187 lines
31 KiB
XML
187 lines
31 KiB
XML
<document id="E44447C8C1E10B9E2A7B2D86D8545DF1" ID-DOI="10.2478/if-2019-0013" ID-ISSN="2533-4069" ID-Zenodo-Dep="5386203" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1630303095841" checkinUser="diego" docAuthor="Friis, Else Marie, Crane, Peter R. & Pedersen, Kaj Raunsgaard" docDate="2019" docId="0396DC10BF4BC245CEFCB316E47819F2" docLanguage="en" docName="2_Friis.pdf" docOrigin="Fossil Imprint 75 (2)" docSource="http://dx.doi.org/10.2478/if-2019-0013" docStyle="DocumentStyle:0EC54BF35E227CA4627F894F6BA30634.4:FossilImprint.2016-.journal_article" docStyleId="0EC54BF35E227CA4627F894F6BA30634" docStyleName="FossilImprint.2016-.journal_article" docStyleVersion="4" docTitle="Dictyozonia pusilla E. M. FRIIS, P. R. CRANE et K. R. PEDERSEN 2019, sp. nov." docType="treatment" docVersion="5" lastPageNumber="223" masterDocId="FFAFA468BF0FC203CD58B635E7781C51" masterDocTitle="The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community" masterLastPageNumber="257" masterPageNumber="153" pageNumber="221" updateTime="1699221227565" updateUser="plazi" zenodo-license-document="CC-BY-NC-ND-3.0">
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<mods:title id="B9BB9B7D9741CC6CABF6E31F7089D50C">The Early Cretaceous Mesofossil Flora Of Torres Vedras (Ne Of Forte Da Forca), Portugal: A Palaeofloristic Analysis Of An Early Angiosperm Community</mods:title>
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<mods:namePart id="57D3C746CDCA1E5C239190058325A4FA">Friis, Else Marie</mods:namePart>
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<mods:namePart id="3047AECCBABFD7654A3CBA3EABF677AF">Crane, Peter R.</mods:namePart>
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<mods:namePart id="5CF43D2D9C5C9BC1E200EC433E318279">Pedersen, Kaj Raunsgaard</mods:namePart>
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<mods:typeOfResource id="44EA9A1F51BECD161A596A57A6E6801E">text</mods:typeOfResource>
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<mods:title id="47E01099AF1AA931C5CC7D686F0CF9CD">Fossil Imprint</mods:title>
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<mods:part id="AA17B2B999B96289B10E93BEE8588DF5">
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<mods:date id="2583F49476FE9E51A9054459FCD1BBA4">2019</mods:date>
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<mods:number id="BE73C6035475D701B659A6A9DF22CF6E">2019-11-25</mods:number>
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<mods:number id="0E3EFD078F57288059B2C50E05075622">75</mods:number>
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<mods:url id="CD477038A5BE56FC2BD69C6AFE8B42B4">http://dx.doi.org/10.2478/if-2019-0013</mods:url>
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<treatment id="0396DC10BF4BC245CEFCB316E47819F2" LSID="urn:lsid:plazi:treatment:0396DC10BF4BC245CEFCB316E47819F2" httpUri="http://treatment.plazi.org/id/0396DC10BF4BC245CEFCB316E47819F2" lastPageId="70" lastPageNumber="223" pageId="68" pageNumber="221">
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<subSubSection id="C3253E8DBF4BC247CEFCB316E3A2192A" pageId="68" pageNumber="221" type="nomenclature">
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<paragraph id="8B806D06BF4BC247CEFCB316E26D190A" blockId="68.[932,1393,1315,1371]" pageId="68" pageNumber="221">
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<heading id="D0C8DA6ABF4BC247CEFCB316E26D190A" centered="true" fontSize="8" level="2" pageId="68" pageNumber="221" reason="2">
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<emphasis id="B94BB114BF4BC247CEFCB316E26D190A" bold="true" pageId="68" pageNumber="221">
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<taxonomicName id="4C3F1685BF4BC247CEFCB316E3C11908" authority="E.M.FRIIS, P.R.CRANE et K.R.PEDERSEN" authorityName="E. M. FRIIS, P. R. CRANE et K. R. PEDERSEN" authorityYear="2019" class="Magnoliopsida" family="Chloranthaceae" genus="Dictyozonia" kingdom="Plantae" order="Chloranthales" pageId="68" pageNumber="221" phylum="Tracheophyta" rank="species" species="pusilla" status="sp. nov.">
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<emphasis id="B94BB114BF4BC247CEFCB316E30F196A" bold="true" box="[932,1143,1315,1339]" italics="true" pageId="68" pageNumber="221">Dictyozonia pusilla</emphasis>
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E.M.FRIIS, P.R.CRANE et K.R.PEDERSEN
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</taxonomicName>
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<taxonomicNameLabel id="A2780C6FBF4BC247C998B376E26D190A" box="[1216,1301,1347,1371]" pageId="68" pageNumber="221" rank="species">sp. nov.</taxonomicNameLabel>
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</emphasis>
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</heading>
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</paragraph>
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<paragraph id="8B806D06BF4BC247C962B356E3A2192A" blockId="68.[1082,1242,1379,1403]" box="[1082,1242,1379,1403]" pageId="68" pageNumber="221">
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<figureCitation id="13047183BF4BC247C962B356E3A2192A" box="[1082,1242,1379,1403]" captionStart="Text-fig" captionStartId="69.[125,206,1887,1908]" captionTargetBox="[127,1440,151,1865]" captionTargetId="figure-17@69.[660,1444,643,1287]" captionTargetPageId="69" captionText="Text-fig. 44. Scanning electron microscope (SEM) images of monocolpate pollen of Juhaszia portugallica gen. et sp. nov. from a fragment of a pollen sac (a–e) and stamen fragment and pollen of Dictyozonia pusilla gen. et sp. nov. (f–k); Torres Vedras locality, Portugal. a) Holotype; fragment of pollen sac that yielded the pollen in (b–e); b) Proximal surface of pollen grain showing reticulate sculpture in the equatorial regions grading into more a continuous foveolate tectum at the proximal pole; c) Reticulum on the proximal surface showing smooth muri delimiting large and small luminae. Muri supported by numerous short columellae that are only loosely attached to the smooth surface of the foot layer; d) Distal surface of pollen grain showing the long colpus and reticulate sculpture with a distinctive pattern of large and small luminae; e) Pollen grain from which the reticulum has become" figureDoi="http://doi.org/10.5281/zenodo.5386351" httpUri="https://zenodo.org/record/5386351/files/figure.png" pageId="68" pageNumber="221">Text-fig. 44f–k</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="C3253E8DBF4BC245CE29B3A6E47819F2" lastPageId="70" lastPageNumber="223" pageId="68" pageNumber="221" type="description">
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<paragraph id="8B806D06BF4BC247CE29B3A6E3AD199B" blockId="68.[843,1482,1426,1482]" pageId="68" pageNumber="221">
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H o l o t y p e. Designated here. S105002 (Torres Vedras sample 144; figured
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<figureCitation id="13047183BF4BC247C97DB387E3B1199B" box="[1061,1225,1458,1482]" captionStart="Text-fig" captionStartId="69.[125,206,1887,1908]" captionTargetBox="[127,1440,151,1865]" captionTargetId="figure-17@69.[660,1444,643,1287]" captionTargetPageId="69" captionText="Text-fig. 44. Scanning electron microscope (SEM) images of monocolpate pollen of Juhaszia portugallica gen. et sp. nov. from a fragment of a pollen sac (a–e) and stamen fragment and pollen of Dictyozonia pusilla gen. et sp. nov. (f–k); Torres Vedras locality, Portugal. a) Holotype; fragment of pollen sac that yielded the pollen in (b–e); b) Proximal surface of pollen grain showing reticulate sculpture in the equatorial regions grading into more a continuous foveolate tectum at the proximal pole; c) Reticulum on the proximal surface showing smooth muri delimiting large and small luminae. Muri supported by numerous short columellae that are only loosely attached to the smooth surface of the foot layer; d) Distal surface of pollen grain showing the long colpus and reticulate sculpture with a distinctive pattern of large and small luminae; e) Pollen grain from which the reticulum has become" figureDoi="http://doi.org/10.5281/zenodo.5386351" httpUri="https://zenodo.org/record/5386351/files/figure.png" pageId="68" pageNumber="221">Text-fig. 44f–k</figureCitation>
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).
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</paragraph>
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<paragraph id="8B806D06BF4BC247CE29B3D7E2BF19A8" blockId="68.[843,1479,1505,1561]" box="[881,1479,1505,1530]" pageId="68" pageNumber="221">P l a n t F o s s i l N a m e s R e g i s t r y N u m b e r.</paragraph>
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<paragraph id="8B806D06BF4BC247CE13B034E3E91A48" blockId="68.[843,1479,1505,1561]" box="[843,1169,1537,1561]" pageId="68" pageNumber="221">PFN000523 (for new species).</paragraph>
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<paragraph id="8B806D06BF4BC247CE29B004E3501AD9" blockId="68.[843,1482,1584,1672]" pageId="68" pageNumber="221">
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<materialsCitation id="3B57675BBF4BC247CE29B004E35C1AD9" collectionCode="R" country="Sweden" county="Swedish Museum of Natural History" location="Palaeobotanical Collections" municipality="Department of Palaeobiology" pageId="68" pageNumber="221" specimenCount="1" stateProvince="Stockholm">
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<collectionCode id="ED2EF5C3BF4BC247CE29B004E4FB1A19" box="[881,899,1585,1608]" country="Chile" name="Departamento de Geologia, Universidad de Chile" pageId="68" pageNumber="221">R</collectionCode>
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e p o s i t o r y.
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<location id="8EE03BDDBF4BC247C97AB005E23D1A19" LSID="urn:lsid:plazi:treatment:0396DC10BF4BC245CEFCB316E47819F2:8EE03BDDBF4BC247C97AB005E23D1A19" box="[1058,1349,1584,1608]" country="Sweden" county="Swedish Museum of Natural History" municipality="Department of Palaeobiology" name="Palaeobotanical Collections" pageId="68" pageNumber="221" stateProvince="Stockholm">Palaeobotanical Collections</location>
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,
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<collectingMunicipality id="6BE4F77CBF4BC247C817B004E37B1A39" pageId="68" pageNumber="221">Department of Palaeobiology</collectingMunicipality>
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, the
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<collectingCounty id="62E1158ABF4BC247C96FB065E2BE1A39" box="[1079,1478,1616,1640]" pageId="68" pageNumber="221">Swedish Museum of Natural History</collectingCounty>
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,
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<collectingRegion id="49FBA3E4BF4BC247CE13B045E4B91AD9" box="[843,961,1648,1672]" country="Sweden" name="Stockholm" pageId="68" pageNumber="221">Stockholm</collectingRegion>
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,
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<collectingCountry id="F3282D96BF4BC247CE94B045E35C1AD9" box="[972,1060,1648,1672]" name="Sweden" pageId="68" pageNumber="221">Sweden</collectingCountry>
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</materialsCitation>
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.
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</paragraph>
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<paragraph id="8B806D06BF4BC247CE29B095E2161A89" blockId="68.[843,1481,1696,1752]" pageId="68" pageNumber="221">E t y m o l o g y. From Latin: pusillus, very small, referring to the very small size of the pollen grains.</paragraph>
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<paragraph id="8B806D06BF4BC247CE29B0DAE2B11B56" blockId="68.[843,1481,1775,1831]" box="[881,1481,1775,1799]" pageId="68" pageNumber="221">T y p e l o c a l i t y. Torres Vedras (NE of Forte de</paragraph>
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<paragraph id="8B806D06BF4BC247CE13B13AE3CE1B76" blockId="68.[843,1481,1775,1831]" box="[843,1206,1805,1831]" pageId="68" pageNumber="221">
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Forca;
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<geoCoordinate id="EE0B0BC1BF4BC247CECEB138E3661B77" box="[918,1054,1805,1830]" degrees="39" direction="north" minutes="06" orientation="latitude" pageId="68" pageNumber="221" precision="15" seconds="13" value="39.10361">39°06′13″ N</geoCoordinate>
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,
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<geoCoordinate id="EE0B0BC1BF4BC247C971B138E3D21B76" box="[1065,1194,1805,1831]" degrees="9" direction="west" minutes="14" orientation="longitude" pageId="68" pageNumber="221" precision="15" seconds="47" value="-9.246389">9°14′47″ W</geoCoordinate>
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).
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</paragraph>
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<paragraph id="8B806D06BF4BC247CE29B10BE4A61BC7" blockId="68.[843,1482,1854,1942]" pageId="68" pageNumber="221">T y p e s t r a t u m a n d a g e. Lower member of the Almargem Formation; Early Cretaceous (late Barremianearly Aptian).</paragraph>
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<paragraph id="8B806D06BF4BC247CE29B198E3B61B94" blockId="68.[881,1230,1965,1989]" box="[881,1230,1965,1989]" pageId="68" pageNumber="221">D i a g n o s i s. As for the genus.</paragraph>
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<paragraph id="8B806D06BF4BC247CE29B1E8E2B11BA5" blockId="68.[843,1481,2012,2069]" box="[881,1481,2012,2036]" pageId="68" pageNumber="221">D i m e n s i o n s. Diameter of pollen grains: about</paragraph>
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<paragraph id="8B806D06BF4BC247CE13B1C9E4CA1444" blockId="68.[843,1481,2012,2069]" box="[843,946,2044,2069]" pageId="68" pageNumber="221">9–12 µm.</paragraph>
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<caption id="DF403D8EBF4AC246CD25B16AE2D81475" ID-DOI="http://doi.org/10.5281/zenodo.5386351" ID-Zenodo-Dep="5386351" httpUri="https://zenodo.org/record/5386351/files/figure.png" pageId="69" pageNumber="222" startId="69.[125,206,1887,1908]" targetBox="[127,1440,151,1865]" targetPageId="69">
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<paragraph id="8B806D06BF4AC246CD25B16AE2D81475" blockId="69.[125,1440,1887,2084]" pageId="69" pageNumber="222">
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Text-fig. 44. Scanning electron microscope (SEM) images of monocolpate pollen of
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||
<taxonomicName id="4C3F1685BF4AC246CEBFB16AE3C71B25" authority="Friis & Crane & Pedersen, 2019" authorityName="Friis & Crane & Pedersen" authorityYear="2019" box="[999,1215,1887,1908]" class="Magnoliopsida" family="Chloranthaceae" genus="Juhaszia" kingdom="Plantae" order="Chloranthales" pageId="69" pageNumber="222" phylum="Tracheophyta" rank="species" species="portugallica" status="gen. et sp. nov.">
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<emphasis id="B94BB114BF4AC246CEBFB16AE3C71B25" bold="true" box="[999,1215,1887,1908]" italics="true" pageId="69" pageNumber="222">Juhaszia portugallica</emphasis>
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</taxonomicName>
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<taxonomicNameLabel id="A2780C6FBF4AC246C990B16AE21D1B25" box="[1224,1381,1887,1908]" pageId="69" pageNumber="222" rank="species">gen. et sp. nov.</taxonomicNameLabel>
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from a fragment of a pollen sac (a–e) and stamen fragment and pollen of
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<taxonomicName id="4C3F1685BF4AC246CE00B149E3621BC0" authority="Friis & Crane & Pedersen, 2019" authorityName="Friis & Crane & Pedersen" authorityYear="2019" box="[856,1050,1916,1937]" class="Magnoliopsida" family="Chloranthaceae" genus="Dictyozonia" kingdom="Plantae" order="Chloranthales" pageId="69" pageNumber="222" phylum="Tracheophyta" rank="species" species="pusilla" status="gen. et sp. nov.">
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<emphasis id="B94BB114BF4AC246CE00B149E3621BC0" bold="true" box="[856,1050,1916,1937]" italics="true" pageId="69" pageNumber="222">Dictyozonia pusilla</emphasis>
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</taxonomicName>
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||
<taxonomicNameLabel id="A2780C6FBF4AC246C97AB149E3B91BC0" box="[1058,1217,1916,1937]" pageId="69" pageNumber="222" rank="species">gen. et sp. nov.</taxonomicNameLabel>
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(f–k); Torres Vedras locality, Portugal. a) Holotype; fragment of pollen sac that yielded the pollen in (b–e); b) Proximal surface of pollen grain showing reticulate sculpture in the equatorial regions grading into more a continuous foveolate tectum at the proximal pole; c) Reticulum on the proximal surface showing smooth muri delimiting large and small luminae. Muri supported by numerous short columellae that are only loosely attached to the smooth surface of the foot layer; d) Distal surface of pollen grain showing the long colpus and reticulate sculpture with a distinctive pattern of large and small luminae; e) Pollen grain from which the reticulum has become
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</paragraph>
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</caption>
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<paragraph id="8B806D06BF49C245CDFEB6ADE5611EA0" blockId="70.[129,768,151,753]" pageId="70" pageNumber="223">
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D e s c r i p t i o n a n d r e m a r k s. The species is based on a fragment of a tetrasporangiate stamen (
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||
<figureCitation id="13047183BF49C245CFFBB68DE7DD1CA1" captionStart="Text-fig" captionStartId="69.[125,206,1887,1908]" captionTargetBox="[127,1440,151,1865]" captionTargetId="figure-17@69.[660,1444,643,1287]" captionTargetPageId="69" captionText="Text-fig. 44. Scanning electron microscope (SEM) images of monocolpate pollen of Juhaszia portugallica gen. et sp. nov. from a fragment of a pollen sac (a–e) and stamen fragment and pollen of Dictyozonia pusilla gen. et sp. nov. (f–k); Torres Vedras locality, Portugal. a) Holotype; fragment of pollen sac that yielded the pollen in (b–e); b) Proximal surface of pollen grain showing reticulate sculpture in the equatorial regions grading into more a continuous foveolate tectum at the proximal pole; c) Reticulum on the proximal surface showing smooth muri delimiting large and small luminae. Muri supported by numerous short columellae that are only loosely attached to the smooth surface of the foot layer; d) Distal surface of pollen grain showing the long colpus and reticulate sculpture with a distinctive pattern of large and small luminae; e) Pollen grain from which the reticulum has become" figureDoi="http://doi.org/10.5281/zenodo.5386351" httpUri="https://zenodo.org/record/5386351/files/figure.png" pageId="70" pageNumber="223">Text-fig. 44f</figureCitation>
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||
) with pollen in situ (
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<figureCitation id="13047183BF49C245CCDEB6EDE54A1CA1" box="[390,562,216,240]" captionStart="Text-fig" captionStartId="69.[125,206,1887,1908]" captionTargetBox="[127,1440,151,1865]" captionTargetId="figure-17@69.[660,1444,643,1287]" captionTargetPageId="69" captionText="Text-fig. 44. Scanning electron microscope (SEM) images of monocolpate pollen of Juhaszia portugallica gen. et sp. nov. from a fragment of a pollen sac (a–e) and stamen fragment and pollen of Dictyozonia pusilla gen. et sp. nov. (f–k); Torres Vedras locality, Portugal. a) Holotype; fragment of pollen sac that yielded the pollen in (b–e); b) Proximal surface of pollen grain showing reticulate sculpture in the equatorial regions grading into more a continuous foveolate tectum at the proximal pole; c) Reticulum on the proximal surface showing smooth muri delimiting large and small luminae. Muri supported by numerous short columellae that are only loosely attached to the smooth surface of the foot layer; d) Distal surface of pollen grain showing the long colpus and reticulate sculpture with a distinctive pattern of large and small luminae; e) Pollen grain from which the reticulum has become" figureDoi="http://doi.org/10.5281/zenodo.5386351" httpUri="https://zenodo.org/record/5386351/files/figure.png" pageId="70" pageNumber="223">
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||
Text-fig.
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||
<quantity id="4CC7C0E3BF49C245CCB2B6EDE56C1CA1" box="[490,532,216,240]" metricMagnitude="-2" metricUnit="kg" metricValue="4.4" pageId="70" pageNumber="223" unit="g" value="44.0">44g</quantity>
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–k
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</figureCitation>
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||
). The pollen grains were briefly described and illustrated earlier as pollen
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||
<typeStatus id="5484D3A4BF49C245CF89B6CDE5871D41" box="[721,767,248,272]" pageId="70" pageNumber="223">type</typeStatus>
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||
“B.4 monocolpate, psilate-reticulate pollen” (
|
||
<bibRefCitation id="EFAE10F7BF49C245CFDBB72DE7C21D01" author="Friis, E. M. & Pedersen, K. R. & Crane, P. R." pageId="70" pageNumber="223" pagination="259 - 296" refId="ref76722" refString="Friis, E. M., Pedersen, K. R., Crane, P. R. (1999): Early angiosperm diversification: the diversity of pollen associated with angiosperm reproductive structures in Early Cre- taceous floras from Portugal. - Annals of the Missouri Botanical Garden, 86: 259 - 296. https: // doi. org / 10.2307 / 2666179" type="journal article" year="1999">Friis et al. 1999</bibRefCitation>
|
||
), but the material was not formally named. The pollen grains are small, almost circular in equatorial outline, and monocolpate. The pollen wall is semitectate-reticulate in the equatorial region, and psilate to psilate-punctate in the polar regions (
|
||
<figureCitation id="13047183BF49C245CDBAB78DE6EA1D81" box="[226,402,440,464]" captionStart="Text-fig" captionStartId="69.[125,206,1887,1908]" captionTargetBox="[127,1440,151,1865]" captionTargetId="figure-17@69.[660,1444,643,1287]" captionTargetPageId="69" captionText="Text-fig. 44. Scanning electron microscope (SEM) images of monocolpate pollen of Juhaszia portugallica gen. et sp. nov. from a fragment of a pollen sac (a–e) and stamen fragment and pollen of Dictyozonia pusilla gen. et sp. nov. (f–k); Torres Vedras locality, Portugal. a) Holotype; fragment of pollen sac that yielded the pollen in (b–e); b) Proximal surface of pollen grain showing reticulate sculpture in the equatorial regions grading into more a continuous foveolate tectum at the proximal pole; c) Reticulum on the proximal surface showing smooth muri delimiting large and small luminae. Muri supported by numerous short columellae that are only loosely attached to the smooth surface of the foot layer; d) Distal surface of pollen grain showing the long colpus and reticulate sculpture with a distinctive pattern of large and small luminae; e) Pollen grain from which the reticulum has become" figureDoi="http://doi.org/10.5281/zenodo.5386351" httpUri="https://zenodo.org/record/5386351/files/figure.png" pageId="70" pageNumber="223">
|
||
Text-fig.
|
||
<quantity id="4CC7C0E3BF49C245CC12B78DE60C1D81" box="[330,372,440,464]" metricMagnitude="-2" metricUnit="kg" metricValue="4.4" pageId="70" pageNumber="223" unit="g" value="44.0">44g</quantity>
|
||
–k
|
||
</figureCitation>
|
||
). The reticulum forms a distinct band around the equator (
|
||
<figureCitation id="13047183BF49C245CCC7B7ECE5281DA0" box="[415,592,473,497]" captionStart="Text-fig" captionStartId="69.[125,206,1887,1908]" captionTargetBox="[127,1440,151,1865]" captionTargetId="figure-17@69.[660,1444,643,1287]" captionTargetPageId="69" captionText="Text-fig. 44. Scanning electron microscope (SEM) images of monocolpate pollen of Juhaszia portugallica gen. et sp. nov. from a fragment of a pollen sac (a–e) and stamen fragment and pollen of Dictyozonia pusilla gen. et sp. nov. (f–k); Torres Vedras locality, Portugal. a) Holotype; fragment of pollen sac that yielded the pollen in (b–e); b) Proximal surface of pollen grain showing reticulate sculpture in the equatorial regions grading into more a continuous foveolate tectum at the proximal pole; c) Reticulum on the proximal surface showing smooth muri delimiting large and small luminae. Muri supported by numerous short columellae that are only loosely attached to the smooth surface of the foot layer; d) Distal surface of pollen grain showing the long colpus and reticulate sculpture with a distinctive pattern of large and small luminae; e) Pollen grain from which the reticulum has become" figureDoi="http://doi.org/10.5281/zenodo.5386351" httpUri="https://zenodo.org/record/5386351/files/figure.png" pageId="70" pageNumber="223">
|
||
Text-fig.
|
||
<quantity id="4CC7C0E3BF49C245CF5EB7ECE5481DA0" box="[518,560,473,497]" metricMagnitude="-2" metricUnit="kg" metricValue="4.4" pageId="70" pageNumber="223" unit="g" value="44.0">44g</quantity>
|
||
, k
|
||
</figureCitation>
|
||
). The reticulum is heterobrochate with a narrow microreticulate to foveolate zone bordering the psilate regions of the distal and proximal poles. In the polar regions the tectum is psilate with a narrow punctate zone close to the colpus margin (
|
||
<figureCitation id="13047183BF49C245CFFBB46CE7DE1EC0" captionStart="Text-fig" captionStartId="69.[125,206,1887,1908]" captionTargetBox="[127,1440,151,1865]" captionTargetId="figure-17@69.[660,1444,643,1287]" captionTargetPageId="69" captionText="Text-fig. 44. Scanning electron microscope (SEM) images of monocolpate pollen of Juhaszia portugallica gen. et sp. nov. from a fragment of a pollen sac (a–e) and stamen fragment and pollen of Dictyozonia pusilla gen. et sp. nov. (f–k); Torres Vedras locality, Portugal. a) Holotype; fragment of pollen sac that yielded the pollen in (b–e); b) Proximal surface of pollen grain showing reticulate sculpture in the equatorial regions grading into more a continuous foveolate tectum at the proximal pole; c) Reticulum on the proximal surface showing smooth muri delimiting large and small luminae. Muri supported by numerous short columellae that are only loosely attached to the smooth surface of the foot layer; d) Distal surface of pollen grain showing the long colpus and reticulate sculpture with a distinctive pattern of large and small luminae; e) Pollen grain from which the reticulum has become" figureDoi="http://doi.org/10.5281/zenodo.5386351" httpUri="https://zenodo.org/record/5386351/files/figure.png" pageId="70" pageNumber="223">Text-fig. 44j</figureCitation>
|
||
). Muri are smooth with slightly rounded profile, and are supported by short, scattered columellae. The colpus extends for the full length of the grains and has a distinct margin and verrucate membrane (
|
||
<figureCitation id="13047183BF49C245CC31B4ECE5751EA0" box="[361,525,729,753]" captionStart="Text-fig" captionStartId="69.[125,206,1887,1908]" captionTargetBox="[127,1440,151,1865]" captionTargetId="figure-17@69.[660,1444,643,1287]" captionTargetPageId="69" captionText="Text-fig. 44. Scanning electron microscope (SEM) images of monocolpate pollen of Juhaszia portugallica gen. et sp. nov. from a fragment of a pollen sac (a–e) and stamen fragment and pollen of Dictyozonia pusilla gen. et sp. nov. (f–k); Torres Vedras locality, Portugal. a) Holotype; fragment of pollen sac that yielded the pollen in (b–e); b) Proximal surface of pollen grain showing reticulate sculpture in the equatorial regions grading into more a continuous foveolate tectum at the proximal pole; c) Reticulum on the proximal surface showing smooth muri delimiting large and small luminae. Muri supported by numerous short columellae that are only loosely attached to the smooth surface of the foot layer; d) Distal surface of pollen grain showing the long colpus and reticulate sculpture with a distinctive pattern of large and small luminae; e) Pollen grain from which the reticulum has become" figureDoi="http://doi.org/10.5281/zenodo.5386351" httpUri="https://zenodo.org/record/5386351/files/figure.png" pageId="70" pageNumber="223">Text-fig. 44h–j</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="8B806D06BF49C245CDFEB53CE50218B3" blockId="70.[129,768,777,1443]" pageId="70" pageNumber="223">
|
||
A f f i n i t y a n d o t h e r o c c u r r e n c e s.
|
||
<taxonomicName id="4C3F1685BF49C245CFF7B53CE66E1F10" authorityName="Friis & Crane & Pedersen" authorityYear="2019" class="Magnoliopsida" family="Chloranthaceae" genus="Dictyozonia" kingdom="Plantae" order="Chloranthales" pageId="70" pageNumber="223" phylum="Tracheophyta" rank="species" species="pusilla">
|
||
<emphasis id="B94BB114BF49C245CFF7B53CE66E1F10" italics="true" pageId="70" pageNumber="223">Dictyozonia pusilla</emphasis>
|
||
</taxonomicName>
|
||
is only known from the Torres Vedras mesofossil flora. A probably related pollen
|
||
<typeStatus id="5484D3A4BF49C245CFC8B57CE5C61F30" box="[656,702,841,865]" pageId="70" pageNumber="223">type</typeStatus>
|
||
with psilate polar regions and a semitectate equatorial region was observed in a small flower fragment from the Buarcos mesofossil flora (Pollen
|
||
<typeStatus id="5484D3A4BF49C245CCC2B59FE6B71F93" box="[410,463,938,962]" pageId="70" pageNumber="223">Type</typeStatus>
|
||
B.
|
||
<quantity id="4CC7C0E3BF49C245CCADB59CE55D1F90" box="[501,549,937,961]" metricMagnitude="-2" metricUnit="m" metricValue="7.62" pageId="70" pageNumber="223" unit="in" value="3.0">3 in</quantity>
|
||
<bibRefCitation id="EFAE10F7BF49C245CF6BB59CE58B1F90" author="Friis, E. M. & Pedersen, K. R. & Crane, P. R." box="[563,755,937,961]" pageId="70" pageNumber="223" pagination="259 - 296" refId="ref76722" refString="Friis, E. M., Pedersen, K. R., Crane, P. R. (1999): Early angiosperm diversification: the diversity of pollen associated with angiosperm reproductive structures in Early Cre- taceous floras from Portugal. - Annals of the Missouri Botanical Garden, 86: 259 - 296. https: // doi. org / 10.2307 / 2666179" type="journal article" year="1999">Friis et al. 1999</bibRefCitation>
|
||
). However, in the Buarcos specimen both monocolpate and trichotomocolpate pollen occur in the same anther and the tectum in the equatorial region is microreticulate to foveolate. Pollen grains with extended psilate polar regions and reticulate equatorial regions have been described from the Early Cretaceous of the Potomac Group by
|
||
<bibRefCitation id="EFAE10F7BF49C245CFDCB25FE66718F3" author="Walker, J. W. & Walker, A. G." pageId="70" pageNumber="223" pagination="203 - 217" refId="ref84179" refString="Walker, J. W., Walker, A. G. (1986): Ultrastructure of Early Cretaceous angiosperm pollen and its evolutionary im- plications. - In: Blackmore, S., Ferguson, I. K. (eds), Pollen and Spores: Form and Function. Academic Press, London, pp. 203 - 217." type="book chapter" year="1986">Walker and Walker (1986)</bibRefCitation>
|
||
who suggested an affinity for these grains with extant monocots, but so far we have been unable to place
|
||
<taxonomicName id="4C3F1685BF49C245CDE7B2FEE6E818B3" authorityName="Friis & Crane & Pedersen" authorityYear="2019" box="[191,400,1226,1250]" class="Magnoliopsida" family="Chloranthaceae" genus="Dictyozonia" kingdom="Plantae" order="Chloranthales" pageId="70" pageNumber="223" phylum="Tracheophyta" rank="species" species="pusilla">
|
||
<emphasis id="B94BB114BF49C245CDE7B2FEE6E818B3" box="[191,400,1226,1250]" italics="true" pageId="70" pageNumber="223">Dictyozonia pusilla</emphasis>
|
||
</taxonomicName>
|
||
in any modern taxon.
|
||
</paragraph>
|
||
<paragraph id="8B806D06BF49C245CDFEB2DEE47819F2" blockId="70.[129,768,777,1443]" pageId="70" pageNumber="223">
|
||
Very small pollen grains somewhat comparable to those of
|
||
<taxonomicName id="4C3F1685BF49C245CDBDB33EE6C11973" authorityName="Friis & Crane & Pedersen" authorityYear="2019" box="[229,441,1290,1314]" class="Magnoliopsida" family="Chloranthaceae" genus="Dictyozonia" kingdom="Plantae" order="Chloranthales" pageId="70" pageNumber="223" phylum="Tracheophyta" rank="species" species="pusilla">
|
||
<emphasis id="B94BB114BF49C245CDBDB33EE6C11973" box="[229,441,1290,1314]" italics="true" pageId="70" pageNumber="223">Dictyozonia pusilla</emphasis>
|
||
</taxonomicName>
|
||
with a graded reticulum and foveolate to psilate proximal face were also described from the Albian of
|
||
<collectingCountry id="F3282D96BF49C245CC4DB37EE62D1932" box="[277,341,1355,1379]" name="Egypt" pageId="70" pageNumber="223">Egypt</collectingCountry>
|
||
as Reticoll-Smallpatch and Crochetret- Baldap (
|
||
<bibRefCitation id="EFAE10F7BF49C245CD81B35EE62319D2" author="Penny, J. H. J." box="[217,347,1387,1411]" pageId="70" pageNumber="223" pagination="31 - 88" refId="ref81495" refString="Penny, J. H. J. (1991): Early Cretaceous angiosperm pollen from the borehole Mersa Matruh 1, North West Desert, Egypt. - Palaeontographica, B, 222: 31 - 88." type="journal article" year="1991">Penny 1991</bibRefCitation>
|
||
), but none of these has a similar narrow reticulate equatorial band and psilate areas on the distal face.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |