fig. 63. Ringleist view. Fig. 64. Girdle view showing conical spines, stout at the base and bluntly rounded at the tip, raised from two ribs on the mantle. Siliceous nodules are visible on the collum at the basis of each rib, with more nodules on the ribs. Fig. 65. Internal view of a broken valve. The internal opening of one rimoportula (arrow) is visible on the ringleist. Fig. 66. External view of a broken frustule. In the broken valve, both rimoportulae are visible. They are placed in opposite positions on the perimeter of the valve (arrows). Fig. 67. Internal view of a broken valve showing the internal openings of two rimoportulae (arrows) which are visible on the ringleist. The two rimoportulae are placed in opposite positions on the perimeter of the valve. Scale bars = 3µm." figureDoi="http://doi.org/10.5281/zenodo.10281861" httpUri="https://zenodo.org/record/10281861/files/figure.png" pageId="2" pageNumber="225">Fig. 64</figureCitation>
). Valve face flat or slightly concave with round areolae evenly spaced over the entire surface, smaller at the centre of the valve than near the edges (
<figureCitation id="68A32A1CFFED0B2DF87CF0C1FBBAFA46" box="[1096,1228,1436,1463]" captionStart="FIGURES 5667" captionStartId="4.[136,243,1589,1611]" captionTargetBox="[308,1294,198,1564]" captionTargetId="figure-42@4.[508,1074,776,1124]" captionTargetPageId="4" captionText="FIGURES 5667. SEM images of Aulacoseira huguang, taken from the holotype population (sample HGY-A5-189) Fig. 56. Oblique view of a single valve showing from the top to the bottom of the valve: the row of spines that occurs around the circumference of the valve face, the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules, the ringleist, projecting deep into the valve interior. Fig. 57. Mantle view of a single valve showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 58. Oblique view of a complete frustule, showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 59. Oblique view showing the valve face with evenly spaced areolae, decreasing in size from the edges to the centre of the valve. An areola is positioned between each spine. Figs 6062. External views of partly corroded valves showing round areolae of various size. Fig. 63. Ringleist view. Fig. 64. Girdle view showing conical spines, stout at the base and bluntly rounded at the tip, raised from two ribs on the mantle. Siliceous nodules are visible on the collum at the basis of each rib, with more nodules on the ribs. Fig. 65. Internal view of a broken valve. The internal opening of one rimoportula (arrow) is visible on the ringleist. Fig. 66. External view of a broken frustule. In the broken valve, both rimoportulae are visible. They are placed in opposite positions on the perimeter of the valve (arrows). Fig. 67. Internal view of a broken valve showing the internal openings of two rimoportulae (arrows) which are visible on the ringleist. The two rimoportulae are placed in opposite positions on the perimeter of the valve. Scale bars = 3µm." figureDoi="http://doi.org/10.5281/zenodo.10281861" httpUri="https://zenodo.org/record/10281861/files/figure.png" pageId="2" pageNumber="225">Figs 5864</figureCitation>
). The surface of the collum is smooth only ornamented by a row of tiny siliceous nodules generally positioned at the basis of the ribs (
<figureCitation id="68A32A1CFFED0B2DF947F09DFF8DFA0F" captionStart="FIGURES 5667" captionStartId="4.[136,243,1589,1611]" captionTargetBox="[308,1294,198,1564]" captionTargetId="figure-42@4.[508,1074,776,1124]" captionTargetPageId="4" captionText="FIGURES 5667. SEM images of Aulacoseira huguang, taken from the holotype population (sample HGY-A5-189) Fig. 56. Oblique view of a single valve showing from the top to the bottom of the valve: the row of spines that occurs around the circumference of the valve face, the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules, the ringleist, projecting deep into the valve interior. Fig. 57. Mantle view of a single valve showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 58. Oblique view of a complete frustule, showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 59. Oblique view showing the valve face with evenly spaced areolae, decreasing in size from the edges to the centre of the valve. An areola is positioned between each spine. Figs 6062. External views of partly corroded valves showing round areolae of various size. Fig. 63. Ringleist view. Fig. 64. Girdle view showing conical spines, stout at the base and bluntly rounded at the tip, raised from two ribs on the mantle. Siliceous nodules are visible on the collum at the basis of each rib, with more nodules on the ribs. Fig. 65. Internal view of a broken valve. The internal opening of one rimoportula (arrow) is visible on the ringleist. Fig. 66. External view of a broken frustule. In the broken valve, both rimoportulae are visible. They are placed in opposite positions on the perimeter of the valve (arrows). Fig. 67. Internal view of a broken valve showing the internal openings of two rimoportulae (arrows) which are visible on the ringleist. The two rimoportulae are placed in opposite positions on the perimeter of the valve. Scale bars = 3µm." figureDoi="http://doi.org/10.5281/zenodo.10281861" httpUri="https://zenodo.org/record/10281861/files/figure.png" pageId="2" pageNumber="225">Figs. 56, 57, 63</figureCitation>
). On the surface of mantle ribs, siliceous nodules are randomly distributed (
<figureCitation id="68A32A1CFFED0B2DF87FF0B9FB80FA0F" box="[1099,1270,1508,1535]" captionStart="FIGURES 5667" captionStartId="4.[136,243,1589,1611]" captionTargetBox="[308,1294,198,1564]" captionTargetId="figure-42@4.[508,1074,776,1124]" captionTargetPageId="4" captionText="FIGURES 5667. SEM images of Aulacoseira huguang, taken from the holotype population (sample HGY-A5-189) Fig. 56. Oblique view of a single valve showing from the top to the bottom of the valve: the row of spines that occurs around the circumference of the valve face, the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules, the ringleist, projecting deep into the valve interior. Fig. 57. Mantle view of a single valve showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 58. Oblique view of a complete frustule, showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 59. Oblique view showing the valve face with evenly spaced areolae, decreasing in size from the edges to the centre of the valve. An areola is positioned between each spine. Figs 6062. External views of partly corroded valves showing round areolae of various size. Fig. 63. Ringleist view. Fig. 64. Girdle view showing conical spines, stout at the base and bluntly rounded at the tip, raised from two ribs on the mantle. Siliceous nodules are visible on the collum at the basis of each rib, with more nodules on the ribs. Fig. 65. Internal view of a broken valve. The internal opening of one rimoportula (arrow) is visible on the ringleist. Fig. 66. External view of a broken frustule. In the broken valve, both rimoportulae are visible. They are placed in opposite positions on the perimeter of the valve (arrows). Fig. 67. Internal view of a broken valve showing the internal openings of two rimoportulae (arrows) which are visible on the ringleist. The two rimoportulae are placed in opposite positions on the perimeter of the valve. Scale bars = 3µm." figureDoi="http://doi.org/10.5281/zenodo.10281861" httpUri="https://zenodo.org/record/10281861/files/figure.png" pageId="2" pageNumber="225">Figs 56, 57, 63</figureCitation>
). The spines are conical, stout at the base and bluntly rounded at the tip, raised from two ribs on the mantle (
<figureCitation id="68A32A1CFFED0B2DF894F355FA21F9D3" box="[1184,1367,1544,1571]" captionStart="FIGURES 5667" captionStartId="4.[136,243,1589,1611]" captionTargetBox="[308,1294,198,1564]" captionTargetId="figure-42@4.[508,1074,776,1124]" captionTargetPageId="4" captionText="FIGURES 5667. SEM images of Aulacoseira huguang, taken from the holotype population (sample HGY-A5-189) Fig. 56. Oblique view of a single valve showing from the top to the bottom of the valve: the row of spines that occurs around the circumference of the valve face, the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules, the ringleist, projecting deep into the valve interior. Fig. 57. Mantle view of a single valve showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 58. Oblique view of a complete frustule, showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 59. Oblique view showing the valve face with evenly spaced areolae, decreasing in size from the edges to the centre of the valve. An areola is positioned between each spine. Figs 6062. External views of partly corroded valves showing round areolae of various size. Fig. 63. Ringleist view. Fig. 64. Girdle view showing conical spines, stout at the base and bluntly rounded at the tip, raised from two ribs on the mantle. Siliceous nodules are visible on the collum at the basis of each rib, with more nodules on the ribs. Fig. 65. Internal view of a broken valve. The internal opening of one rimoportula (arrow) is visible on the ringleist. Fig. 66. External view of a broken frustule. In the broken valve, both rimoportulae are visible. They are placed in opposite positions on the perimeter of the valve (arrows). Fig. 67. Internal view of a broken valve showing the internal openings of two rimoportulae (arrows) which are visible on the ringleist. The two rimoportulae are placed in opposite positions on the perimeter of the valve. Scale bars = 3µm." figureDoi="http://doi.org/10.5281/zenodo.10281861" httpUri="https://zenodo.org/record/10281861/files/figure.png" pageId="2" pageNumber="225">Figs. 56, 57, 64</figureCitation>
). Spine length of about 1/51/4 of the valve height. Spines slightly curve towards the outside, separated from each other by areolae. Only separating spines were observed. Ringleist 1.21.5 µm in width, shelf-like, projecting far into the cell interior, thicker at its inner edges (
<figureCitation id="68A32A1CFFED0B2DFE37F329FDF5F97F" box="[515,643,1652,1679]" captionStart="FIGURES 5667" captionStartId="4.[136,243,1589,1611]" captionTargetBox="[308,1294,198,1564]" captionTargetId="figure-42@4.[508,1074,776,1124]" captionTargetPageId="4" captionText="FIGURES 5667. SEM images of Aulacoseira huguang, taken from the holotype population (sample HGY-A5-189) Fig. 56. Oblique view of a single valve showing from the top to the bottom of the valve: the row of spines that occurs around the circumference of the valve face, the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules, the ringleist, projecting deep into the valve interior. Fig. 57. Mantle view of a single valve showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 58. Oblique view of a complete frustule, showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 59. Oblique view showing the valve face with evenly spaced areolae, decreasing in size from the edges to the centre of the valve. An areola is positioned between each spine. Figs 6062. External views of partly corroded valves showing round areolae of various size. Fig. 63. Ringleist view. Fig. 64. Girdle view showing conical spines, stout at the base and bluntly rounded at the tip, raised from two ribs on the mantle. Siliceous nodules are visible on the collum at the basis of each rib, with more nodules on the ribs. Fig. 65. Internal view of a broken valve. The internal opening of one rimoportula (arrow) is visible on the ringleist. Fig. 66. External view of a broken frustule. In the broken valve, both rimoportulae are visible. They are placed in opposite positions on the perimeter of the valve (arrows). Fig. 67. Internal view of a broken valve showing the internal openings of two rimoportulae (arrows) which are visible on the ringleist. The two rimoportulae are placed in opposite positions on the perimeter of the valve. Scale bars = 3µm." figureDoi="http://doi.org/10.5281/zenodo.10281861" httpUri="https://zenodo.org/record/10281861/files/figure.png" pageId="2" pageNumber="225">Figs 57, 63</figureCitation>
). Rimoportulae, two per valve, located in the ringleist, sessile, extending from mantle to about 1/2 to 2/3 of the ringleist and placed in opposite positions on the perimeter of the valve (
<figureCitation id="68A32A1CFFED0B2DF97EF3C5FF8AF927" captionStart="FIGURES 5667" captionStartId="4.[136,243,1589,1611]" captionTargetBox="[308,1294,198,1564]" captionTargetId="figure-42@4.[508,1074,776,1124]" captionTargetPageId="4" captionText="FIGURES 5667. SEM images of Aulacoseira huguang, taken from the holotype population (sample HGY-A5-189) Fig. 56. Oblique view of a single valve showing from the top to the bottom of the valve: the row of spines that occurs around the circumference of the valve face, the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules, the ringleist, projecting deep into the valve interior. Fig. 57. Mantle view of a single valve showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 58. Oblique view of a complete frustule, showing the pervalvar rows of areolae slightly dextrorse, the smooth collum with tiny nodules and external opening of one rimoportula (arrow). Fig. 59. Oblique view showing the valve face with evenly spaced areolae, decreasing in size from the edges to the centre of the valve. An areola is positioned between each spine. Figs 6062. External views of partly corroded valves showing round areolae of various size. Fig. 63. Ringleist view. Fig. 64. Girdle view showing conical spines, stout at the base and bluntly rounded at the tip, raised from two ribs on the mantle. Siliceous nodules are visible on the collum at the basis of each rib, with more nodules on the ribs. Fig. 65. Internal view of a broken valve. The internal opening of one rimoportula (arrow) is visible on the ringleist. Fig. 66. External view of a broken frustule. In the broken valve, both rimoportulae are visible. They are placed in opposite positions on the perimeter of the valve (arrows). Fig. 67. Internal view of a broken valve showing the internal openings of two rimoportulae (arrows) which are visible on the ringleist. The two rimoportulae are placed in opposite positions on the perimeter of the valve. Scale bars = 3µm." figureDoi="http://doi.org/10.5281/zenodo.10281861" httpUri="https://zenodo.org/record/10281861/files/figure.png" pageId="2" pageNumber="225">Figs. 56, 57, 6466</figureCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="B8826512FFED0B2CFC89F3BDFDBFF8BD" lastPageId="3" lastPageNumber="226" pageId="2" pageNumber="225" type="materials_examined">
<paragraph id="F0273699FFED0B2DFC89F3BDFF88F85F" blockId="2.[136,1452,1148,2038]" pageId="2" pageNumber="225">
<materialsCitation id="40F03CC4FFED0B2DFC89F3BDFF88F85F" collectionCode="IGGDC" country="China" county="The" latitude="-11.2" location="Institute of Geology" longLatPrecision="7781" longitude="4.5" municipality="Herbarium" pageId="2" pageNumber="225" specimenCode="IGGDC-HGY-A5-189" specimenCount="1" stateProvince="York" typeStatus="holotype">
<emphasis id="C2ECEA8BFFED0B2DFC89F3BDFE39F90B" bold="true" box="[189,335,1760,1786]" pageId="2" pageNumber="225">
<typeStatus id="2F23883BFFED0B2DFC89F3BDFE5BF90B" box="[189,301,1760,1786]" pageId="2" pageNumber="225" type="holotype">Holotype</typeStatus>
:—
</emphasis>
The holotype slide (
<specimenCode id="A03E9EE2FFED0B2DFE09F3BDFC4DF90A" box="[573,827,1760,1787]" pageId="2" pageNumber="225">IGGDC-HGY-A5-189</specimenCode>
) is deposited at the Herbarium of
<taxonomicName id="37984D1AFFED0B2DF8EEF3BDFAD1F90B" box="[1242,1447,1760,1786]" class="Bacillariophyceae" higherTaxonomySource="GBIF" kingdom="Chromista" pageId="2" pageNumber="225" phylum="Ochrophyta" rank="class">Bacillariophyceae</taxonomicName>
, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, Peoples Republic of China (the herbarium acronym,
<collectionCode id="9689AE5CFFED0B2DFD44F275FEBAF8B3" box="[368,460,1832,1858]" pageId="2" pageNumber="225">IGGDC</collectionCode>
, follows the Index Herbariorum of the New York Botanical Garden and is listed at https:// sweetgum.nybg.org/science/ih/). The holotype specimen is illustrated in
<figureCitation id="68A32A1CFFED0B2DFF8AF211FB49F896" box="[958,1087,1868,1895]" captionStart="FIGURES 255" captionStartId="3.[136,243,1521,1543]" captionTargetBox="[208,1356,191,1478]" captionTargetId="figure-120@3.[779,916,723,878]" captionTargetPageId="3" captionText="FIGURES 255. LM images of Aulacoseira huguang sp. nov., taken from the holotype population (sample HGY-A5-189) under bright field and DIC (except for Figs 1011, taken under phase contrast). 225. Valve views, each specimen is seen under two different focus plans. 2631. Girdle views of single valves showing the range in mantle height. 3251. Girdle views of complete frustules, each specimen seen under two or three different focus plans. 5455. Short chain composed of two frustules in girdle view. Scale bar = 5 µm. Figs 4547 correspond to the holotype specimen." figureDoi="http://doi.org/10.5281/zenodo.10281857" httpUri="https://zenodo.org/record/10281857/files/figure.png" pageId="2" pageNumber="225">Figs 4547</figureCitation>
, and can be located on the slide using England Finder L47/1 or at the coordinates
<geoCoordinate id="95AC505EFFED0B2DFE8EF22DFC77F87B" box="[698,769,1904,1930]" degrees="11. 2" direction="south" orientation="latitude" pageId="2" pageNumber="225" precision="5555" value="-11.2">11.2 S</geoCoordinate>
and
<geoCoordinate id="95AC505EFFED0B2DFF0CF22DFC02F87A" box="[824,884,1904,1931]" degrees="4. 5" direction="east" orientation="longitude" pageId="2" pageNumber="225" precision="5555" value="4.5">4.5 E</geoCoordinate>
following the method described by
<bibRefCitation id="94094B68FFED0B2DF938F22DFF8CF85F" author="Sterrenburg, F. A. S. &amp; Hamilton, P. &amp; Williams, D." pageId="2" pageNumber="225" pagination="91 - 94" refId="ref7607" refString="Sterrenburg, F. A. S., Hamilton, P. &amp; Williams, D. (2012) Universal ccordinate method for locating light-microscope specimen. Diatom Research 27: 91 - 94. https: // doi. org / 10.1080 / 0269249 X. 2012.688493" type="journal article" year="2012">
Sterrenburg
<emphasis id="C2ECEA8BFFED0B2DF9A3F22CFFE8F85F" italics="true" pageId="2" pageNumber="225">et al</emphasis>
. (2012)
</bibRefCitation>
.
</materialsCitation>
</paragraph>
<paragraph id="F0273699FFED0B2DFC89F2E5FE3BF807" blockId="2.[136,1452,1148,2038]" pageId="2" pageNumber="225">
<emphasis id="C2ECEA8BFFED0B2DFC89F2E5FE4FF823" bold="true" box="[189,313,1976,2002]" pageId="2" pageNumber="225">
<typeStatus id="2F23883BFFED0B2DFC89F2E5FE61F823" box="[189,279,1976,2002]" pageId="2" pageNumber="225" type="isotype">Isotype</typeStatus>
:—
</emphasis>
An
<typeStatus id="2F23883BFFED0B2DFD51F2E5FEC0F823" box="[357,438,1976,2002]" pageId="2" pageNumber="225" type="isotype">isotype</typeStatus>
slide
<collectionCode id="9689AE5CFFED0B2DFDCAF2E4FD5CF822" box="[510,554,1977,2003]" country="United Kingdom" name="Bristol Museum" pageId="2" pageNumber="225">BM</collectionCode>
98365 is deposited in the collection of the Natural History Museum, London,
<collectingCountry id="888F7609FFED0B2DFCBCF281FE3EF807" box="[136,328,2012,2038]" name="United Kingdom" pageId="2" pageNumber="225">United Kingdom</collectingCountry>
.
</paragraph>
<caption id="A4E76611FFEC0B2CFCBCF0ACFE87F966" ID-DOI="http://doi.org/10.5281/zenodo.10281857" ID-Zenodo-Dep="10281857" httpUri="https://zenodo.org/record/10281857/files/figure.png" pageId="3" pageNumber="226" startId="3.[136,243,1521,1543]" targetBox="[208,1356,191,1478]" targetPageId="3" targetType="figure">
<paragraph id="F0273699FFEC0B2CFCBCF0ACFE87F966" blockId="3.[136,1452,1521,1687]" pageId="3" pageNumber="226">
<emphasis id="C2ECEA8BFFEC0B2CFCBCF0ACFE5CF9F7" bold="true" box="[136,298,1521,1543]" pageId="3" pageNumber="226">FIGURES 255</emphasis>
. LM images of
<emphasis id="C2ECEA8BFFEC0B2CFDF3F0ACFD91F9F6" box="[455,743,1521,1543]" italics="true" pageId="3" pageNumber="226">
<taxonomicName id="37984D1AFFEC0B2CFDF3F0ACFDE0F9F7" authority="He &amp; Rioual &amp; Luo &amp; Li &amp; Wang, 2023" authorityName="He &amp; Rioual &amp; Luo &amp; Li &amp; Wang" authorityYear="2023" box="[455,662,1521,1542]" class="Bacillariophyceae" family="Aulacoseiraceae" genus="Aulacoseira" higherTaxonomySource="GBIF" kingdom="Chromista" order="Aulacoseirales" pageId="3" pageNumber="226" phylum="Ochrophyta" rank="species" species="huguang" status="sp. nov.">Aulacoseira huguang</taxonomicName>
<taxonomicNameLabel id="D9DF57F0FFEC0B2CFEA9F0AFFD91F9F6" box="[669,743,1522,1543]" pageId="3" pageNumber="226" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
, taken from the holotype population (sample HGY-A5-189) under bright field and DIC (except for Figs 1011, taken under phase contrast). 225. Valve views, each specimen is seen under two different focus plans. 2631. Girdle views of single valves showing the range in mantle height. 3251. Girdle views of complete frustules, each specimen seen under two or three different focus plans. 5455. Short chain composed of two frustules in girdle view. Scale bar = 5 µm. Figs 4547 correspond to the holotype specimen.
</paragraph>
</caption>
<paragraph id="F0273699FFEC0B2CFC89F398FDBFF8BD" blockId="3.[136,1452,1733,2083]" pageId="3" pageNumber="226">
<emphasis id="C2ECEA8BFFEC0B2CFC89F398FE08F92E" bold="true" box="[189,382,1733,1759]" pageId="3" pageNumber="226">Type locality:—</emphasis>
<collectingCountry id="888F7609FFEC0B2CFD4AF398FEB2F92E" box="[382,452,1733,1759]" name="China" pageId="3" pageNumber="226">China</collectingCountry>
,
<collectingRegion id="325CF87BFFEC0B2CFDE6F398FDB5F92E" box="[466,707,1733,1759]" country="China" name="Guangdong" pageId="3" pageNumber="226">Guangdong province</collectingRegion>
, Zhanjiang municipality, Huguangyan maar lake, sampling point (
<geoCoordinate id="95AC505EFFEC0B2CFCA5F3B4FE40F8F2" box="[145,310,1769,1795]" degrees="21" direction="north" minutes="8" orientation="latitude" pageId="3" pageNumber="226" precision="1" seconds="39.77" value="21.14438">21°839.77N</geoCoordinate>
,
<geoCoordinate id="95AC505EFFEC0B2CFD77F3B4FE89F8F2" box="[323,511,1769,1795]" degrees="110" direction="east" minutes="16" orientation="longitude" pageId="3" pageNumber="226" precision="1" seconds="39.72" value="110.2777">110°1639.72E</geoCoordinate>
,
<quantity id="37609B7CFFEC0B2CFE38F3B4FD31F8F5" box="[524,583,1769,1796]" metricMagnitude="1" metricUnit="m" metricValue="9.0" pageId="3" pageNumber="226" unit="m" value="90.0">90 m</quantity>
a.s.l.). Fossil material from sediment samples dated to the Lateglacial (from 17,000 to 10,000 years BP).
<typeStatus id="2F23883BFFEC0B2CFDFCF253FD76F8D9" box="[456,512,1806,1832]" pageId="3" pageNumber="226">Type</typeStatus>
sample corresponding to core depth
<quantity id="37609B7CFFEC0B2CFFAAF250FC82F8D9" box="[926,1012,1805,1832]" metricMagnitude="0" metricUnit="m" metricValue="8.959999999999999" pageId="3" pageNumber="226" unit="cm" value="896.0">896 cm</quantity>
, dated to ~10,280 years before present. Collected by Dr
<emphasis id="C2ECEA8BFFEC0B2CFD76F26FFDB4F8BA" box="[322,706,1841,1867]" italics="true" pageId="3" pageNumber="226">
Luo Wang on
<date id="84261059FFEC0B2CFDE9F26CFE8FF8BA" box="[477,505,1841,1867]" pageId="3" pageNumber="226" value="2010-09-10">10</date>
<superScript id="07ED9BD1FFEC0B2CFDCDF26CFD70F8CE" attach="left" box="[505,518,1841,1855]" fontSize="6" pageId="3" pageNumber="226">th</superScript>
September 2010
</emphasis>
.
</paragraph>
</subSubSection>
<subSubSection id="B8826512FFEC0B2CFC89F208FC7DF7D2" pageId="3" pageNumber="226" type="etymology">
<paragraph id="F0273699FFEC0B2CFC89F208FCEBF89E" blockId="3.[136,1452,1733,2083]" box="[189,925,1877,1904]" pageId="3" pageNumber="226">
<emphasis id="C2ECEA8BFFEC0B2CFC89F208FE3EF89E" bold="true" box="[189,328,1877,1903]" pageId="3" pageNumber="226">Etymology:</emphasis>
—Named after the lake where the species was found.
</paragraph>
<paragraph id="F0273699FFEC0B2CFC89F224FC7DF7D2" blockId="3.[136,1452,1733,2083]" pageId="3" pageNumber="226">
<emphasis id="C2ECEA8BFFEC0B2CFC89F224FE8AF862" bold="true" box="[189,508,1913,1939]" pageId="3" pageNumber="226">Associated diatom flora:—</emphasis>
The diatom assemblage in the
<typeStatus id="2F23883BFFEC0B2CFF79F224FCD9F862" box="[845,943,1913,1939]" pageId="3" pageNumber="226" type="holotype">holotype</typeStatus>
slide (IGGDC-HGY-A5-189) is composed of
<taxonomicName id="37984D1AFFEC0B2CFCBCF2C0FE01F846" authorityName="Houk &amp; Klee" authorityYear="2004" box="[136,375,1949,1975]" class="Bacillariophyceae" family="Stephanodiscaceae" genus="Discostella" higherTaxonomySource="GBIF" kingdom="Chromista" order="Thalassiosirales" pageId="3" pageNumber="226" phylum="Ochrophyta" rank="species" species="stelligera">
<emphasis id="C2ECEA8BFFEC0B2CFCBCF2C0FE01F846" box="[136,375,1949,1975]" italics="true" pageId="3" pageNumber="226">Discostella stelligera</emphasis>
</taxonomicName>
(49%) (Cleve et Grunow)
<bibRefCitation id="94094B68FFEC0B2CFE97F2C0FCB1F846" author="Houk, V. &amp; Klee, R." box="[675,967,1949,1975]" pageId="3" pageNumber="226" pagination="203 - 228" refId="ref6543" refString="Houk, V. &amp; Klee, R. (2004) The stelligeroid taxa of the genus Cyclotella (Kutzing) Brebisson (Bacillariophyceae) and their transfer into the new genus Discostella gen. nov. Diatom Research 19 (2): 203 - 228." type="journal article" year="2004">Houk &amp; Klee (2004: 208)</bibRefCitation>
;
<taxonomicName id="37984D1AFFEC0B2CFFE7F2C3FB22F846" authorityName="He &amp; Rioual &amp; Luo &amp; Li &amp; Wang" authorityYear="2023" box="[979,1108,1949,1976]" class="Bacillariophyceae" family="Aulacoseiraceae" genus="Aulacoseira" higherTaxonomySource="GBIF" kingdom="Chromista" order="Aulacoseirales" pageId="3" pageNumber="226" phylum="Ochrophyta" rank="species" species="huguang">
<emphasis id="C2ECEA8BFFEC0B2CFFE7F2C3FB22F846" box="[979,1108,1949,1976]" italics="true" pageId="3" pageNumber="226">A. huguang</emphasis>
</taxonomicName>
(24%) He, Rioual &amp; Wang;
<taxonomicName id="37984D1AFFEC0B2CF9A7F2C3FF80F82A" authorityName="Simonsen" authorityYear="1979" baseAuthorityName="Ehrenberg" class="Bacillariophyceae" family="Aulacoseiraceae" genus="Aulacoseira" higherTaxonomySource="GBIF" kingdom="Chromista" order="Aulacoseirales" pageId="3" pageNumber="226" phylum="Ochrophyta" rank="species" species="granulata">
<emphasis id="C2ECEA8BFFEC0B2CF9A7F2C3FF80F82A" italics="true" pageId="3" pageNumber="226">A. granulata</emphasis>
</taxonomicName>
(12%) (Ehrenberg)
<bibRefCitation id="94094B68FFEC0B2CFDE9F29CFDB8F82D" author="Simonsen, R." box="[477,718,1985,2012]" pageId="3" pageNumber="226" pagination="9 - 71" refId="ref7536" refString="Simonsen, R. (1979) The diatom system: ideas on phylogeny. Bacillaria 2: 9 - 71." type="journal article" year="1979">Simonsen (1979: 58)</bibRefCitation>
;
<taxonomicName id="37984D1AFFEC0B2CFEEFF29CFB5CF82A" authorityName="D.B.Czarnecki" authorityYear="1994" baseAuthorityName="F.T.Kutzing" box="[731,1066,1985,2011]" class="Bacillariophyceae" family="Achnanthaceae" genus="Achnanthidium" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="3" pageNumber="226" phylum="Bacillariophyta" rank="species" species="minutissimum">
<emphasis id="C2ECEA8BFFEC0B2CFEEFF29CFB5CF82A" box="[731,1066,1985,2011]" italics="true" pageId="3" pageNumber="226">Achnanthidium minutissimum</emphasis>
</taxonomicName>
(4%) (Kützing)
<bibRefCitation id="94094B68FFEC0B2CF8DCF29CFFC9F7F1" author="Czarnecki, D. B." pageId="3" pageNumber="226" pagination="155 - 174" refId="ref5844" refString="Czarnecki, D. B. (1994) The freshwater diatoms culture collection at Loras College, Dubuque, Iowa. In: Kociolek, J. P. (ed.) Proceedings of the 11 th International Diatom Symposium. Memoirs of the California Academy of Sciences 17: 155 - 174" type="journal article" year="1994">Czarnecki (1994: 157)</bibRefCitation>
;
<taxonomicName id="37984D1AFFEC0B2CFCFDF2BBFEBCF80E" authorityName="Krammer" authorityYear="1997" box="[201,458,2021,2047]" class="Bacillariophyceae" family="Cymbellaceae" genus="Encyonema" higherTaxonomySource="GBIF" kingdom="Chromista" order="Cymbellales" pageId="3" pageNumber="226" phylum="Bacillariophyta" rank="species" species="neogracile">
<emphasis id="C2ECEA8BFFEC0B2CFCFDF2BBFEBCF80E" box="[201,458,2021,2047]" italics="true" pageId="3" pageNumber="226">Encyonema neogracile</emphasis>
</taxonomicName>
(2%)
<bibRefCitation id="94094B68FFEC0B2CFE39F2BBFC72F80E" author="Krammer, K." box="[525,772,2021,2048]" pageId="3" pageNumber="226" pagination="i - iii" refId="ref6956" refString="Krammer, K. (1997) Die cymbelloiden Diatomeen. Eine Monographie der weltweit bekannten Taxa. Teil 1. Allgemeines und Encyonema Part. Bibliotheca Diatomologica 36: [i - iii] [1] - 382." type="journal article" year="1997">Krammer (1997: 177)</bibRefCitation>
;
<taxonomicName id="37984D1AFFEC0B2CFF3BF2B8FC91F80E" box="[783,999,2021,2047]" class="Bacillariophyceae" family="Naviculaceae" genus="Navicula" kingdom="Chromista" order="Naviculales" pageId="3" pageNumber="226" phylum="Ochrophyta" rank="species" species="heimansii">
<emphasis id="C2ECEA8BFFEC0B2CFF3BF2B8FC91F80E" box="[783,999,2021,2047]" italics="true" pageId="3" pageNumber="226">Navicula heimansii</emphasis>
</taxonomicName>
(1.5%)
<bibRefCitation id="94094B68FFEC0B2CF80BF2BBFAD3F80E" author="Van Dam, H. &amp; Kooyman, H." box="[1087,1445,2021,2048]" pageId="3" pageNumber="226" pagination="1 - 4" refId="ref7847" refString="Van Dam, H. &amp; Kooyman, H. (1982) A new diatom from Dutch moorland pools: Navicula heimansii (Bacillariophyceae). Acta Botanica Neerlandica 31 (1 / 2): 1 - 4." type="journal article" year="1982">Van Dam &amp; Kooyman (1982: 1)</bibRefCitation>
;
<taxonomicName id="37984D1AFFEC0B2CFCBCFD54FE2AF7D2" authorityName="M.H.Hohn &amp; Hellerman" authorityYear="1963" box="[136,348,2057,2083]" class="Bacillariophyceae" family="Achnanthaceae" genus="Achnanthes" higherTaxonomySource="GBIF" kingdom="Chromista" order="Achnanthales" pageId="3" pageNumber="226" phylum="Bacillariophyta" rank="species" species="acares">
<emphasis id="C2ECEA8BFFEC0B2CFCBCFD54FE2AF7D2" box="[136,348,2057,2083]" italics="true" pageId="3" pageNumber="226">Achnanthes acares</emphasis>
</taxonomicName>
(1%)
<bibRefCitation id="94094B68FFEC0B2CFD95FD54FC71F7D2" author="Hohn, M. H. &amp; Hellerman, J." box="[417,775,2057,2083]" pageId="3" pageNumber="226" pagination="250 - 329" refId="ref6263" refString="Hohn, M. H. &amp; Hellerman, J. (1963) The taxonomy and structure of diatom populations from three eastern North American rivers using three sampling methods. Transactions of the American Microscopical Society 82 (3): 250 - 329, 6 pls. https: // doi. org / 10.2307 / 3223932" type="journal article" year="1963">Hohn &amp; Hellerman (1963: 273)</bibRefCitation>
.
</paragraph>
</subSubSection>
</treatment>
</document>