210 lines
39 KiB
XML
210 lines
39 KiB
XML
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<mods:title id="7DCA79590442BF546C1CCC8DDB9C9AB5">Ornate Bairdiidae (Ostracoda) in 3 dimensions: exploring carapace morphology and pore canals of Triebelina van den Bold, 1946, Nodobairdia Kollmann, 1963 and Mirabairdia Kollmann, 1963</mods:title>
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<mods:namePart id="DBE05E95A1AFAB21A21D0BCF86679A6B">Forel, Marie-Béatrice</mods:namePart>
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<mods:affiliation id="2007E595B04B3F64F586B16453B543A6">Centre de Recherche en Paléontologie - Paris (CR 2 P), CNRS / MNHN / SU, Muséum national d'Histoire naturelle, CP 38, 8 rue Buffon, F- 75005 Paris (France)</mods:affiliation>
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<mods:nameIdentifier id="04DD0569A2D32034A26D6E9DE2035273" type="email">marie-beatrice.forel@mnhn.fr</mods:nameIdentifier>
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<mods:namePart id="3DFD26352964AA5C1BDD175B66769A51">Poulet-Crovisier, Nathalie</mods:namePart>
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<mods:affiliation id="39B948CCC7D680FEDF5EC497D2E5E450">Centre de Recherche en Paléontologie - Paris (CR 2 P), CNRS / MNHN / SU, Muséum national d'Histoire naturelle, CP 38, 8 rue Buffon, F- 75005 Paris (France)</mods:affiliation>
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<mods:nameIdentifier id="2D51E0787B0F84D6E7FD98998E4B3DA4" type="email">nathalie.poulet@mnhn.fr</mods:nameIdentifier>
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<mods:namePart id="3250CB620774A3CD16D74EF7888D9FD2">Korat, Lidija</mods:namePart>
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<mods:affiliation id="6661B1820BD1B944CEB84DA59970CE35">Slovenian National Building and Civil Engineering Institute, Dimičeva 12, 1000 Ljubljana (Slovenia) lidija. korat @ zag. si</mods:affiliation>
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<mods:nameIdentifier id="08D43501B8D2B5FFA29920FA0B1F8980" type="email">lidija.korat@zag.si</mods:nameIdentifier>
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<mods:namePart id="B1FB6BF5F84FA8E070B6319C05BFB501">Maddocks, Rosalie F.</mods:namePart>
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<mods:affiliation id="A69F30E4E50689E96B6258F1025FF123">Department of Earth and Atmospheric Sciences, Room 312 Science & Research Building 1, University of Houston, Houston, TX 77204 - 5007 (United States) rmaddock @ Central. UH. EDU</mods:affiliation>
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<mods:title id="A42C3340D4DC5407680CAF095506B37A">Comptes Rendus Palevol</mods:title>
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<treatment id="03C708157D52DB3B76C9FBFEFCFADF23" ID-DOI="http://doi.org/10.5281/zenodo.14232193" ID-GBIF-Taxon="247601313" ID-Zenodo-Dep="14232193" LSID="urn:lsid:plazi:treatment:03C708157D52DB3B76C9FBFEFCFADF23" httpUri="http://treatment.plazi.org/id/03C708157D52DB3B76C9FBFEFCFADF23" lastPageId="19" lastPageNumber="154" pageId="18" pageNumber="153" scope_class="Ostracoda" scope_family="Bairdiidae">
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<subSubSection id="C374EA887D52DB3A76C9FBFEFE99DF41" box="[132,357,1109,1135]" pageId="18" pageNumber="153" type="nomenclature">
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<paragraph id="8BD1B9037D52DB3A76C9FBFEFE99DF41" blockId="18.[130,776,1109,1454]" box="[132,357,1109,1135]" pageId="18" pageNumber="153">
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<smallCapsWord id="8D372FDF7D52DB3A76C9FBFEFF1FDF41" baselines="1128,1128" box="[132,227,1109,1135]" lowerCaseFontSize="8" mainFontSize="11" normCase="title" normString="Triassic" pageId="18" pageNumber="153">TRIASSIC</smallCapsWord>
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<taxonomicName id="4C6EC2807D52DB3A76A7FBFEFE99DF41" ID-CoL="84JWX" authorityName="Sars" authorityYear="1888" box="[234,357,1109,1135]" class="Ostracoda" family="Bairdiidae" kingdom="Animalia" order="Podocopida" pageId="18" pageNumber="153" phylum="Arthropoda" rank="family">
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<smallCapsWord id="8D372FDF7D52DB3A76A7FBFEFE99DF41" baselines="1128,1128" box="[234,357,1109,1135]" lowerCaseFontSize="8" mainFontSize="11" normCase="title" normString="Bairdiidae" pageId="18" pageNumber="153">BAIRDIIDAE</smallCapsWord>
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</taxonomicName>
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<paragraph id="8BD1B9037D52DB3A76C9FBDFFCFFDE82" blockId="18.[130,776,1109,1454]" pageId="18" pageNumber="153">
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The virtual cleaning of all specimens has revealed the presence of canals in different areas of the valves.In some areas, dissolution occurred and can be easily recognized as corresponding to groups of holes of different sizes underlain by disturbed sediment. The
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<specimenCount id="9D68728A7D52DB3A776EFB5EFE43DE22" box="[291,447,1268,1295]" count="2" pageId="18" pageNumber="153" type="generic">two specimens</specimenCount>
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of
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<taxonomicName id="4C6EC2807D52DB3A7790FB5EFD82DE22" authorityName="Kollmann" authorityYear="1963" box="[477,638,1268,1294]" class="Ostracoda" family="Bairdiidae" genus="Nodobairdia" kingdom="Animalia" order="Podocopida" pageId="18" pageNumber="153" phylum="Arthropoda" rank="species" species="mammillata">
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<emphasis id="B91A65117D52DB3A7790FB5EFD82DE22" box="[477,638,1268,1294]" italics="true" pageId="18" pageNumber="153">N. mammillata</emphasis>
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</taxonomicName>
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are the most significant with the most abundant pores being preserved.We recognize
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<specimenCount id="9D68728A7D52DB3A76BDFA9FFE99DE62" box="[240,357,1332,1358]" count="3" pageId="18" pageNumber="153" type="generic" typeStatus="types">three types</specimenCount>
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of pores: NPC, pustule-related pores, and marginal pores that may have carried eyelash setae. Most of them are filled with sediment that is clearly recognizable from the valve wall by its distinct contrast (
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<figureCitation id="1355A5867D52DB3A741AFA38FD09DE82" box="[599,757,1427,1454]" captionStart="FIG" captionStartId="17.[132,143,1597,1614]" captionTargetBox="[132,1455,215,1553]" captionTargetId="figure-333@17.[698,1267,787,1362]" captionTargetPageId="17" captionText="FIG. 10. — Normal pore systems in Triassic Bairdiidae Sars, 1888: A-F, Nodobairdia mammillata Kollmann, 1963: A, translucent 3D reconstruction of the adult LV (MHI 2053/1) showing the position of pores regarding micro-ornamentation with recognizable pore systems labelled from 2 to 6 and white arrows showing the position of individual scans in B, C; B, ventral coronal view; C, subdorsal coronal view; D, translucent 3D reconstruction of the RV of the complete carapace (MHI 2053/2) showing the position of pores regarding micro-ornamentation with recognizable pore systems labelled from 1’ to 6’ and white arrow showing the position of individual scans in F; E, translucent 3D reconstruction of the LV of the complete carapace showing the position of pores regarding microornamentation with recognizable pore systems labelled from 1 to 6 and white arrow showing the position of individual scans in F; F, axial view; G, translucent 3D reconstruction of Mirabairdia pernodosa Kollmann,1963 (MHI 2053/3) showing position of pore canals through the valve wall and position of pores regarding micro-ornamentation. Scale bars: 100 μm." pageId="18" pageNumber="153">Fig. 10B, C, F</figureCitation>
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).
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</paragraph>
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<paragraph id="8BD1B9037D52DB3A76C9FA78FEF2DEC1" blockId="18.[132,270,1491,1517]" box="[132,270,1491,1517]" pageId="18" pageNumber="153">
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<heading id="D0990E6F7D52DB3A76C9FA78FEF2DEC1" box="[132,270,1491,1517]" fontSize="11" level="2" pageId="18" pageNumber="153" reason="8">
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<emphasis id="B91A65117D52DB3A76C9FA78FEF2DEC1" box="[132,270,1491,1517]" italics="true" pageId="18" pageNumber="153">Normal pores</emphasis>
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</heading>
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</paragraph>
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<paragraph id="8BD1B9037D52DB3A76C9FA58FE9BDC40" blockId="18.[130,778,1523,2028]" pageId="18" pageNumber="153">
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They are spread over the surface of each valve. Three main distribution zones are recognized: in association with macro-ornamentation (nodes and ridge), in association with microornamentation on the median surface (reticulation) and through nodules. They are all straight, conical with the larger opening inside. Only a few canals cross the heaviest parts of the subdorsal and subventral ornamentation of
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<taxonomicName id="4C6EC2807D52DB3A74E9F918FF2CDDC0" authorityName="Kollmann" authorityYear="1963" class="Ostracoda" family="Bairdiidae" genus="Nodobairdia" kingdom="Animalia" order="Podocopida" pageId="18" pageNumber="153" phylum="Arthropoda" rank="species" species="mammillata">
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<emphasis id="B91A65117D52DB3A74E9F918FF2CDDC0" italics="true" pageId="18" pageNumber="153">N. mammillata</emphasis>
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</taxonomicName>
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(
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<figureCitation id="1355A5867D52DB3A76ADF979FEBFDDC1" box="[224,323,1746,1773]" captionStart="FIG" captionStartId="17.[132,143,1597,1614]" captionTargetBox="[132,1455,215,1553]" captionTargetId="figure-333@17.[698,1267,787,1362]" captionTargetPageId="17" captionText="FIG. 10. — Normal pore systems in Triassic Bairdiidae Sars, 1888: A-F, Nodobairdia mammillata Kollmann, 1963: A, translucent 3D reconstruction of the adult LV (MHI 2053/1) showing the position of pores regarding micro-ornamentation with recognizable pore systems labelled from 2 to 6 and white arrows showing the position of individual scans in B, C; B, ventral coronal view; C, subdorsal coronal view; D, translucent 3D reconstruction of the RV of the complete carapace (MHI 2053/2) showing the position of pores regarding micro-ornamentation with recognizable pore systems labelled from 1’ to 6’ and white arrow showing the position of individual scans in F; E, translucent 3D reconstruction of the LV of the complete carapace showing the position of pores regarding microornamentation with recognizable pore systems labelled from 1 to 6 and white arrow showing the position of individual scans in F; F, axial view; G, translucent 3D reconstruction of Mirabairdia pernodosa Kollmann,1963 (MHI 2053/3) showing position of pore canals through the valve wall and position of pores regarding micro-ornamentation. Scale bars: 100 μm." pageId="18" pageNumber="153">Fig. 10A</figureCitation>
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). In the largest LV, they are located in the ventro-marginal region of the two median nodes, where they are aligned and organized in a radiating pattern (
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<figureCitation id="1355A5867D52DB3A74EDF8B9FF66DC60" captionStart="FIG" captionStartId="17.[132,143,1597,1614]" captionTargetBox="[132,1455,215,1553]" captionTargetId="figure-333@17.[698,1267,787,1362]" captionTargetPageId="17" captionText="FIG. 10. — Normal pore systems in Triassic Bairdiidae Sars, 1888: A-F, Nodobairdia mammillata Kollmann, 1963: A, translucent 3D reconstruction of the adult LV (MHI 2053/1) showing the position of pores regarding micro-ornamentation with recognizable pore systems labelled from 2 to 6 and white arrows showing the position of individual scans in B, C; B, ventral coronal view; C, subdorsal coronal view; D, translucent 3D reconstruction of the RV of the complete carapace (MHI 2053/2) showing the position of pores regarding micro-ornamentation with recognizable pore systems labelled from 1’ to 6’ and white arrow showing the position of individual scans in F; E, translucent 3D reconstruction of the LV of the complete carapace showing the position of pores regarding microornamentation with recognizable pore systems labelled from 1 to 6 and white arrow showing the position of individual scans in F; F, axial view; G, translucent 3D reconstruction of Mirabairdia pernodosa Kollmann,1963 (MHI 2053/3) showing position of pore canals through the valve wall and position of pores regarding micro-ornamentation. Scale bars: 100 μm." pageId="18" pageNumber="153">Fig. 10A, C</figureCitation>
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). In the carapace, they occur at all subdorsal nodes at both valves (
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<figureCitation id="1355A5867D52DB3A7699F8F9FEA7DC40" box="[212,347,1874,1901]" captionStart="FIG" captionStartId="17.[132,143,1597,1614]" captionTargetBox="[132,1455,215,1553]" captionTargetId="figure-333@17.[698,1267,787,1362]" captionTargetPageId="17" captionText="FIG. 10. — Normal pore systems in Triassic Bairdiidae Sars, 1888: A-F, Nodobairdia mammillata Kollmann, 1963: A, translucent 3D reconstruction of the adult LV (MHI 2053/1) showing the position of pores regarding micro-ornamentation with recognizable pore systems labelled from 2 to 6 and white arrows showing the position of individual scans in B, C; B, ventral coronal view; C, subdorsal coronal view; D, translucent 3D reconstruction of the RV of the complete carapace (MHI 2053/2) showing the position of pores regarding micro-ornamentation with recognizable pore systems labelled from 1’ to 6’ and white arrow showing the position of individual scans in F; E, translucent 3D reconstruction of the LV of the complete carapace showing the position of pores regarding microornamentation with recognizable pore systems labelled from 1 to 6 and white arrow showing the position of individual scans in F; F, axial view; G, translucent 3D reconstruction of Mirabairdia pernodosa Kollmann,1963 (MHI 2053/3) showing position of pore canals through the valve wall and position of pores regarding micro-ornamentation. Scale bars: 100 μm." pageId="18" pageNumber="153">Fig. 10D, E</figureCitation>
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).
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</paragraph>
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<paragraph id="8BD1B9037D52DB3A76D6F8D9FA92DEC1" blockId="18.[130,778,1523,2028]" lastBlockId="18.[811,1457,1109,1868]" pageId="18" pageNumber="153">
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Pore canals associated with subdorsal nodes are labelled from 1 to 6 at LV and 1’ to 6’ at RV, all being in recognizable positions regarding nodes (
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<figureCitation id="1355A5867D52DB3A77D6F819FDC8DCE0" box="[411,564,1970,1996]" captionStart="FIG" captionStartId="17.[132,143,1597,1614]" captionTargetBox="[132,1455,215,1553]" captionTargetId="figure-333@17.[698,1267,787,1362]" captionTargetPageId="17" captionText="FIG. 10. — Normal pore systems in Triassic Bairdiidae Sars, 1888: A-F, Nodobairdia mammillata Kollmann, 1963: A, translucent 3D reconstruction of the adult LV (MHI 2053/1) showing the position of pores regarding micro-ornamentation with recognizable pore systems labelled from 2 to 6 and white arrows showing the position of individual scans in B, C; B, ventral coronal view; C, subdorsal coronal view; D, translucent 3D reconstruction of the RV of the complete carapace (MHI 2053/2) showing the position of pores regarding micro-ornamentation with recognizable pore systems labelled from 1’ to 6’ and white arrow showing the position of individual scans in F; E, translucent 3D reconstruction of the LV of the complete carapace showing the position of pores regarding microornamentation with recognizable pore systems labelled from 1 to 6 and white arrow showing the position of individual scans in F; F, axial view; G, translucent 3D reconstruction of Mirabairdia pernodosa Kollmann,1963 (MHI 2053/3) showing position of pore canals through the valve wall and position of pores regarding micro-ornamentation. Scale bars: 100 μm." pageId="18" pageNumber="153">Fig. 10A, D, E</figureCitation>
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). The smallest specimen lacks the systems 3/3’ and 5/5’, possibly indicating that they may appear later in the ontogeny of the species. Among the few works that discussed pores in
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<taxonomicName id="4C6EC2807D52DB3A728FFBDFFC8BDF83" authority=", Maddocks (2013)" authorityName=", Maddocks" authorityYear="2013" class="Ostracoda" family="Bairdiidae" kingdom="Animalia" order="Podocopida" pageId="18" pageNumber="153" phylum="Arthropoda" rank="family">
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Bairdiidae,
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<bibRefCitation id="EFFFC4F27D52DB3A7372FBDFFC8BDF83" author="MADDOCKS R. F." pageId="18" pageNumber="153" pagination="457 - 510" refId="ref12967" refString="MADDOCKS R. F. 2013. - New and poorly known species of Neonesidea (Bairdiidae, Ostracoda, Crustacea) from French Frigate Shoals, the Hawaiian Islands. Zootaxa 3608 (6): 457 - 510. https: // doi. org / 10.11646 / zootaxa. 3608.6.3" type="journal article" year="2013">Maddocks (2013)</bibRefCitation>
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</taxonomicName>
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mentions that pores of different sizes occur in adults, the largest being those that appeared earlier in the development of the species. In the present case, pore systems 4, 5 and
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the adult LV (
|
||
<figureCitation id="1355A5867D52DB3A75B9FB5FFBAFDE22" box="[1012,1107,1268,1294]" captionStart="FIG" captionStartId="17.[132,143,1597,1614]" captionTargetBox="[132,1455,215,1553]" captionTargetId="figure-333@17.[698,1267,787,1362]" captionTargetPageId="17" captionText="FIG. 10. — Normal pore systems in Triassic Bairdiidae Sars, 1888: A-F, Nodobairdia mammillata Kollmann, 1963: A, translucent 3D reconstruction of the adult LV (MHI 2053/1) showing the position of pores regarding micro-ornamentation with recognizable pore systems labelled from 2 to 6 and white arrows showing the position of individual scans in B, C; B, ventral coronal view; C, subdorsal coronal view; D, translucent 3D reconstruction of the RV of the complete carapace (MHI 2053/2) showing the position of pores regarding micro-ornamentation with recognizable pore systems labelled from 1’ to 6’ and white arrow showing the position of individual scans in F; E, translucent 3D reconstruction of the LV of the complete carapace showing the position of pores regarding microornamentation with recognizable pore systems labelled from 1 to 6 and white arrow showing the position of individual scans in F; F, axial view; G, translucent 3D reconstruction of Mirabairdia pernodosa Kollmann,1963 (MHI 2053/3) showing position of pore canals through the valve wall and position of pores regarding micro-ornamentation. Scale bars: 100 μm." pageId="18" pageNumber="153">Fig. 10A</figureCitation>
|
||
) are large and roughly similar in size. Additional tiny structures are visible within the subdorsal nodes but the resolution hampers on the determination of their nature. Specimens of
|
||
<taxonomicName id="4C6EC2807D52DB3A7235FAFEFAE1DE42" authorityName="Kollmann" authorityYear="1963" box="[1144,1309,1364,1390]" class="Ostracoda" family="Bairdiidae" genus="Nodobairdia" kingdom="Animalia" order="Podocopida" pageId="18" pageNumber="153" phylum="Arthropoda" rank="species" species="mammillata">
|
||
<emphasis id="B91A65117D52DB3A7235FAFEFAE1DE42" box="[1144,1309,1364,1390]" italics="true" pageId="18" pageNumber="153">N. mammillata</emphasis>
|
||
</taxonomicName>
|
||
illustrated in
|
||
<bibRefCitation id="EFFFC4F27D52DB3A7563FADFFBBEDEA2" author="KRISTAN-TOLLMANN E." box="[814,1090,1396,1422]" pageId="18" pageNumber="153" pagination="77 - 104" refId="ref12531" refString="KRISTAN-TOLLMANN E. 1978. - Bairdiidae (Ostracoda) aus den obertriadischen Cassianer Schichten der Ruones-Wiesen bei Corvara in Sudtirol. Schriftenreihe der Erdwissenschaftlichen Kommissionen, Osterreichische Akademie der Wissenschaften 4: 77 - 104 (in German)." type="journal article" year="1978">Kristan-Tollmann (1978)</bibRefCitation>
|
||
show unrimmed pores of
|
||
<typeStatus id="54D507A17D52DB3A732EFADFFA6DDEA2" box="[1379,1425,1396,1422]" pageId="18" pageNumber="153">type</typeStatus>
|
||
A’ located between the subdorsal nodes (
|
||
<figureCitation id="1355A5867D52DB3A728CFA38FAE7DE82" box="[1217,1307,1427,1454]" captionStart="FIG" captionStartId="6.[132,143,1827,1844]" captionTargetBox="[252,1380,201,1805]" captionTargetId="figure-318@6.[388,957,956,1503]" captionTargetPageId="6" captionText="FIG. 1. — Summary of pores in Bairdiidae published in the literature: A, A’ pore in the Pennsylvanian species Bairdia sp. from Oklahoma (Puri & Dickau 1969: pl. 6, fig. 4); B, A’ pore in Neonesidea obscura (Müller, 1894) (Puri & Dickau 1969: pl. 3, fig. 3); C, A’ pore in Glyptobairdia coronata (Brady, 1870) (Puri & Dickau 1969: pl. 6, fig. 3b); D, A” pore in Bythocypris bosquetiana (Brady, 1866) (Puri & Dickau 1969: pl. 2, fig. 2); E, A” pore in Triebelina? pustulata Keij, 1974 (Maddocks & Wouters 1990: fig. 19); F, A’ pore in Triebelina? pustulata Keij, 1974 (Maddocks & Wouters 1990: fig. 18); G, A’ pore in Havanardia havanensis Pokorný, 1968 (Malz & Lord 1988: pl. 3, fig. 6c); H, A’ pore in Paranesidea? confusa Titterton & Whatley, 1988 (Titterton & Whatley 1988: pl. 5, fig. 7); I, J, A’ pores in Triebelina sertata Triebel, 1948 (I, Titterton & Whatley 1988: pl. 9, fig. 14; J, Titterton & Whatley 1988: pl. 9, fig. 6); K, A’? pore in Mydionobairdia schyroconcha (Maddocks, 1969) (Titterton & Whatley 1988: pl. 9, fig. 17); L, A’ and A” pores in Mydionobairdia schyroconcha (Maddocks, 1969) (Krutak 1982: pl. 7, fig. 2); M, A”? pores in Nodobairdia mammillata Kollmann, 1963 from the Carnian, Late Triassic, of Italy (Kristan-Tollmann 1978: pl. 8, fig. 4); N, A’ pores in Margarobairdia margaritifera Kristan-Tollmann, 1978 from the Carnian, Late Triassic, of Italy (Kristan-Tollmann 1978: pl. 5, fig. 4). No scale bar." pageId="18" pageNumber="153">Fig. 1M</figureCitation>
|
||
). These structures are not observed in any of the
|
||
<specimenCount id="9D68728A7D52DB3A72F9FA1FFAAEDEE1" box="[1204,1362,1459,1486]" count="2" pageId="18" pageNumber="153" type="generic">two specimens</specimenCount>
|
||
studied, most likely because of preservation and/or resolution.
|
||
</paragraph>
|
||
<paragraph id="8BD1B9037D52DB3A750EFA5FFB31DC60" blockId="18.[811,1457,1109,1868]" pageId="18" pageNumber="153">
|
||
In
|
||
<taxonomicName id="4C6EC2807D52DB3A752DFA5FFC02DD21" authorityName="Kollmann" authorityYear="1963" box="[864,1022,1523,1549]" class="Ostracoda" family="Bairdiidae" genus="Nodobairdia" kingdom="Animalia" order="Podocopida" pageId="18" pageNumber="153" phylum="Arthropoda" rank="species" species="mammillata">
|
||
<emphasis id="B91A65117D52DB3A752DFA5FFC02DD21" box="[864,1022,1523,1549]" italics="true" pageId="18" pageNumber="153">N. mammillata</emphasis>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C6EC2807D52DB3A7263FA5FFB44DD21" authorityName="Kollmann" authorityYear="1963" box="[1070,1208,1523,1549]" class="Ostracoda" family="Bairdiidae" genus="Mirabairdia" kingdom="Animalia" order="Podocopida" pageId="18" pageNumber="153" phylum="Arthropoda" rank="species" species="pernodosa">
|
||
<emphasis id="B91A65117D52DB3A7263FA5FFB44DD21" box="[1070,1208,1523,1549]" italics="true" pageId="18" pageNumber="153">M. pernodosa</emphasis>
|
||
</taxonomicName>
|
||
, pores are more densely seen in association with reticulation in the median area (
|
||
<figureCitation id="1355A5867D52DB3A757BF998FC04DD61" box="[822,1016,1587,1614]" captionStart="FIG" captionStartId="17.[132,143,1597,1614]" captionTargetBox="[132,1455,215,1553]" captionTargetId="figure-333@17.[698,1267,787,1362]" captionTargetPageId="17" captionText="FIG. 10. — Normal pore systems in Triassic Bairdiidae Sars, 1888: A-F, Nodobairdia mammillata Kollmann, 1963: A, translucent 3D reconstruction of the adult LV (MHI 2053/1) showing the position of pores regarding micro-ornamentation with recognizable pore systems labelled from 2 to 6 and white arrows showing the position of individual scans in B, C; B, ventral coronal view; C, subdorsal coronal view; D, translucent 3D reconstruction of the RV of the complete carapace (MHI 2053/2) showing the position of pores regarding micro-ornamentation with recognizable pore systems labelled from 1’ to 6’ and white arrow showing the position of individual scans in F; E, translucent 3D reconstruction of the LV of the complete carapace showing the position of pores regarding microornamentation with recognizable pore systems labelled from 1 to 6 and white arrow showing the position of individual scans in F; F, axial view; G, translucent 3D reconstruction of Mirabairdia pernodosa Kollmann,1963 (MHI 2053/3) showing position of pore canals through the valve wall and position of pores regarding micro-ornamentation. Scale bars: 100 μm." pageId="18" pageNumber="153">Fig. 10A, D, E, G</figureCitation>
|
||
). This pattern differs from what has been observed in
|
||
<taxonomicName id="4C6EC2807D52DB3A75FEF9F8FBE1DD41" authorityName="van den Bold" authorityYear="1946" box="[947,1053,1619,1645]" class="Ostracoda" family="Bairdiidae" genus="Triebelina" kingdom="Animalia" order="Podocopida" pageId="18" pageNumber="153" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B91A65117D52DB3A75FEF9F8FBE1DD41" box="[947,1053,1619,1645]" italics="true" pageId="18" pageNumber="153">Triebelina</emphasis>
|
||
</taxonomicName>
|
||
where pores appear less abundant in this area. However, in the three Triassic specimens studied, the pores appear to be intrasolar, which probably means that the supposed sola are compound with poorly developed second-order muri within.
|
||
<taxonomicName id="4C6EC2807D52DB3A7267F978FB49DDC0" authorityName="Kollmann" authorityYear="1963" box="[1066,1205,1746,1772]" class="Ostracoda" family="Bairdiidae" genus="Mirabairdia" kingdom="Animalia" order="Podocopida" pageId="18" pageNumber="153" phylum="Arthropoda" rank="species" species="pernodosa">
|
||
<emphasis id="B91A65117D52DB3A7267F978FB49DDC0" box="[1066,1205,1746,1772]" italics="true" pageId="18" pageNumber="153">M. pernodosa</emphasis>
|
||
</taxonomicName>
|
||
displays one pore canal going through a nodule (
|
||
<figureCitation id="1355A5867D52DB3A720DF959FB59DC20" box="[1088,1189,1778,1804]" captionStart="FIG" captionStartId="17.[132,143,1597,1614]" captionTargetBox="[132,1455,215,1553]" captionTargetId="figure-333@17.[698,1267,787,1362]" captionTargetPageId="17" captionText="FIG. 10. — Normal pore systems in Triassic Bairdiidae Sars, 1888: A-F, Nodobairdia mammillata Kollmann, 1963: A, translucent 3D reconstruction of the adult LV (MHI 2053/1) showing the position of pores regarding micro-ornamentation with recognizable pore systems labelled from 2 to 6 and white arrows showing the position of individual scans in B, C; B, ventral coronal view; C, subdorsal coronal view; D, translucent 3D reconstruction of the RV of the complete carapace (MHI 2053/2) showing the position of pores regarding micro-ornamentation with recognizable pore systems labelled from 1’ to 6’ and white arrow showing the position of individual scans in F; E, translucent 3D reconstruction of the LV of the complete carapace showing the position of pores regarding microornamentation with recognizable pore systems labelled from 1 to 6 and white arrow showing the position of individual scans in F; F, axial view; G, translucent 3D reconstruction of Mirabairdia pernodosa Kollmann,1963 (MHI 2053/3) showing position of pore canals through the valve wall and position of pores regarding micro-ornamentation. Scale bars: 100 μm." pageId="18" pageNumber="153">Fig. 10G</figureCitation>
|
||
). The study of complete and better preserved
|
||
<taxonomicName id="4C6EC2807D52DB3A724AF8B9FB74DC00" authorityName="Kollmann" authorityYear="1963" box="[1031,1160,1810,1836]" class="Ostracoda" family="Bairdiidae" genus="Mirabairdia" kingdom="Animalia" order="Podocopida" pageId="18" pageNumber="153" phylum="Arthropoda" rank="genus">
|
||
<emphasis id="B91A65117D52DB3A724AF8B9FB74DC00" box="[1031,1160,1810,1836]" italics="true" pageId="18" pageNumber="153">Mirabairdia</emphasis>
|
||
</taxonomicName>
|
||
specimens will be necessary for further discussion and comparison.
|
||
</paragraph>
|
||
<paragraph id="8BD1B9037D52DB3A7560F8D9FC41DCA0" blockId="18.[813,957,1906,1932]" box="[813,957,1906,1932]" pageId="18" pageNumber="153">
|
||
<heading id="D0990E6F7D52DB3A7560F8D9FC41DCA0" box="[813,957,1906,1932]" fontSize="11" level="2" pageId="18" pageNumber="153" reason="8">
|
||
<emphasis id="B91A65117D52DB3A7560F8D9FC41DCA0" box="[813,957,1906,1932]" italics="true" pageId="18" pageNumber="153">Nodular pores</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="8BD1B9037D52DB3B7560F839FE43D9FC" blockId="18.[813,1456,1938,2028]" lastBlockId="19.[130,777,216,721]" lastPageId="19" lastPageNumber="154" pageId="18" pageNumber="153">
|
||
The lateral surface of
|
||
<taxonomicName id="4C6EC2807D52DB3A7246F838FB50DC80" authorityName="Kollmann" authorityYear="1963" box="[1035,1196,1938,1964]" class="Ostracoda" family="Bairdiidae" genus="Nodobairdia" kingdom="Animalia" order="Podocopida" pageId="18" pageNumber="153" phylum="Arthropoda" rank="species" species="mammillata">
|
||
<emphasis id="B91A65117D52DB3A7246F838FB50DC80" box="[1035,1196,1938,1964]" italics="true" pageId="18" pageNumber="153">N. mammillata</emphasis>
|
||
</taxonomicName>
|
||
displays at least 14 nodules in a symmetrical pattern between RV and LV (Fig. 7). The 3D tomography reveals that these nodules are actually hollow and penetrated by tiny pore canals that can only be fully studied with higher resolution scans (Fig. 8H, I). They can easily be recognized in several of the published specimens, for instance in
|
||
<bibRefCitation id="EFFFC4F27D53DB3B777EFE9CFD37DA7E" author="DEPECHE F. & CRASQUIN-SOLEAU S." box="[307,715,311,338]" pageId="19" pageNumber="154" pagination="453 - 462" refId="ref10890" refString="DEPECHE F. & CRASQUIN-SOLEAU S. 1992. - Triassic marine ostracodes of the Australian margin (Holes 759 B, 760 B, 761 C, 764 A and 764 B). Proceedings of the Ocean Drilling Program, Scientific Results 122: 453 - 462. https: // doi. org / 10.2973 / odp. proc. sr. 122.177.1992" type="journal article" year="1992">Dépêche & Crasquin-Soleau (1992)</bibRefCitation>
|
||
. It is uncertain whether the pores illustrated byKristan-Tollmann (1978) from the Carnian of
|
||
<collectingCountry id="F379F9937D53DB3B778CFEDCFE0DDABD" box="[449,497,375,401]" name="Italy" pageId="19" pageNumber="154">Italy</collectingCountry>
|
||
(
|
||
<figureCitation id="1355A5867D53DB3B744EFEDCFDA2DABD" box="[515,606,375,401]" captionStart="FIG" captionStartId="6.[132,143,1827,1844]" captionTargetBox="[252,1380,201,1805]" captionTargetId="figure-318@6.[388,957,956,1503]" captionTargetPageId="6" captionText="FIG. 1. — Summary of pores in Bairdiidae published in the literature: A, A’ pore in the Pennsylvanian species Bairdia sp. from Oklahoma (Puri & Dickau 1969: pl. 6, fig. 4); B, A’ pore in Neonesidea obscura (Müller, 1894) (Puri & Dickau 1969: pl. 3, fig. 3); C, A’ pore in Glyptobairdia coronata (Brady, 1870) (Puri & Dickau 1969: pl. 6, fig. 3b); D, A” pore in Bythocypris bosquetiana (Brady, 1866) (Puri & Dickau 1969: pl. 2, fig. 2); E, A” pore in Triebelina? pustulata Keij, 1974 (Maddocks & Wouters 1990: fig. 19); F, A’ pore in Triebelina? pustulata Keij, 1974 (Maddocks & Wouters 1990: fig. 18); G, A’ pore in Havanardia havanensis Pokorný, 1968 (Malz & Lord 1988: pl. 3, fig. 6c); H, A’ pore in Paranesidea? confusa Titterton & Whatley, 1988 (Titterton & Whatley 1988: pl. 5, fig. 7); I, J, A’ pores in Triebelina sertata Triebel, 1948 (I, Titterton & Whatley 1988: pl. 9, fig. 14; J, Titterton & Whatley 1988: pl. 9, fig. 6); K, A’? pore in Mydionobairdia schyroconcha (Maddocks, 1969) (Titterton & Whatley 1988: pl. 9, fig. 17); L, A’ and A” pores in Mydionobairdia schyroconcha (Maddocks, 1969) (Krutak 1982: pl. 7, fig. 2); M, A”? pores in Nodobairdia mammillata Kollmann, 1963 from the Carnian, Late Triassic, of Italy (Kristan-Tollmann 1978: pl. 8, fig. 4); N, A’ pores in Margarobairdia margaritifera Kristan-Tollmann, 1978 from the Carnian, Late Triassic, of Italy (Kristan-Tollmann 1978: pl. 5, fig. 4). No scale bar." pageId="19" pageNumber="154">Fig. 1M</figureCitation>
|
||
) correspond to these nodular pores; she illustrated such pores at the base of the two median subdorsal nodes, where they are not seen in the present analysis. This disparity needs to be verified with high resolution investigation of well-preserved specimens. The level of significance of this pattern for
|
||
<taxonomicName id="4C6EC2807D53DB3B747FFDBCFD2AD91D" authorityName="Kollmann" authorityYear="1963" box="[562,726,535,561]" class="Ostracoda" family="Bairdiidae" genus="Nodobairdia" kingdom="Animalia" order="Podocopida" pageId="19" pageNumber="154" phylum="Arthropoda" rank="species" species="mammillata">
|
||
<emphasis id="B91A65117D53DB3B747FFDBCFD2AD91D" box="[562,726,535,561]" italics="true" pageId="19" pageNumber="154">N. mammillata</emphasis>
|
||
</taxonomicName>
|
||
also remains to be investigated. Other species such as
|
||
<taxonomicName id="4C6EC2807D53DB3B74CFFD9DFE5ED95C" authority="Kollmann, 1963" authorityName="Kollmann" authorityYear="1963" class="Ostracoda" family="Bairdiidae" genus="Nodobairdia" kingdom="Animalia" order="Podocopida" pageId="19" pageNumber="154" phylum="Arthropoda" rank="species" species="verrucosa">
|
||
<emphasis id="B91A65117D53DB3B74CFFD9DFF18D95C" italics="true" pageId="19" pageNumber="154">Nodobairdia verrucosa</emphasis>
|
||
<bibRefCitation id="EFFFC4F27D53DB3B76A0FDFDFE5ED95C" author="KOLLMANN K." box="[237,418,598,624]" pageId="19" pageNumber="154" pagination="121 - 203" refId="ref12250" refString="KOLLMANN K. 1963. - Ostracoden aus der alpinen Trias. II. Weitere Bairdiidae. Jahrbuch der Geologischen Bundesanstalt 106: 121 - 203 (in German)." type="journal article" year="1963">Kollmann, 1963</bibRefCitation>
|
||
</taxonomicName>
|
||
seem to also display such structures, but until
|
||
<typeStatus id="54D507A17D53DB3B7762FDDCFEA1D9BD" box="[303,349,631,657]" pageId="19" pageNumber="154">type</typeStatus>
|
||
specimens are re-analysed, it is hard to determine whether the pattern of nodular pores is of specific or supra-specific significance.
|
||
</paragraph>
|
||
<paragraph id="8BD1B9037D53DB3B76C9FD5DFEE3D83C" blockId="19.[132,287,758,784]" box="[132,287,758,784]" pageId="19" pageNumber="154">
|
||
<heading id="D0990E6F7D53DB3B76C9FD5DFEE3D83C" box="[132,287,758,784]" fontSize="11" level="2" pageId="19" pageNumber="154" reason="8">
|
||
<emphasis id="B91A65117D53DB3B76C9FD5DFEE3D83C" box="[132,287,758,784]" italics="true" pageId="19" pageNumber="154">Marginal pores</emphasis>
|
||
</heading>
|
||
</paragraph>
|
||
<paragraph id="8BD1B9037D53DB3B76C9FCBDFCFADF23" blockId="19.[130,778,790,1039]" pageId="19" pageNumber="154">
|
||
The largest LV of
|
||
<taxonomicName id="4C6EC2807D53DB3B7708FCBCFE14D81C" authorityName="Kollmann" authorityYear="1963" box="[325,488,790,816]" class="Ostracoda" family="Bairdiidae" genus="Nodobairdia" kingdom="Animalia" order="Podocopida" pageId="19" pageNumber="154" phylum="Arthropoda" rank="species" species="mammillata">
|
||
<emphasis id="B91A65117D53DB3B7708FCBCFE14D81C" box="[325,488,790,816]" italics="true" pageId="19" pageNumber="154">N. mammillata</emphasis>
|
||
</taxonomicName>
|
||
displays a series of narrow canals aligned along the anteroventral margin (
|
||
<figureCitation id="1355A5867D53DB3B7421FC9DFD4AD87C" box="[620,694,822,848]" captionStart="FIG" captionStartId="18.[133,143,996,1013]" captionTargetBox="[132,1455,215,954]" captionTargetId="figure-646@18.[792,1448,234,743]" captionTargetPageId="18" captionText="FIG. 11. — Individual scans showing eyelash pores in the LV of Nodobairdia mammillata Kollmann, 1963 (MHI 2053/1): A, sagittal section with blue box showing enlarged ventral margin and red dotted lines indicating the position of scans in B-E; B-D, successive coronal sections; E, axial section. Scale bar: 100 μm." pageId="19" pageNumber="154">Fig. 11</figureCitation>
|
||
). These structures are elongate in coronal view and small round cavities in axial view. They cannot be tracked along their entire length through the valve thickness because of their small diameter that is close to the resolution limit of the CT-scan. However, their position perpendicular to the valve margin and their regularly spaced disposition reminds radial pore canals.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |