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121 lines
14 KiB
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<document ID-DOI="10.5252/geodiversitas2021v43a11" ID-GBIF-Dataset="fc56a00d-cf6b-4fda-aa56-d0492e4781cb" ID-ISSN="1638-9395" ID-Zenodo-Dep="4891107" ID-ZooBank="urn:lsid:zoobank.org:pub:07D1F5A8-98E2-40F1-A716-D25CB975EA4C" checkinTime="1622490877458" checkinUser="felipe" docAuthor="Steurbaut, Etienne & Nolf, Dirk" docDate="2021" docId="1D2F9F2B9A34FFC0FF70FE03DDDBBEC4" docLanguage="en" docName="Geodiversitas.43.11.311-363.pdf" docOrigin="Geodiversitas 43 (11)" docStyle="DocumentStyle:F830B10FF475E64C1F1601E3B32DDC00.3:Geodiversitas.2018-.journal_article" docStyleId="F830B10FF475E64C1F1601E3B32DDC00" docStyleName="Geodiversitas.2018-.journal_article" docStyleVersion="3" docTitle="Discoaster wemmelensis Achuthan & Stradner 1969" docType="treatment" docVersion="5" lastPageNumber="346" masterDocId="E116E7539A11FFE5FFDBFFFADF3DBA1F" masterDocTitle="The Mont-des-Récollets section (N France): a key site for the Ypresian-Lutetian transition at mid-latitudes - reassessment of the boundary criterion for the base- Lutetian GSSP" masterLastPageNumber="363" masterPageNumber="311" pageNumber="346" updateTime="1632098410930" updateUser="ExternalLinkService" zenodo-license-document="CC0-1.0" zenodo-license-figures="CC0-1.0">
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<mods:titleInfo>
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<mods:title>The Mont-des-Récollets section (N France): a key site for the Ypresian-Lutetian transition at mid-latitudes - reassessment of the boundary criterion for the base- Lutetian GSSP</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Steurbaut, Etienne</mods:namePart>
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<mods:affiliation>Royal Belgian Institute of Natural Sciences, OD Earth and History of Life, Vautierstraat 29, B- 1000 Brussel (Belgium) and Department of Earth, and Environmental Sciences, KU Leuven, Celestijnenlaan 200 E, B- 3001 Leuven (Belgium)</mods:affiliation>
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<mods:nameIdentifier type="email">etienne.steurbaut@naturalsciences.be</mods:nameIdentifier>
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</mods:name>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Nolf, Dirk</mods:namePart>
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<mods:affiliation>Royal Belgian Institute of Natural Sciences, OD Earth and History of Life, Vautierstraat 29, B- 1000 Brussel (Belgium)</mods:affiliation>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:titleInfo>
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<mods:title>Geodiversitas</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2021</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2021-05-25</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>43</mods:number>
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</mods:detail>
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<mods:detail type="issue">
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<mods:number>11</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>311</mods:start>
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<mods:end>363</mods:end>
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</mods:extent>
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</mods:part>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">10.5252/geodiversitas2021v43a11</mods:identifier>
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<mods:identifier type="GBIF-Dataset">fc56a00d-cf6b-4fda-aa56-d0492e4781cb</mods:identifier>
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<mods:identifier type="ISSN">1638-9395</mods:identifier>
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<mods:identifier type="Zenodo-Dep">4891107</mods:identifier>
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<mods:identifier type="ZooBank">urn:lsid:zoobank.org:pub:07D1F5A8-98E2-40F1-A716-D25CB975EA4C</mods:identifier>
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<treatment ID-DOI="http://doi.org/10.5281/zenodo.4891190" ID-GBIF-Taxon="182482769" ID-Zenodo-Dep="4891190" LSID="urn:lsid:plazi:treatment:1D2F9F2B9A34FFC0FF70FE03DDDBBEC4" httpUri="http://treatment.plazi.org/id/1D2F9F2B9A34FFC0FF70FE03DDDBBEC4" lastPageNumber="346" pageId="37" pageNumber="346">
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<subSubSection box="[171,736,505,532]" pageId="37" pageNumber="346" type="nomenclature">
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<paragraph blockId="37.[171,736,505,564]" box="[171,736,505,532]" pageId="37" pageNumber="346">
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<taxonomicName authority="Achuthan & Stradner, 1969" authorityName="Achuthan & Stradner" authorityYear="1969" box="[171,736,505,532]" class="Prymnesiophyceae" family="Coccolithaceae" genus="Discoaster" higherTaxonomySource="GBIF" kingdom="Chromista" order="Coccosphaerales" pageId="37" pageNumber="346" phylum="Haptophyta" rank="species" species="wemmelensis">
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<emphasis bold="true" box="[171,427,505,532]" italics="true" pageId="37" pageNumber="346">Discoaster wemmelensis</emphasis>
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<bibRefCitation author="ACHUTHAN M. V. & STRADNER H." box="[433,736,505,531]" pageId="37" pageNumber="346" pagination="1 - 13" refId="ref36419" refString="ACHUTHAN M. V. & STRADNER H. 1969. - Calcareous nannoplankton from the Wemmelian stratotype, in BRONNIMANN P. & RENZ H. H. (eds), Proceedings of the First International Conference on Planktonic Microfossils, Geneva 1967. Brill, Leiden, Geneva 1: 1 - 13." type="journal article" year="1969">Achuthan & Stradner, 1969</bibRefCitation>
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</taxonomicName>
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</paragraph>
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</subSubSection>
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<subSubSection box="[382,525,538,564]" pageId="37" pageNumber="346" type="description">
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<paragraph blockId="37.[171,736,505,564]" box="[382,525,538,564]" pageId="37" pageNumber="346">
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(
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<figureCitation box="[391,467,538,564]" captionStart="FIG" captionStartId="34.[132,142,1690,1707]" captionTargetBox="[242,1344,215,1682]" captionTargetId="figure-29@34.[241,794,765,1321]" captionTargetPageId="34" captionText="FIG. 18. — New or less known calcareous nannofossil taxa from the Eocene of the Mont-des-Récollets and other localities in Belgium;a, b, c, views of the same specimen, in transmitted light or cross-polarized light or vice versa, and in different positions with respect to the polarisation directions. Numbers (e.g. IRSNB bXXXX) refer to the collections of the Royal Belgian Institute of Natural Sciences (Brussels).Pars 1: A-D, Braarudosphaera stylifera Troelsen & Quadros,1971,Mont-des-Récollets,122.85 m (IRSNB b7093,b7094,b7096);A, wm = 13 µm;B, wm = 12 µm;D, wm = 14.5 µm;C, Mont-des-Récollets,124.10 m (IRSNB b7095),wm = 13 µm;E, Lanternithus minutus Stradner, 1962, Mont-des-Récollets, 122.85 m, l = 5.6 µm (IRSNB b7097); F, G, Martiniaster cecellanoriae n. sp.: F, Chaumont-en-Vexin, sample 11, 0.55 m above base of the Lutetian, paratype,d = 13 µm (IRSNB b7098);G, Leuven BH,23.70 m depth, holotype,d = 14 µm (IRSNB b7099);H, Discoaster praebifax Wei & Wise,1989, Mont-des-Récollets,116.45 m, d = 7 µm (IRSNB b7100);I-M, Discoaster sublodoensis Bramlette & Sullivan,1961,Mont-des-Récollets,116.45 m (IRSNB b7101,b7102); J, d = 15.2 µm; I, d = 16 µm; K, Mont-des-Récollets, 118.35 m, d = 11.6 µm (IRSNB b7103); L, Vossem, otolith sample Nolf 1974, d = 7 µm (IRSNB b7104); M, Gisors, Bassin de Paris,sample 3,d = 14 µm (IRSNB b7105);N, Martiniaster fragilis (Martini,1961), Mont-des-Récollets,122.85 m, wm = 12 µm (IRSNB b7106);O-R, Discoaster wemmelensis Achuthan & Stradner,1969;O, Mont-des-Récollets, 122.85 m, d = 5.6 µm (IRSNB b7107); P-R, Vossem,otolith sample Nolf 1974 (IRSNB b7108, b7109, b7110);P, d = 5.3 µm; Q, d = 4.4 µm; R, d = 4.3 µm;S-V, Blackites minusculus n. sp.; S, Mont-des-Récollets,117.46 m, paratype, l = 8.8 µm (IRSNB b7111); T-V, Vossem, otolith sample Nolf 1974; T, U, paratypes (IRSNB b7112, b7113); T, I = 8.2 µm;U, I = 7.2 µm;V, holotype,I = 8.56 µm (IRSNB b7114); W-Y, Trochoaster nodosus n. sp.; W, Chaumont-en-Vexin,sample 16, 0.80 m above base of the Lutetian,holotype, d = 16 µm (IRSNB b7115);X, Vilvoorde BH, 5.80 m depth,paratype,d = 15 µm (IRSNB b7116); Y, Oedelem BH, 11.70 m depth, paratype, d = 15 µm (IRSNB b7117); Z-AA, Sphenolithus recolletensis n. sp.; Z, Mont-des-Récollets, 116.45 m, paratype, htot = 20 µm (IRSNB b7118);AA, Mont-des-Récollets, 117.46 m, holotype (a, c, parallel to the polarization directions;b, at 45°), htot = 11.4 µm (IRSNB b7119)." figureDoi="http://doi.org/10.5281/zenodo.4891140" httpUri="https://zenodo.org/record/4891140/files/figure.png" pageId="37" pageNumber="346">Fig. 18</figureCitation>
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O-R)
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</paragraph>
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</subSubSection>
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<subSubSection pageId="37" pageNumber="346" type="reference_group">
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<paragraph blockId="37.[131,775,595,646]" pageId="37" pageNumber="346">
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<treatmentCitationGroup pageId="37" pageNumber="346">
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<treatmentCitation author="ACHUTHAN M. V. & STRADNER H." box="[132,644,595,619]" page="5" pageId="37" pageNumber="346" year="1969">
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<taxonomicName authority="Achuthan & Stradner, 1969: 5" authorityName="Achuthan & Stradner" authorityPageNumber="5" authorityYear="1969" box="[132,644,595,619]" class="Prymnesiophyceae" family="Coccolithaceae" genus="Discoaster" higherTaxonomySource="GBIF" kingdom="Chromista" order="Coccosphaerales" pageId="37" pageNumber="346" phylum="Haptophyta" rank="species" species="wemmelensis">
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<emphasis box="[132,348,595,619]" italics="true" pageId="37" pageNumber="346">Discoaster wemmelensis</emphasis>
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<bibRefCitation author="ACHUTHAN M. V. & STRADNER H." box="[350,644,595,619]" pageId="37" pageNumber="346" pagination="1 - 13" refId="ref36419" refString="ACHUTHAN M. V. & STRADNER H. 1969. - Calcareous nannoplankton from the Wemmelian stratotype, in BRONNIMANN P. & RENZ H. H. (eds), Proceedings of the First International Conference on Planktonic Microfossils, Geneva 1967. Brill, Leiden, Geneva 1: 1 - 13." type="journal article" year="1969">Achuthan & Stradner, 1969: 5</bibRefCitation>
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</taxonomicName>
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</treatmentCitation>
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, 6, text-fig. 2; pl. 4, figs 3-4.
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</treatmentCitationGroup>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="37" pageNumber="346" type="distribution">
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<paragraph blockId="37.[130,777,670,1071]" pageId="37" pageNumber="346">
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DISTRIBUTION. —
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<taxonomicName authorityName="Achuthan & Stradner" authorityYear="1969" box="[320,471,670,694]" class="Prymnesiophyceae" family="Coccolithaceae" genus="Discoaster" higherTaxonomySource="GBIF" kingdom="Chromista" order="Coccosphaerales" pageId="37" pageNumber="346" phylum="Haptophyta" rank="species" species="wemmelensis">
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<emphasis box="[320,471,670,694]" italics="true" pageId="37" pageNumber="346">D. wemmelensis</emphasis>
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</taxonomicName>
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is consistently recorded in Lutetian nannofossil assemblages worldwide, although generally in low concentrations (Perch-Nielsen 1985;
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<bibRefCitation author="AUBRY M. - P." box="[533,650,724,748]" pageId="37" pageNumber="346" pagination="267 - 334" refId="ref36645" refString="AUBRY M. - P. 1986. - Paleogene calcareous nannoplankton biostratigraphy of northwestern Europe. Palaeogeography, Palaeoclimatology, Palaeoecology 55: 267 - 334. https: // doi. org / 10.1016 / 0031 - 0182 (86) 90154 - 9" type="journal article" year="1986">Aubry 1986</bibRefCitation>
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;
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<bibRefCitation author="VAROL O." box="[661,769,724,748]" pageId="37" pageNumber="346" refId="ref44755" refString="VAROL O. 1998. - Palaeogene, in BOWN P. R. (ed.), Calcareous Nannofossil Biostratigraphy. Kluwer Academic Publishers: 200 - 224 (British Micropalaeontological Society Publications Series; 7)." type="journal volume" year="1998">Varol 1998</bibRefCitation>
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;
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<bibRefCitation author="TORI F. & MONECHI S." box="[132,347,751,775]" pageId="37" pageNumber="346" pagination="293 - 307" refId="ref44321" refString="TORI F. & MONECHI S. 2013. - Lutetian calcareous nannofossil events in the Agost section (Spain): Implications toward a revision of the Middle Eocene biomagnetostratigraphy. Lethaia 46: 293 - 307. https: // doi. org / 10.1111 / let. 12008" type="journal article" year="2013">Tori & Monechi 2013</bibRefCitation>
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;
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<bibRefCitation author="FRANCESCHI M. & PENASA L. & COCCIONI R. & GATTACCECA J. & SMIT J. & CASCELLA A. & MARIANI S. & MONTANARI A." box="[357,564,751,775]" pageId="37" pageNumber="346" pagination="33 - 46" refId="ref38878" refString="FRANCESCHI M., PENASA L., COCCIONI R., GATTACCECA J., SMIT J., CASCELLA A., MARIANI S. & MONTANARI A. 2015. - Terrestrial Laser Scanner imaging for the cyclostratigraphy and astronomical tuning of the Ypresian-Lutetian pelagic section of Smirra (Umbria-Marche Basin, Italy). Palaeogeography, Palaeoclimatology, Palaeoecology 440: 33 - 46 (+ Supplementary material). https: // doi. org / 10.1016 / j. palaeo. 2015.08.027" type="journal article" year="2015">
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Franceschi
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<emphasis box="[464,510,751,775]" italics="true" pageId="37" pageNumber="346">et al.</emphasis>
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2015
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</bibRefCitation>
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). It occurs in very low numbers at the Mont-des-Récollets, from the base of the
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<collectingRegion box="[704,773,778,802]" country="Belgium" name="Region de Bruxelles-Capitale" pageId="37" pageNumber="346">Brussel</collectingRegion>
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Sand Formation (its LO is at the base of Unit B1, lower NP14) up to the base of the Wemmel Sand Member (middle NP15). A few isolated specimens have been recorded slightly earlier at the top of the Aalter Sand Formation in boreholes north of the Mont-des- Récollets, but not at the Mont-des-Récollets itself (
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<quantity box="[629,668,912,936]" metricMagnitude="-2" metricUnit="m" metricValue="5.08" pageId="37" pageNumber="346" unit="in" value="2.0">2 in</quantity>
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the Vlakte van de Raan borehole and
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<specimenCount box="[392,502,939,963]" pageId="37" pageNumber="346" type="generic">1 specimen</specimenCount>
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in the Oedelem borehole, a few meters above the base of NP14 as defined herein). This might not correspond to its total range, as in
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<collectingCountry box="[451,532,993,1017]" name="Belgium" pageId="37" pageNumber="346">Belgium</collectingCountry>
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<taxonomicName authorityName="Achuthan & Stradner" authorityYear="1969" box="[537,683,993,1017]" class="Prymnesiophyceae" family="Coccolithaceae" genus="Discoaster" higherTaxonomySource="GBIF" kingdom="Chromista" order="Coccosphaerales" pageId="37" pageNumber="346" phylum="Haptophyta" rank="species" species="wemmelensis">
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<emphasis box="[537,683,993,1017]" italics="true" pageId="37" pageNumber="346">D. wemmelensis</emphasis>
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</taxonomicName>
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is known to occur throughout the Wemmel Sand Member (middle NP15) up to the Ursel Clay Member (base of NP16) (Steurbaut 1986).
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</paragraph>
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</subSubSection>
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<subSubSection pageId="37" pageNumber="346" type="discussion">
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<paragraph blockId="37.[132,777,1120,1243]" box="[132,262,1120,1146]" pageId="37" pageNumber="346">DISCUSSION</paragraph>
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<paragraph blockId="37.[132,777,1120,1243]" pageId="37" pageNumber="346">
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This small (d =
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<emphasis box="[313,330,1153,1178]" italics="true" pageId="37" pageNumber="346">c.</emphasis>
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<quantity box="[337,398,1152,1179]" metricMagnitude="-3" metricUnit="m" metricValue="5.0" pageId="37" pageNumber="346" unit="mm" value="5.0">5 µm</quantity>
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) discoaster with serrate outline is marked by two superimposed cycles of elements, consisting of 20 to 30 wedge-shaped rays, and lacks a central knob.
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |