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<document id="D333FAE119BDE6A48B62C74DE0C7DB95" ID-DOI="10.11646/phytotaxa.591.3.3" ID-ISSN="1179-3163" ID-Zenodo-Dep="7800839" IM.bibliography_approvedBy="valdenar" IM.illustrations_approvedBy="valdenar" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_approvedBy="valdenar" IM.taxonomicNames_approvedBy="felipe" checkinTime="1680676677657" checkinUser="plazi" docAuthor="Williams, David M. &amp; Sims, Pat A." docDate="2023" docId="03848783FFBFFF97DEB88AA6FB64008D" docLanguage="en" docName="phytotaxa.591.3.3.pdf" docOrigin="Phytotaxa 591 (3)" docSource="http://dx.doi.org/10.11646/phytotaxa.591.3.3" docStyle="DocumentStyle:96748F8F1B6C902996E134952A3A36B9.7:Phytotaxa.2014-.journal_article" docStyleId="96748F8F1B6C902996E134952A3A36B9" docStyleName="Phytotaxa.2014-.journal_article" docStyleVersion="7" docTitle="Longinata acuta Hajos" docType="treatment" docVersion="5" lastPageNumber="213" masterDocId="FFBDFFFBFFBEFF93DE308D7AFFB7015E" masterDocTitle="The diatom genus Longinata Hajós (Bacillariophyta): structure, relationships and distribution" masterLastPageNumber="219" masterPageNumber="209" pageNumber="210" updateTime="1699481553144" updateUser="plazi" zenodo-license-figures="UNSPECIFIED" zenodo-license-treatments="UNSPECIFIED">
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<mods:title id="F6571B15F5F4740F05416749A8452434">The diatom genus Longinata Hajós (Bacillariophyta): structure, relationships and distribution</mods:title>
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<mods:affiliation id="BB515122436B1C8110405D1857181E26">p. sims @ nhm. ac. uk; https: // orcid. org / 0000 - 0002 - 0214 - 8303</mods:affiliation>
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<treatment id="03848783FFBFFF97DEB88AA6FB64008D" ID-DOI="http://doi.org/10.5281/zenodo.7813526" ID-Zenodo-Dep="7813526" LSID="urn:lsid:plazi:treatment:03848783FFBFFF97DEB88AA6FB64008D" httpUri="http://treatment.plazi.org/id/03848783FFBFFF97DEB88AA6FB64008D" lastPageId="4" lastPageNumber="213" pageId="1" pageNumber="210">
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<paragraph id="8B923695FFBFFF92DEB88AA6FF440944" blockId="1.[136,1451,2011,2074]" pageId="1" pageNumber="210">
<heading id="D0DA81F9FFBFFF92DEB88AA6FF440944" bold="true" centered="true" fontSize="11" level="1" pageId="1" pageNumber="210" reason="1">
<treatmentCitationGroup id="AB3D11BBFFBFFF92DEB88AA6FF440944" pageId="1" pageNumber="210">
<emphasis id="B959EA87FFBFFF92DEB88AA6FF440944" bold="true" pageId="1" pageNumber="210">
<taxonomicName id="4C2D4D16FFBFFF92DEB88AA6FE2C06A8" authority="Hajos" authorityName="Hajos" box="[136,411,2011,2038]" class="Bacillariophyceae" genus="Longinata" higherTaxonomySource="GBIF" kingdom="Chromista" pageId="1" pageNumber="210" phylum="Ochrophyta" rank="species" species="acuta">
<emphasis id="B959EA87FFBFFF92DEB88AA6FEFC06A8" bold="true" box="[136,331,2012,2038]" italics="true" pageId="1" pageNumber="210">Longinata acuta</emphasis>
Hajós
</taxonomicName>
in
<treatmentCitation id="0A8C1084FFBFFF92DFF88AA1FC9F06A8" author="Hajos, M. &amp; Stradner, H." box="[456,808,2011,2038]" page="935" pageId="1" pageNumber="210" year="1975">
<bibRefCitation id="EFBC4B64FFBFFF92DFF88AA1FC9F06A8" author="Hajos, M. &amp; Stradner, H." box="[456,808,2011,2038]" pageId="1" pageNumber="210" pagination="913 - 1009" refId="ref5786" refString="Hajos, M. &amp; Stradner, H. (1975) Late Cretaceous Archaeomonadaceae, Diatomaceae, and Silicoflagellatae from the South Pacific Ocean, Deep Sea Drilling Project, Leg 29, Site 275. Initial Reports of the Deep Sea Drilling Project 29: 913 - 1009. https: // doi. org / 10.2973 / dsdp. proc. 29.126.1975" type="journal article" year="1975">Hajós &amp; Stradner 1975: 935</bibRefCitation>
</treatmentCitation>
, pl. 13, fig. 12 (=
<figureCitation id="13162A10FFBFFF92DA3C8AA6FBC306A8" box="[1036,1140,2012,2038]" captionStart="FIGURES 111" captionStartId="1.[136,248,1498,1520]" captionTargetBox="[216,1372,242,1471]" captionTargetId="figure-30@1.[216,1372,242,1471]" captionTargetPageId="1" captionText="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" figureDoi="http://doi.org/10.5281/zenodo.7800843" httpUri="https://zenodo.org/record/7800843/files/figure.png" pageId="1" pageNumber="210">Figure 5</figureCitation>
) emend D.M.Williams &amp; P.A.Sims
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<caption id="DF52661DFFBCFF91DEB88A03FF7906A5" ID-DOI="http://doi.org/10.5281/zenodo.7800845" ID-Zenodo-Dep="7800845" httpUri="https://zenodo.org/record/7800845/files/figure.png" pageId="2" pageNumber="211" startId="2.[136,248,1913,1935]" targetBox="[308,1278,190,1889]" targetPageId="2">
<paragraph id="8B923695FFBCFF91DEB88A03FE5B06D1" blockId="2.[136,1451,1913,2043]" box="[136,492,1913,1935]" pageId="2" pageNumber="211">
<emphasis id="B959EA87FFBCFF91DEB88A03FE5B06D1" bold="true" box="[136,492,1913,1935]" pageId="2" pageNumber="211">
FIGURES 1214:
<taxonomicName id="4C2D4D16FFBCFF91DF798A03FE5B06D1" box="[329,492,1913,1935]" class="Bacillariophyceae" genus="Longinata" higherTaxonomySource="GBIF" kingdom="Chromista" pageId="2" pageNumber="211" phylum="Ochrophyta" rank="species" species="acuta">
<emphasis id="B959EA87FFBCFF91DF798A03FE5B06D1" bold="true" box="[329,492,1913,1935]" italics="true" pageId="2" pageNumber="211">Longinata acuta</emphasis>
</taxonomicName>
</emphasis>
</paragraph>
<paragraph id="8B923695FFBCFF91DEB88AE4FF7906A5" blockId="2.[136,1451,1913,2043]" pageId="2" pageNumber="211">SEM, Fig. 12, pair of valves with peg arrowed, shorter projections with plain arrow, adjoining pegs with hashed arrows; Fig. 13, external view with scattered pores on surface, rimoportula arrowed; Fig. 14, paired valves at poles, pore-field-like structure, arrowed. Scale bars = 5μm.</paragraph>
</caption>
<caption id="DF52661DFFBDFF90DEB888EFFA3C04AC" ID-DOI="http://doi.org/10.5281/zenodo.7800847" ID-Zenodo-Dep="7800847" httpUri="https://zenodo.org/record/7800847/files/figure.png" pageId="3" pageNumber="212" startId="3.[136,248,1429,1451]" targetBox="[340,1247,190,1405]" targetPageId="3">
<paragraph id="8B923695FFBDFF90DEB888EFFE5B04F4" blockId="3.[136,1451,1429,1523]" box="[136,492,1429,1451]" pageId="3" pageNumber="212">
<emphasis id="B959EA87FFBDFF90DEB888EFFE5B04F4" bold="true" box="[136,492,1429,1451]" pageId="3" pageNumber="212">
FIGURES 1518:
<taxonomicName id="4C2D4D16FFBDFF90DF7988EFFE5B04F4" box="[329,492,1429,1450]" class="Bacillariophyceae" genus="Longinata" higherTaxonomySource="GBIF" kingdom="Chromista" pageId="3" pageNumber="212" phylum="Ochrophyta" rank="species" species="acuta">
<emphasis id="B959EA87FFBDFF90DF7988EFFE5B04F4" bold="true" box="[329,492,1429,1450]" italics="true" pageId="3" pageNumber="212">Longinata acuta</emphasis>
</taxonomicName>
</emphasis>
</paragraph>
<paragraph id="8B923695FFBDFF90DEB888C3FA3C04AC" blockId="3.[136,1451,1429,1523]" pageId="3" pageNumber="212">SEM, Fig. 15, pair of whole valves; Fig. 16, detail from specimen in Fig. 15, showing rimoportula (arrow) and sparse poroids; Fig. 17, detail showing rimoportula (arrow) and pegs (double-headed arrow). Scale bars = 20μm (Fig. 15), 5μm (Fig. 16, 18), 2μm (Fig. 17).</paragraph>
</caption>
<subSubSection id="C337651EFFBDFF97DE8D8B5BFB64008D" lastPageId="4" lastPageNumber="213" pageId="3" pageNumber="212" type="materials_examined">
<paragraph id="8B923695FFBDFF90DE8D8B5BFBCB07DF" blockId="3.[136,1452,1568,2088]" pageId="3" pageNumber="212">
<typeStatus id="54968837FFBDFF90DE8D8B5BFE9F0765" box="[189,296,1569,1595]" pageId="3" pageNumber="212" type="holotype">Holotype</typeStatus>
:—
<collectingCountry id="F33A7605FFBDFF90DF798B5BFE460765" box="[329,497,1569,1595]" name="New Zealand" pageId="3" pageNumber="212">NEW ZEALAND</collectingCountry>
, Campbell Plateau, South Pacific (
<bibRefCitation id="EFBC4B64FFBDFF90DDB08B5BFB390765" author="Hajos, M. &amp; Stradner, H." box="[896,1166,1568,1595]" pageId="3" pageNumber="212" pagination="913 - 1009" refId="ref5786" refString="Hajos, M. &amp; Stradner, H. (1975) Late Cretaceous Archaeomonadaceae, Diatomaceae, and Silicoflagellatae from the South Pacific Ocean, Deep Sea Drilling Project, Leg 29, Site 275. Initial Reports of the Deep Sea Drilling Project 29: 913 - 1009. https: // doi. org / 10.2973 / dsdp. proc. 29.126.1975" type="journal article" year="1975">Hajós &amp; Stradner 1975</bibRefCitation>
: fig. 1), “
<collectionCode id="ED3CAE50FFBDFF90DB328B5BFAFC0765" box="[1282,1355,1569,1595]" pageId="3" pageNumber="212">DSDP</collectionCode>
Leg 29, Sample 275-1-2,
<quantity id="4CD59B70FFBDFF90DF7A8B3EFE020700" box="[330,437,1604,1630]" metricMagnitude="-1" metricUnit="m" metricValue="4.1" metricValueMax="4.2" metricValueMin="4.0" pageId="3" pageNumber="212" unit="cm" value="41.0" valueMax="42.0" valueMin="40.0">40-42 cm</quantity>
[…] Upper Cretaceous” (
<bibRefCitation id="EFBC4B64FFBDFF90DCE88B3EFBAC0701" author="Hajos, M. &amp; Stradner, H." box="[728,1051,1604,1631]" pageId="3" pageNumber="212" pagination="913 - 1009" refId="ref5786" refString="Hajos, M. &amp; Stradner, H. (1975) Late Cretaceous Archaeomonadaceae, Diatomaceae, and Silicoflagellatae from the South Pacific Ocean, Deep Sea Drilling Project, Leg 29, Site 275. Initial Reports of the Deep Sea Drilling Project 29: 913 - 1009. https: // doi. org / 10.2973 / dsdp. proc. 29.126.1975" type="journal article" year="1975">Hajós &amp; Stradner 1975: 935</bibRefCitation>
),
<typeStatus id="54968837FFBDFF90DA1E8B3EFB270700" box="[1070,1168,1604,1630]" pageId="3" pageNumber="212" type="holotype">holotype</typeStatus>
= BP 2800/1! =
<bibRefCitation id="EFBC4B64FFBDFF90DB7D8B3EFE9D07DC" author="Hajos, M. &amp; Stradner, H." pageId="3" pageNumber="212" pagination="913 - 1009" refId="ref5786" refString="Hajos, M. &amp; Stradner, H. (1975) Late Cretaceous Archaeomonadaceae, Diatomaceae, and Silicoflagellatae from the South Pacific Ocean, Deep Sea Drilling Project, Leg 29, Site 275. Initial Reports of the Deep Sea Drilling Project 29: 913 - 1009. https: // doi. org / 10.2973 / dsdp. proc. 29.126.1975" type="journal article" year="1975">Hajós &amp; Stradner 1975</bibRefCitation>
: pl. 13, fig. 12, = reproduced as our
<figureCitation id="13162A10FFBDFF90DCF08B1DFCA907DC" box="[704,798,1639,1666]" captionStart="FIGURES 111" captionStartId="1.[136,248,1498,1520]" captionTargetBox="[216,1372,242,1471]" captionTargetId="figure-30@1.[216,1372,242,1471]" captionTargetPageId="1" captionText="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" figureDoi="http://doi.org/10.5281/zenodo.7800843" httpUri="https://zenodo.org/record/7800843/files/figure.png" pageId="3" pageNumber="212">Figure 5</figureCitation>
and specimens in
<figureCitation id="13162A10FFBDFF90DDDD8B1DFBC407DF" box="[1005,1139,1639,1665]" captionStart="FIGURES 111" captionStartId="1.[136,248,1498,1520]" captionTargetBox="[216,1372,242,1471]" captionTargetId="figure-30@1.[216,1372,242,1471]" captionTargetPageId="1" captionText="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" figureDoi="http://doi.org/10.5281/zenodo.7800843" httpUri="https://zenodo.org/record/7800843/files/figure.png" pageId="3" pageNumber="212">Figures 1, 2</figureCitation>
)
</paragraph>
<paragraph id="8B923695FFBDFF90DE8D8BF0FF1D0796" blockId="3.[136,1452,1568,2088]" pageId="3" pageNumber="212">
Localities:—Upper Cretaceous:
<collectionCode id="ED3CAE50FFBDFF90DC128BF0FDD007FA" box="[546,615,1674,1700]" pageId="3" pageNumber="212">DSDP</collectionCode>
Leg 29, see
<tableCitation id="C6AF032EFFBDFF90DCC58BF0FCFF07FA" box="[757,840,1674,1700]" captionStart="TABLE 1" captionStartId="4.[137,229,514,538]" captionTargetId="graphics-218@4.[651,937,615,931]" captionTargetPageId="4" captionText="TABLE 1. Table of occurrences for Longinata acuta from Hajós &amp; Stradner (1975: table 2, pp. 9168, for Longinata acuta occurrences see p. 917), * = type sample; abbreviations from Hajós &amp; Stradner: C = common (50%75%); R = rare (0%25%)." httpUri="http://table.plazi.org/id/DF52661DFFBAFF97DEB98F78FEB4033C" pageId="3" pageNumber="212" tableUuid="DF52661DFFBAFF97DEB98F78FEB4033C">Table 1</tableCitation>
below;
<collectionCode id="ED3CAE50FFBDFF90DD928BF0FC5007FA" box="[930,999,1674,1700]" pageId="3" pageNumber="212">DSDP</collectionCode>
275 1-2, 123-4, our
<figureCitation id="13162A10FFBDFF90DAFE8BF0FACB07FA" box="[1230,1404,1674,1701]" captionStart="FIGURES 111" captionStartId="1.[136,248,1498,1520]" captionTargetBox="[216,1372,242,1471]" captionTargetId="figure-30@1.[216,1372,242,1471]" captionTargetPageId="1" captionText="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" figureDoi="http://doi.org/10.5281/zenodo.7800843" httpUri="https://zenodo.org/record/7800843/files/figure.png" pageId="3" pageNumber="212">Figures 7, 8, 11</figureCitation>
,
<figureCitation id="13162A10FFBDFF90DBB98BF0FF110796" captionStart="FIGURES 1214" captionStartId="2.[136,248,1913,1935]" captionTargetBox="[308,1278,190,1889]" captionTargetId="figure-29@2.[308,1278,190,1889]" captionTargetPageId="2" captionText="FIGURES 1214: Longinata acuta SEM, Fig. 12, pair of valves with peg arrowed, shorter projections with plain arrow, adjoining pegs with hashed arrows; Fig. 13, external view with scattered pores on surface, rimoportula arrowed; Fig. 14, paired valves at poles, pore-field-like structure, arrowed. Scale bars = 5μm." figureDoi="http://doi.org/10.5281/zenodo.7800845" httpUri="https://zenodo.org/record/7800845/files/figure.png" pageId="3" pageNumber="212">12, 13</figureCitation>
.
</paragraph>
<paragraph id="8B923695FFBDFF97DE8D8BABFE3F007C" blockId="3.[136,1452,1568,2088]" lastBlockId="4.[136,1452,158,467]" lastPageId="4" lastPageNumber="213" pageId="3" pageNumber="212">
Valves thin, taper from centre towards poles, width 710μm at centre, ≤ 2μm at poles, length 80120μm (
<figureCitation id="13162A10FFBDFF90DB738BABFA1107B5" box="[1347,1446,1744,1771]" captionStart="FIGURES 111" captionStartId="1.[136,248,1498,1520]" captionTargetBox="[216,1372,242,1471]" captionTargetId="figure-30@1.[216,1372,242,1471]" captionTargetPageId="1" captionText="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" figureDoi="http://doi.org/10.5281/zenodo.7800843" httpUri="https://zenodo.org/record/7800843/files/figure.png" pageId="3" pageNumber="212">Figs 15</figureCitation>
,
<figureCitation id="13162A10FFBDFF90DEB88B8EFF100651" box="[136,167,1780,1807]" captionStart="FIGURES 1518" captionStartId="3.[136,248,1429,1451]" captionTargetBox="[340,1247,190,1405]" captionTargetId="figure-19@3.[340,1247,190,1405]" captionTargetPageId="3" captionText="FIGURES 1518: Longinata acuta SEM, Fig. 15, pair of whole valves; Fig. 16, detail from specimen in Fig. 15, showing rimoportula (arrow) and sparse poroids; Fig. 17, detail showing rimoportula (arrow) and pegs (double-headed arrow). Scale bars = 20μm (Fig. 15), 5μm (Fig. 16, 18), 2μm (Fig. 17)." figureDoi="http://doi.org/10.5281/zenodo.7800847" httpUri="https://zenodo.org/record/7800847/files/figure.png" pageId="3" pageNumber="212">15</figureCitation>
). No visible sternum, mantle shallow at centre, larger at poles where valve becomes raised into extended protrusion at each pole (ca. 22.5μm) (
<figureCitation id="13162A10FFBDFF90DFE08A6DFD32066F" box="[464,645,1815,1842]" captionStart-0="FIGURES 111" captionStart-1="FIGURES 1214" captionStart-2="FIGURES 1518" captionStartId-0="1.[136,248,1498,1520]" captionStartId-1="2.[136,248,1913,1935]" captionStartId-2="3.[136,248,1429,1451]" captionTargetBox-0="[216,1372,242,1471]" captionTargetBox-1="[308,1278,190,1889]" captionTargetBox-2="[340,1247,190,1405]" captionTargetId-0="figure-30@1.[216,1372,242,1471]" captionTargetId-1="figure-29@2.[308,1278,190,1889]" captionTargetId-2="figure-19@3.[340,1247,190,1405]" captionTargetPageId-0="1" captionTargetPageId-1="2" captionTargetPageId-2="3" captionText-0="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" captionText-1="FIGURES 1214: Longinata acuta SEM, Fig. 12, pair of valves with peg arrowed, shorter projections with plain arrow, adjoining pegs with hashed arrows; Fig. 13, external view with scattered pores on surface, rimoportula arrowed; Fig. 14, paired valves at poles, pore-field-like structure, arrowed. Scale bars = 5μm." captionText-2="FIGURES 1518: Longinata acuta SEM, Fig. 15, pair of whole valves; Fig. 16, detail from specimen in Fig. 15, showing rimoportula (arrow) and sparse poroids; Fig. 17, detail showing rimoportula (arrow) and pegs (double-headed arrow). Scale bars = 20μm (Fig. 15), 5μm (Fig. 16, 18), 2μm (Fig. 17)." figureDoi-0="http://doi.org/10.5281/zenodo.7800843" figureDoi-1="http://doi.org/10.5281/zenodo.7800845" figureDoi-2="http://doi.org/10.5281/zenodo.7800847" httpUri-0="https://zenodo.org/record/7800843/files/figure.png" httpUri-1="https://zenodo.org/record/7800845/files/figure.png" httpUri-2="https://zenodo.org/record/7800847/files/figure.png" pageId="3" pageNumber="212">Figs 4, 5, 817</figureCitation>
). Base of polar protrusion with pore-field composed of closer packed and regular puncta (areola) (
<figureCitation id="13162A10FFBDFF90DFD08A40FDE0060A" box="[480,599,1850,1876]" captionStart="FIGURES 111" captionStartId="1.[136,248,1498,1520]" captionTargetBox="[216,1372,242,1471]" captionTargetId="figure-30@1.[216,1372,242,1471]" captionTargetPageId="1" captionText="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" figureDoi="http://doi.org/10.5281/zenodo.7800843" httpUri="https://zenodo.org/record/7800843/files/figure.png" pageId="3" pageNumber="212">Figs 8, 11</figureCitation>
,
<figureCitation id="13162A10FFBDFF90DC558A40FD34060A" box="[613,643,1850,1876]" captionStart="FIGURES 1214" captionStartId="2.[136,248,1913,1935]" captionTargetBox="[308,1278,190,1889]" captionTargetId="figure-29@2.[308,1278,190,1889]" captionTargetPageId="2" captionText="FIGURES 1214: Longinata acuta SEM, Fig. 12, pair of valves with peg arrowed, shorter projections with plain arrow, adjoining pegs with hashed arrows; Fig. 13, external view with scattered pores on surface, rimoportula arrowed; Fig. 14, paired valves at poles, pore-field-like structure, arrowed. Scale bars = 5μm." figureDoi="http://doi.org/10.5281/zenodo.7800845" httpUri="https://zenodo.org/record/7800845/files/figure.png" pageId="3" pageNumber="212">14</figureCitation>
,
<figureCitation id="13162A10FFBDFF90DCA18A40FD07060A" box="[657,688,1850,1876]" captionStart="FIGURES 1518" captionStartId="3.[136,248,1429,1451]" captionTargetBox="[340,1247,190,1405]" captionTargetId="figure-19@3.[340,1247,190,1405]" captionTargetPageId="3" captionText="FIGURES 1518: Longinata acuta SEM, Fig. 15, pair of whole valves; Fig. 16, detail from specimen in Fig. 15, showing rimoportula (arrow) and sparse poroids; Fig. 17, detail showing rimoportula (arrow) and pegs (double-headed arrow). Scale bars = 20μm (Fig. 15), 5μm (Fig. 16, 18), 2μm (Fig. 17)." figureDoi="http://doi.org/10.5281/zenodo.7800847" httpUri="https://zenodo.org/record/7800847/files/figure.png" pageId="3" pageNumber="212">18</figureCitation>
). Internally, pore-field extends along valve margin by ca. 510μm (
<figureCitation id="13162A10FFBDFF90DEA08A27FF6E0626" box="[144,217,1885,1912]" captionStart="FIGURES 111" captionStartId="1.[136,248,1498,1520]" captionTargetBox="[216,1372,242,1471]" captionTargetId="figure-30@1.[216,1372,242,1471]" captionTargetPageId="1" captionText="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" figureDoi="http://doi.org/10.5281/zenodo.7800843" httpUri="https://zenodo.org/record/7800843/files/figure.png" pageId="3" pageNumber="212">Figs 9</figureCitation>
,
<figureCitation id="13162A10FFBDFF90DED68A24FEB20626" box="[230,261,1886,1912]" captionStart="FIGURES 1518" captionStartId="3.[136,248,1429,1451]" captionTargetBox="[340,1247,190,1405]" captionTargetId="figure-19@3.[340,1247,190,1405]" captionTargetPageId="3" captionText="FIGURES 1518: Longinata acuta SEM, Fig. 15, pair of whole valves; Fig. 16, detail from specimen in Fig. 15, showing rimoportula (arrow) and sparse poroids; Fig. 17, detail showing rimoportula (arrow) and pegs (double-headed arrow). Scale bars = 20μm (Fig. 15), 5μm (Fig. 16, 18), 2μm (Fig. 17)." figureDoi="http://doi.org/10.5281/zenodo.7800847" httpUri="https://zenodo.org/record/7800847/files/figure.png" pageId="3" pageNumber="212">18</figureCitation>
). Valve surface smooth with small, irregularly placed puncta (areola), internally simple holes, externally with rim and slightly raised from surface (
<figureCitation id="13162A10FFBDFF90DC548AFBFD5006C5" box="[612,743,1921,1947]" captionStart-0="FIGURES 1214" captionStart-1="FIGURES 1518" captionStartId-0="2.[136,248,1913,1935]" captionStartId-1="3.[136,248,1429,1451]" captionTargetBox-0="[308,1278,190,1889]" captionTargetBox-1="[340,1247,190,1405]" captionTargetId-0="figure-29@2.[308,1278,190,1889]" captionTargetId-1="figure-19@3.[340,1247,190,1405]" captionTargetPageId-0="2" captionTargetPageId-1="3" captionText-0="FIGURES 1214: Longinata acuta SEM, Fig. 12, pair of valves with peg arrowed, shorter projections with plain arrow, adjoining pegs with hashed arrows; Fig. 13, external view with scattered pores on surface, rimoportula arrowed; Fig. 14, paired valves at poles, pore-field-like structure, arrowed. Scale bars = 5μm." captionText-1="FIGURES 1518: Longinata acuta SEM, Fig. 15, pair of whole valves; Fig. 16, detail from specimen in Fig. 15, showing rimoportula (arrow) and sparse poroids; Fig. 17, detail showing rimoportula (arrow) and pegs (double-headed arrow). Scale bars = 20μm (Fig. 15), 5μm (Fig. 16, 18), 2μm (Fig. 17)." figureDoi-0="http://doi.org/10.5281/zenodo.7800845" figureDoi-1="http://doi.org/10.5281/zenodo.7800847" httpUri-0="https://zenodo.org/record/7800845/files/figure.png" httpUri-1="https://zenodo.org/record/7800847/files/figure.png" pageId="3" pageNumber="212">Figs 1217</figureCitation>
). Faint outline of rib-like structure at valve centre (
<figureCitation id="13162A10FFBDFF90DB088AFBFA2A06C5" box="[1336,1437,1921,1947]" captionStart="FIGURES 111" captionStartId="1.[136,248,1498,1520]" captionTargetBox="[216,1372,242,1471]" captionTargetId="figure-30@1.[216,1372,242,1471]" captionTargetPageId="1" captionText="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" figureDoi="http://doi.org/10.5281/zenodo.7800843" httpUri="https://zenodo.org/record/7800843/files/figure.png" pageId="3" pageNumber="212">Figs 12</figureCitation>
), sometimes absent (
<figureCitation id="13162A10FFBDFF90DF528ADEFE7E06E1" box="[354,457,1956,1983]" captionStart="FIGURES 111" captionStartId="1.[136,248,1498,1520]" captionTargetBox="[216,1372,242,1471]" captionTargetId="figure-30@1.[216,1372,242,1471]" captionTargetPageId="1" captionText="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" figureDoi="http://doi.org/10.5281/zenodo.7800843" httpUri="https://zenodo.org/record/7800843/files/figure.png" pageId="3" pageNumber="212">Figs 35</figureCitation>
,
<figureCitation id="13162A10FFBDFF90DFE78ADEFD9506E1" box="[471,546,1956,1983]" captionStart="FIGURES 1518" captionStartId="3.[136,248,1429,1451]" captionTargetBox="[340,1247,190,1405]" captionTargetId="figure-19@3.[340,1247,190,1405]" captionTargetPageId="3" captionText="FIGURES 1518: Longinata acuta SEM, Fig. 15, pair of whole valves; Fig. 16, detail from specimen in Fig. 15, showing rimoportula (arrow) and sparse poroids; Fig. 17, detail showing rimoportula (arrow) and pegs (double-headed arrow). Scale bars = 20μm (Fig. 15), 5μm (Fig. 16, 18), 2μm (Fig. 17)." figureDoi="http://doi.org/10.5281/zenodo.7800847" httpUri="https://zenodo.org/record/7800847/files/figure.png" pageId="3" pageNumber="212">1517</figureCitation>
): internally absence of any structure (
<figureCitation id="13162A10FFBDFF90DDE38ADEFB8D06E1" box="[979,1082,1956,1983]" captionStart="FIGURES 111" captionStartId="1.[136,248,1498,1520]" captionTargetBox="[216,1372,242,1471]" captionTargetId="figure-30@1.[216,1372,242,1471]" captionTargetPageId="1" captionText="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" figureDoi="http://doi.org/10.5281/zenodo.7800843" httpUri="https://zenodo.org/record/7800843/files/figure.png" pageId="3" pageNumber="212">Figs 35</figureCitation>
,
<figureCitation id="13162A10FFBDFF90DA788ADEFB2406E0" box="[1096,1171,1956,1982]" captionStart="FIGURES 1214" captionStartId="2.[136,248,1913,1935]" captionTargetBox="[308,1278,190,1889]" captionTargetId="figure-29@2.[308,1278,190,1889]" captionTargetPageId="2" captionText="FIGURES 1214: Longinata acuta SEM, Fig. 12, pair of valves with peg arrowed, shorter projections with plain arrow, adjoining pegs with hashed arrows; Fig. 13, external view with scattered pores on surface, rimoportula arrowed; Fig. 14, paired valves at poles, pore-field-like structure, arrowed. Scale bars = 5μm." figureDoi="http://doi.org/10.5281/zenodo.7800845" httpUri="https://zenodo.org/record/7800845/files/figure.png" pageId="3" pageNumber="212">12, 13</figureCitation>
,
<figureCitation id="13162A10FFBDFF90DA918ADEFB5D06E1" box="[1185,1258,1956,1983]" captionStart="FIGURES 1518" captionStartId="3.[136,248,1429,1451]" captionTargetBox="[340,1247,190,1405]" captionTargetId="figure-19@3.[340,1247,190,1405]" captionTargetPageId="3" captionText="FIGURES 1518: Longinata acuta SEM, Fig. 15, pair of whole valves; Fig. 16, detail from specimen in Fig. 15, showing rimoportula (arrow) and sparse poroids; Fig. 17, detail showing rimoportula (arrow) and pegs (double-headed arrow). Scale bars = 20μm (Fig. 15), 5μm (Fig. 16, 18), 2μm (Fig. 17)." figureDoi="http://doi.org/10.5281/zenodo.7800847" httpUri="https://zenodo.org/record/7800847/files/figure.png" pageId="3" pageNumber="212">1517</figureCitation>
), externally riblike structure as small pegs extending outwards meeting similar at adjacent valve (
<figureCitation id="13162A10FFBDFF90DA748ABDFB2006BF" box="[1092,1175,1991,2017]" captionStart="FIGURES 111" captionStartId="1.[136,248,1498,1520]" captionTargetBox="[216,1372,242,1471]" captionTargetId="figure-30@1.[216,1372,242,1471]" captionTargetPageId="1" captionText="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" figureDoi="http://doi.org/10.5281/zenodo.7800843" httpUri="https://zenodo.org/record/7800843/files/figure.png" pageId="3" pageNumber="212">Fig. 10</figureCitation>
, arrows,
<figureCitation id="13162A10FFBDFF90DACF8ABDFAE606BF" box="[1279,1361,1991,2017]" captionStart="FIGURES 1214" captionStartId="2.[136,248,1913,1935]" captionTargetBox="[308,1278,190,1889]" captionTargetId="figure-29@2.[308,1278,190,1889]" captionTargetPageId="2" captionText="FIGURES 1214: Longinata acuta SEM, Fig. 12, pair of valves with peg arrowed, shorter projections with plain arrow, adjoining pegs with hashed arrows; Fig. 13, external view with scattered pores on surface, rimoportula arrowed; Fig. 14, paired valves at poles, pore-field-like structure, arrowed. Scale bars = 5μm." figureDoi="http://doi.org/10.5281/zenodo.7800845" httpUri="https://zenodo.org/record/7800845/files/figure.png" pageId="3" pageNumber="212">Fig. 12</figureCitation>
, dashed arrow,
<figureCitation id="13162A10FFBDFF90DEE88A90FE9C095A" box="[216,299,2026,2052]" captionStart="FIGURES 1518" captionStartId="3.[136,248,1429,1451]" captionTargetBox="[340,1247,190,1405]" captionTargetId="figure-19@3.[340,1247,190,1405]" captionTargetPageId="3" captionText="FIGURES 1518: Longinata acuta SEM, Fig. 15, pair of whole valves; Fig. 16, detail from specimen in Fig. 15, showing rimoportula (arrow) and sparse poroids; Fig. 17, detail showing rimoportula (arrow) and pegs (double-headed arrow). Scale bars = 20μm (Fig. 15), 5μm (Fig. 16, 18), 2μm (Fig. 17)." figureDoi="http://doi.org/10.5281/zenodo.7800847" httpUri="https://zenodo.org/record/7800847/files/figure.png" pageId="3" pageNumber="212">Fig. 16</figureCitation>
,
<figureCitation id="13162A10FFBDFF90DF098A90FE3A095A" box="[313,397,2026,2052]" captionStart="FIGURES 1518" captionStartId="3.[136,248,1429,1451]" captionTargetBox="[340,1247,190,1405]" captionTargetId="figure-19@3.[340,1247,190,1405]" captionTargetPageId="3" captionText="FIGURES 1518: Longinata acuta SEM, Fig. 15, pair of whole valves; Fig. 16, detail from specimen in Fig. 15, showing rimoportula (arrow) and sparse poroids; Fig. 17, detail showing rimoportula (arrow) and pegs (double-headed arrow). Scale bars = 20μm (Fig. 15), 5μm (Fig. 16, 18), 2μm (Fig. 17)." figureDoi="http://doi.org/10.5281/zenodo.7800847" httpUri="https://zenodo.org/record/7800847/files/figure.png" pageId="3" pageNumber="212">Fig. 17</figureCitation>
, double-headed arrow,
<figureCitation id="13162A10FFBDFF90DCA88A90FD5C095A" box="[664,747,2026,2052]" captionStart="FIGURES 1518" captionStartId="3.[136,248,1429,1451]" captionTargetBox="[340,1247,190,1405]" captionTargetId="figure-19@3.[340,1247,190,1405]" captionTargetPageId="3" captionText="FIGURES 1518: Longinata acuta SEM, Fig. 15, pair of whole valves; Fig. 16, detail from specimen in Fig. 15, showing rimoportula (arrow) and sparse poroids; Fig. 17, detail showing rimoportula (arrow) and pegs (double-headed arrow). Scale bars = 20μm (Fig. 15), 5μm (Fig. 16, 18), 2μm (Fig. 17)." figureDoi="http://doi.org/10.5281/zenodo.7800847" httpUri="https://zenodo.org/record/7800847/files/figure.png" pageId="3" pageNumber="212">Fig. 18</figureCitation>
, three parallel arrows); occasional smaller pegs either side of larger protrusions, limited to centre of valve (
<figureCitation id="13162A10FFBDFF90DCA38577FD500976" box="[659,743,2061,2088]" captionStart="FIGURES 1214" captionStartId="2.[136,248,1913,1935]" captionTargetBox="[308,1278,190,1889]" captionTargetId="figure-29@2.[308,1278,190,1889]" captionTargetPageId="2" captionText="FIGURES 1214: Longinata acuta SEM, Fig. 12, pair of valves with peg arrowed, shorter projections with plain arrow, adjoining pegs with hashed arrows; Fig. 13, external view with scattered pores on surface, rimoportula arrowed; Fig. 14, paired valves at poles, pore-field-like structure, arrowed. Scale bars = 5μm." figureDoi="http://doi.org/10.5281/zenodo.7800845" httpUri="https://zenodo.org/record/7800845/files/figure.png" pageId="3" pageNumber="212">Fig. 12</figureCitation>
, arrows,
<figureCitation id="13162A10FFBDFF90DD618577FC120976" box="[849,933,2061,2088]" captionStart="FIGURES 1518" captionStartId="3.[136,248,1429,1451]" captionTargetBox="[340,1247,190,1405]" captionTargetId="figure-19@3.[340,1247,190,1405]" captionTargetPageId="3" captionText="FIGURES 1518: Longinata acuta SEM, Fig. 15, pair of whole valves; Fig. 16, detail from specimen in Fig. 15, showing rimoportula (arrow) and sparse poroids; Fig. 17, detail showing rimoportula (arrow) and pegs (double-headed arrow). Scale bars = 20μm (Fig. 15), 5μm (Fig. 16, 18), 2μm (Fig. 17)." figureDoi="http://doi.org/10.5281/zenodo.7800847" httpUri="https://zenodo.org/record/7800847/files/figure.png" pageId="3" pageNumber="212">Fig. 17</figureCitation>
, double-headed arrow). Towards poles, valve raised as single protrusion at each pole (
<figureCitation id="13162A10FFBAFF97DC788DE4FD0E01E6" box="[584,697,158,184]" captionStart="FIGURES 111" captionStartId="1.[136,248,1498,1520]" captionTargetBox="[216,1372,242,1471]" captionTargetId="figure-30@1.[216,1372,242,1471]" captionTargetPageId="1" captionText="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" figureDoi="http://doi.org/10.5281/zenodo.7800843" httpUri="https://zenodo.org/record/7800843/files/figure.png" pageId="4" pageNumber="213">Figs 8, 11</figureCitation>
,
<figureCitation id="13162A10FFBAFF97DCF58DE4FD5301E6" box="[709,740,158,184]" captionStart="FIGURES 1214" captionStartId="2.[136,248,1913,1935]" captionTargetBox="[308,1278,190,1889]" captionTargetId="figure-29@2.[308,1278,190,1889]" captionTargetPageId="2" captionText="FIGURES 1214: Longinata acuta SEM, Fig. 12, pair of valves with peg arrowed, shorter projections with plain arrow, adjoining pegs with hashed arrows; Fig. 13, external view with scattered pores on surface, rimoportula arrowed; Fig. 14, paired valves at poles, pore-field-like structure, arrowed. Scale bars = 5μm." figureDoi="http://doi.org/10.5281/zenodo.7800845" httpUri="https://zenodo.org/record/7800845/files/figure.png" pageId="4" pageNumber="213">14</figureCitation>
). Base of protrusion with pore-field composed of closer packed and regular puncta (areola) (
<figureCitation id="13162A10FFBAFF97DFE68DBBFDA90182" box="[470,542,193,220]" captionStart="FIGURES 111" captionStartId="1.[136,248,1498,1520]" captionTargetBox="[216,1372,242,1471]" captionTargetId="figure-30@1.[216,1372,242,1471]" captionTargetPageId="1" captionText="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" figureDoi="http://doi.org/10.5281/zenodo.7800843" httpUri="https://zenodo.org/record/7800843/files/figure.png" pageId="4" pageNumber="213">Figs 8</figureCitation>
,
<figureCitation id="13162A10FFBAFF97DC1B8DB8FDFE0182" box="[555,585,194,220]" captionStart="FIGURES 1214" captionStartId="2.[136,248,1913,1935]" captionTargetBox="[308,1278,190,1889]" captionTargetId="figure-29@2.[308,1278,190,1889]" captionTargetPageId="2" captionText="FIGURES 1214: Longinata acuta SEM, Fig. 12, pair of valves with peg arrowed, shorter projections with plain arrow, adjoining pegs with hashed arrows; Fig. 13, external view with scattered pores on surface, rimoportula arrowed; Fig. 14, paired valves at poles, pore-field-like structure, arrowed. Scale bars = 5μm." figureDoi="http://doi.org/10.5281/zenodo.7800845" httpUri="https://zenodo.org/record/7800845/files/figure.png" pageId="4" pageNumber="213">14</figureCitation>
,
<figureCitation id="13162A10FFBAFF97DC658DB8FDC40182" box="[597,627,194,220]" captionStart="FIGURES 1518" captionStartId="3.[136,248,1429,1451]" captionTargetBox="[340,1247,190,1405]" captionTargetId="figure-19@3.[340,1247,190,1405]" captionTargetPageId="3" captionText="FIGURES 1518: Longinata acuta SEM, Fig. 15, pair of whole valves; Fig. 16, detail from specimen in Fig. 15, showing rimoportula (arrow) and sparse poroids; Fig. 17, detail showing rimoportula (arrow) and pegs (double-headed arrow). Scale bars = 20μm (Fig. 15), 5μm (Fig. 16, 18), 2μm (Fig. 17)." figureDoi="http://doi.org/10.5281/zenodo.7800847" httpUri="https://zenodo.org/record/7800847/files/figure.png" pageId="4" pageNumber="213">18</figureCitation>
), tip plain (
<figureCitation id="13162A10FFBAFF97DCC48DBBFCFE0182" box="[756,841,193,220]" captionStart="FIGURES 111" captionStartId="1.[136,248,1498,1520]" captionTargetBox="[216,1372,242,1471]" captionTargetId="figure-30@1.[216,1372,242,1471]" captionTargetPageId="1" captionText="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" figureDoi="http://doi.org/10.5281/zenodo.7800843" httpUri="https://zenodo.org/record/7800843/files/figure.png" pageId="4" pageNumber="213">Figs 11</figureCitation>
,
<figureCitation id="13162A10FFBAFF97DD658DB8FCC30182" box="[853,884,194,220]" captionStart="FIGURES 1518" captionStartId="3.[136,248,1429,1451]" captionTargetBox="[340,1247,190,1405]" captionTargetId="figure-19@3.[340,1247,190,1405]" captionTargetPageId="3" captionText="FIGURES 1518: Longinata acuta SEM, Fig. 15, pair of whole valves; Fig. 16, detail from specimen in Fig. 15, showing rimoportula (arrow) and sparse poroids; Fig. 17, detail showing rimoportula (arrow) and pegs (double-headed arrow). Scale bars = 20μm (Fig. 15), 5μm (Fig. 16, 18), 2μm (Fig. 17)." figureDoi="http://doi.org/10.5281/zenodo.7800847" httpUri="https://zenodo.org/record/7800847/files/figure.png" pageId="4" pageNumber="213">18</figureCitation>
). Internally, pore-field extends along valve margin by ca. 510μm (
<figureCitation id="13162A10FFBAFF97DF718D9FFE3101A1" box="[321,390,229,255]" captionStart="FIGURES 111" captionStartId="1.[136,248,1498,1520]" captionTargetBox="[216,1372,242,1471]" captionTargetId="figure-30@1.[216,1372,242,1471]" captionTargetPageId="1" captionText="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" figureDoi="http://doi.org/10.5281/zenodo.7800843" httpUri="https://zenodo.org/record/7800843/files/figure.png" pageId="4" pageNumber="213">Fig. 9</figureCitation>
). Rimportulae possibly present (
<figureCitation id="13162A10FFBAFF97DCC78D9FFCFD01A1" box="[759,842,229,255]" captionStart="FIGURES 1214" captionStartId="2.[136,248,1913,1935]" captionTargetBox="[308,1278,190,1889]" captionTargetId="figure-29@2.[308,1278,190,1889]" captionTargetPageId="2" captionText="FIGURES 1214: Longinata acuta SEM, Fig. 12, pair of valves with peg arrowed, shorter projections with plain arrow, adjoining pegs with hashed arrows; Fig. 13, external view with scattered pores on surface, rimoportula arrowed; Fig. 14, paired valves at poles, pore-field-like structure, arrowed. Scale bars = 5μm." figureDoi="http://doi.org/10.5281/zenodo.7800845" httpUri="https://zenodo.org/record/7800845/files/figure.png" pageId="4" pageNumber="213">Fig. 12</figureCitation>
, arrow), internally sometimes on mantle (
<figureCitation id="13162A10FFBAFF97DB148D9FFA1101A1" box="[1316,1446,228,255]" captionStart="FIGURES 1518" captionStartId="3.[136,248,1429,1451]" captionTargetBox="[340,1247,190,1405]" captionTargetId="figure-19@3.[340,1247,190,1405]" captionTargetPageId="3" captionText="FIGURES 1518: Longinata acuta SEM, Fig. 15, pair of whole valves; Fig. 16, detail from specimen in Fig. 15, showing rimoportula (arrow) and sparse poroids; Fig. 17, detail showing rimoportula (arrow) and pegs (double-headed arrow). Scale bars = 20μm (Fig. 15), 5μm (Fig. 16, 18), 2μm (Fig. 17)." figureDoi="http://doi.org/10.5281/zenodo.7800847" httpUri="https://zenodo.org/record/7800847/files/figure.png" pageId="4" pageNumber="213">Figs 16, 17</figureCitation>
, single-headed arrows).
</paragraph>
<paragraph id="8B923695FFBAFF97DE8D8C51FB64008D" blockId="4.[136,1452,158,467]" pageId="4" pageNumber="213">
Although just the one figure was provided by Hajós, the recorded stratigraphic range indicated its occurrence elsewhere in the same core (
<tableCitation id="C6AF032EFFBAFF97DFF38C34FDA00036" box="[451,535,334,360]" captionStart="TABLE 1" captionStartId="4.[137,229,514,538]" captionTargetId="graphics-218@4.[651,937,615,931]" captionTargetPageId="4" captionText="TABLE 1. Table of occurrences for Longinata acuta from Hajós &amp; Stradner (1975: table 2, pp. 9168, for Longinata acuta occurrences see p. 917), * = type sample; abbreviations from Hajós &amp; Stradner: C = common (50%75%); R = rare (0%25%)." httpUri="http://table.plazi.org/id/DF52661DFFBAFF97DEB98F78FEB4033C" pageId="4" pageNumber="213" tableUuid="DF52661DFFBAFF97DEB98F78FEB4033C">Table 1</tableCitation>
). Examination of the Hajós slides kept in the Hungarian Natural History Museum (BP) yielded very few specimens, but all very much with the same appearance as the
<typeStatus id="54968837FFBAFF97DA608C0BFB0500D5" box="[1104,1202,369,395]" pageId="4" pageNumber="213" type="holotype">holotype</typeStatus>
illustration (e.g.,
<figureCitation id="13162A10FFBAFF97DB4B8C0BFF0200F1" captionStart="FIGURES 111" captionStartId="1.[136,248,1498,1520]" captionTargetBox="[216,1372,242,1471]" captionTargetId="figure-30@1.[216,1372,242,1471]" captionTargetPageId="1" captionText="FIGURES 111: Longinata acuta Figs 1, 2, LM holotype BP 2800/1!, New Zealand, Campbell Plateau, South Pacific, “DSDP Leg 29, Sample 2751-2, 40-42 cm […] Upper Cretaceous”, specimen length = 90μm, width = 5μm (at widest point); Figs 3, 4, BP 2800/1!, Fig. 5, L. acuta reproduced from Hajós &amp; Stradner 1975: pl. 13, fig. 12; Figs 6, 7, Longinata fueloepi, “DSDP Leg 29, Sample 275-1-2, 130-132 cm […] Upper Cretaceous” (Hajós &amp; Stradner 1975: 935), Fig. 6, SEM of while valve, internal view, scale bar = 20μm, Fig. 7, reproduced from Hajós &amp; Stradner 1975, pl. 13, fig. 19; Figs 811, SEM, Fig. 8, detail of poles, Fig. 9, internal view of pole showing pore-field-like structure, two arrows, Fig. 10, external view of surface of valve with pegs arrowed; Fig. 11, external view of pole showing pore-field-like structure, arrow. Scale bars = 20μm (Figs 14, 6), = 2μm (Fig. 8), = 5μm (Figs 911, 13, 14)" figureDoi="http://doi.org/10.5281/zenodo.7800843" httpUri="https://zenodo.org/record/7800843/files/figure.png" pageId="4" pageNumber="213">Figs 3, 4</figureCitation>
). Since its first description by Hajós,
<taxonomicName id="4C2D4D16FFBAFF97DC668CEFFCBA00F0" box="[598,781,405,430]" class="Bacillariophyceae" genus="Longinata" higherTaxonomySource="GBIF" kingdom="Chromista" pageId="4" pageNumber="213" phylum="Ochrophyta" rank="species" species="acuta">
<emphasis id="B959EA87FFBAFF97DC668CEFFCBA00F0" box="[598,781,405,430]" italics="true" pageId="4" pageNumber="213">Longinata acuta</emphasis>
</taxonomicName>
has been rarely encountered, with the only additional report in
<bibRefCitation id="EFBC4B64FFBAFF97DE958CC3FE2E008D" author="Chambers, P. M." box="[165,409,441,467]" pageId="4" pageNumber="213" refId="ref5092" refString="Chambers, P. M. (1997) Late Cretaceous and Paleocene marine diatom floras. Doctoral thesis (Ph. D), UCL (University College London). [https: // discovery. ucl. ac. uk / id / eprint / 10104676 /]" type="url" year="1997">Chambers (1997: 291</bibRefCitation>
, pl. 13, fig. 35); his specimens are here interpreted as
<emphasis id="B959EA87FFBAFF97DDC78CC3FB64008D" box="[1015,1235,441,467]" italics="true" pageId="4" pageNumber="213">
<taxonomicName id="4C2D4D16FFBAFF97DDC78CC3FB78008D" authorityName="D. M. Williams &amp; P. A. Sims" authorityYear="2023" baseAuthorityName="Hajos" box="[1015,1231,441,467]" class="Bacillariophyceae" genus="Longinata" higherTaxonomySource="GBIF" kingdom="Chromista" pageId="4" pageNumber="213" phylum="Ochrophyta" rank="species" species="fueloepi">Longinata fueloepi</taxonomicName>
.
</emphasis>
</paragraph>
</subSubSection>
</treatment>
</document>