226 lines
31 KiB
XML
226 lines
31 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/phytokeys.156.54175" ID-GBIF-Dataset="05cafb6c-7551-4d94-a925-f6659d277dcf" ID-PMC="PMC7456426" ID-Pensoft-Pub="1314-2003-156-81" ID-Pensoft-UUID="81BD8602478558B5A24CE462B0574555" ID-PubMed="32913410" ModsDocID="1314-2003-156-81" checkinTime="1598112893941" checkinUser="pensoft" docAuthor="Pujana, Roberto R., Wilf, Peter & Gandolfo, Maria A." docDate="2020" docId="06199D57C35055ED8417736AABFE0EDD" docLanguage="en" docName="PhytoKeys 156: 81-102" docOrigin="PhytoKeys 156" docSource="http://dx.doi.org/10.3897/phytokeys.156.54175" docTitle="Protophyllocladoxylon francisiae Pujana, Santillana & Marenssi" docType="treatment" docVersion="4" id="81BD8602478558B5A24CE462B0574555" lastPageNumber="81" masterDocId="81BD8602478558B5A24CE462B0574555" masterDocTitle="Conifer wood assemblage dominated by Podocarpaceae, early Eocene of Laguna del Hunco, central Argentinean Patagonia" masterLastPageNumber="102" masterPageNumber="81" pageNumber="81" updateTime="1668139957736" updateUser="ExternalLinkService">
|
|
<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
|
|
<mods:titleInfo>
|
|
<mods:title>Conifer wood assemblage dominated by Podocarpaceae, early Eocene of Laguna del Hunco, central Argentinean Patagonia</mods:title>
|
|
</mods:titleInfo>
|
|
<mods:name type="personal">
|
|
<mods:role>
|
|
<mods:roleTerm>Author</mods:roleTerm>
|
|
</mods:role>
|
|
<mods:namePart>Pujana, Roberto R.</mods:namePart>
|
|
<mods:affiliation>Museo Argentino de Ciencias Naturales, Ciudad de Buenos Aires 1405, Argentina</mods:affiliation>
|
|
<mods:nameIdentifier type="orcid">https://orcid.org/0000-0001-8006-3332</mods:nameIdentifier>
|
|
<mods:nameIdentifier type="email">rpujana@gmail.com</mods:nameIdentifier>
|
|
</mods:name>
|
|
<mods:name type="personal">
|
|
<mods:role>
|
|
<mods:roleTerm>Author</mods:roleTerm>
|
|
</mods:role>
|
|
<mods:namePart>Wilf, Peter</mods:namePart>
|
|
<mods:affiliation>Department of Geosciences and Earth and Environmental Systems Institute, Pennsylvania State University, University Park PA 16802, USA</mods:affiliation>
|
|
<mods:nameIdentifier type="orcid">https://orcid.org/0000-0001-6813-1937</mods:nameIdentifier>
|
|
</mods:name>
|
|
<mods:name type="personal">
|
|
<mods:role>
|
|
<mods:roleTerm>Author</mods:roleTerm>
|
|
</mods:role>
|
|
<mods:namePart>Gandolfo, Maria A.</mods:namePart>
|
|
<mods:affiliation>LH Bailey Hortorium, Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14850, USA</mods:affiliation>
|
|
</mods:name>
|
|
<mods:typeOfResource>text</mods:typeOfResource>
|
|
<mods:relatedItem type="host">
|
|
<mods:titleInfo>
|
|
<mods:title>PhytoKeys</mods:title>
|
|
</mods:titleInfo>
|
|
<mods:part>
|
|
<mods:date>2020</mods:date>
|
|
<mods:detail type="volume">
|
|
<mods:number>156</mods:number>
|
|
</mods:detail>
|
|
<mods:extent unit="page">
|
|
<mods:start>81</mods:start>
|
|
<mods:end>102</mods:end>
|
|
</mods:extent>
|
|
</mods:part>
|
|
</mods:relatedItem>
|
|
<mods:location>
|
|
<mods:url>http://dx.doi.org/10.3897/phytokeys.156.54175</mods:url>
|
|
</mods:location>
|
|
<mods:classification>journal article</mods:classification>
|
|
<mods:identifier type="DOI">http://dx.doi.org/10.3897/phytokeys.156.54175</mods:identifier>
|
|
<mods:identifier type="Pensoft-Pub">1314-2003-156-81</mods:identifier>
|
|
<mods:identifier type="Pensoft-UUID">81BD8602478558B5A24CE462B0574555</mods:identifier>
|
|
</mods:mods>
|
|
<treatment ID-GBIF-Taxon="167292898" LSID="urn:lsid:plazi:treatment:06199D57C35055ED8417736AABFE0EDD" httpUri="http://treatment.plazi.org/id/06199D57C35055ED8417736AABFE0EDD" lastPageNumber="81" pageId="0" pageNumber="81">
|
|
<subSubSection pageId="0" pageNumber="81" type="nomenclature">
|
|
<paragraph pageId="0" pageNumber="81">
|
|
<taxonomicName LSID="06199D57-C350-55ED-8417-736AABFE0EDD" authority="Pujana, Santillana & Marenssi" class="Pinopsida" family="Podocarpaceae" genus="Protophyllocladoxylon" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Protophyllocladoxylon francisiae" order="Pinales" pageId="0" pageNumber="81" phylum="Tracheophyta" rank="species" species="francisiae">Protophyllocladoxylon francisiae Pujana, Santillana & Marenssi</taxonomicName>
|
|
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Protophyllocladoxylon francisiae, MPEF-Pb 10694: A Growth rings of type D (transverse section, TS) B detail of a growth ring of type D boundary (TS) C opposite (arrowheads) intertracheary radial pits (radial longitudinal section, RLS) D alternate (arrowheads) intertracheary radial pits (RLS) E and F cross-fields (RLS) G wall alteration of the secondary walls of tracheids (tangential longitudinal section, TLS) H uniseriate rays (TLS) I uniseriate rays (TLS). Scale bars: 5 mm (A); 500 μm (B); 50 μm (C, D, E, F, G); 100 μm (H); 200 μm (I)." figureDoi="10.3897/phytokeys.156.54175.figure2" httpUri="https://binary.pensoft.net/fig/444202" pageId="0" pageNumber="81">Figure 2A-F</figureCitation>
|
|
</paragraph>
|
|
</subSubSection>
|
|
<subSubSection pageId="0" pageNumber="81" type="materials_examined">
|
|
<paragraph pageId="0" pageNumber="81">Studied material.</paragraph>
|
|
<paragraph pageId="0" pageNumber="81">MPEF-Pb 10694.</paragraph>
|
|
</subSubSection>
|
|
<subSubSection pageId="0" pageNumber="81" type="locality">
|
|
<paragraph pageId="0" pageNumber="81">Locality.</paragraph>
|
|
<paragraph pageId="0" pageNumber="81">
|
|
LU2 at Laguna del Hunco (Fig.
|
|
<figureCitation captionStart="Figure 1" captionStartId="F1" captionText="Figure 1. Location map and satellite images (Instituto Geografico Nacional de la Republica Argentina, upper, and Google, CNES / Airbus, below) showing the Laguna del Hunco section and sampling locations. Scale in the satellite image below (tilted) varies across the map." figureDoi="10.3897/phytokeys.156.54175.figure1" httpUri="https://binary.pensoft.net/fig/444201" pageId="0" pageNumber="81">1</figureCitation>
|
|
, Table
|
|
<tableCitation captionStart="Table 1" captionStartId="T1" captionText="Table 1. Geographical coordinates of the localities where the fossils were collected." httpUri="http://table.plazi.org/id/FE0E2F0754B3B033A5E82964E8BDEA5E" pageId="0" pageNumber="81" tableUuid="FE0E2F0754B3B033A5E82964E8BDEA5E">1</tableCitation>
|
|
), Chubut Province, Argentina.
|
|
</paragraph>
|
|
</subSubSection>
|
|
<subSubSection pageId="0" pageNumber="81" type="stratigraphic provenance">
|
|
<paragraph pageId="0" pageNumber="81">Stratigraphic provenance.</paragraph>
|
|
<paragraph pageId="0" pageNumber="81">Tufolitas Laguna del Hunco, Huitrera Formation (Ypresian, early Eocene).</paragraph>
|
|
</subSubSection>
|
|
<subSubSection pageId="0" pageNumber="81" type="description">
|
|
<paragraph pageId="0" pageNumber="81">Description.</paragraph>
|
|
<paragraph pageId="0" pageNumber="81">
|
|
Growth ring boundaries are distinct (Fig.
|
|
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Protophyllocladoxylon francisiae, MPEF-Pb 10694: A Growth rings of type D (transverse section, TS) B detail of a growth ring of type D boundary (TS) C opposite (arrowheads) intertracheary radial pits (radial longitudinal section, RLS) D alternate (arrowheads) intertracheary radial pits (RLS) E and F cross-fields (RLS) G wall alteration of the secondary walls of tracheids (tangential longitudinal section, TLS) H uniseriate rays (TLS) I uniseriate rays (TLS). Scale bars: 5 mm (A); 500 μm (B); 50 μm (C, D, E, F, G); 100 μm (H); 200 μm (I)." figureDoi="10.3897/phytokeys.156.54175.figure2" httpUri="https://binary.pensoft.net/fig/444202" pageId="0" pageNumber="81">2A, B</figureCitation>
|
|
), latewood with 1-3 rows of tracheids (Fig.
|
|
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Protophyllocladoxylon francisiae, MPEF-Pb 10694: A Growth rings of type D (transverse section, TS) B detail of a growth ring of type D boundary (TS) C opposite (arrowheads) intertracheary radial pits (radial longitudinal section, RLS) D alternate (arrowheads) intertracheary radial pits (RLS) E and F cross-fields (RLS) G wall alteration of the secondary walls of tracheids (tangential longitudinal section, TLS) H uniseriate rays (TLS) I uniseriate rays (TLS). Scale bars: 5 mm (A); 500 μm (B); 50 μm (C, D, E, F, G); 100 μm (H); 200 μm (I)." figureDoi="10.3897/phytokeys.156.54175.figure2" httpUri="https://binary.pensoft.net/fig/444202" pageId="0" pageNumber="81">2B</figureCitation>
|
|
). Tracheids are roundish to polygonal as seen in transverse section (Fig.
|
|
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Protophyllocladoxylon francisiae, MPEF-Pb 10694: A Growth rings of type D (transverse section, TS) B detail of a growth ring of type D boundary (TS) C opposite (arrowheads) intertracheary radial pits (radial longitudinal section, RLS) D alternate (arrowheads) intertracheary radial pits (RLS) E and F cross-fields (RLS) G wall alteration of the secondary walls of tracheids (tangential longitudinal section, TLS) H uniseriate rays (TLS) I uniseriate rays (TLS). Scale bars: 5 mm (A); 500 μm (B); 50 μm (C, D, E, F, G); 100 μm (H); 200 μm (I)." figureDoi="10.3897/phytokeys.156.54175.figure2" httpUri="https://binary.pensoft.net/fig/444202" pageId="0" pageNumber="81">2B</figureCitation>
|
|
). Intertracheary pitting in radial walls is mixed, uni- to biseriate, predominantly uniseriate (Si = 1.25), contiguous (Cp = 88.1%), and mostly alternate, rarely opposite, when biseriate (Fig.
|
|
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Protophyllocladoxylon francisiae, MPEF-Pb 10694: A Growth rings of type D (transverse section, TS) B detail of a growth ring of type D boundary (TS) C opposite (arrowheads) intertracheary radial pits (radial longitudinal section, RLS) D alternate (arrowheads) intertracheary radial pits (RLS) E and F cross-fields (RLS) G wall alteration of the secondary walls of tracheids (tangential longitudinal section, TLS) H uniseriate rays (TLS) I uniseriate rays (TLS). Scale bars: 5 mm (A); 500 μm (B); 50 μm (C, D, E, F, G); 100 μm (H); 200 μm (I)." figureDoi="10.3897/phytokeys.156.54175.figure2" httpUri="https://binary.pensoft.net/fig/444202" pageId="0" pageNumber="81">2C, D</figureCitation>
|
|
). Intertracheary pits are hexagonal to rounded in outline; 19.2 (13.8-24.6, SD = 1.9)
|
|
<normalizedToken originalValue="μm">μm</normalizedToken>
|
|
in vertical diameter (Fig.
|
|
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Protophyllocladoxylon francisiae, MPEF-Pb 10694: A Growth rings of type D (transverse section, TS) B detail of a growth ring of type D boundary (TS) C opposite (arrowheads) intertracheary radial pits (radial longitudinal section, RLS) D alternate (arrowheads) intertracheary radial pits (RLS) E and F cross-fields (RLS) G wall alteration of the secondary walls of tracheids (tangential longitudinal section, TLS) H uniseriate rays (TLS) I uniseriate rays (TLS). Scale bars: 5 mm (A); 500 μm (B); 50 μm (C, D, E, F, G); 100 μm (H); 200 μm (I)." figureDoi="10.3897/phytokeys.156.54175.figure2" httpUri="https://binary.pensoft.net/fig/444202" pageId="0" pageNumber="81">2C, D</figureCitation>
|
|
). Tracheid tangential diameter is 44.5 (30.3-61.2, SD = 7.0)
|
|
<normalizedToken originalValue="μm">μm</normalizedToken>
|
|
. Cross-fields have 1-4, mean 1.9, pits per cross-field (Fig.
|
|
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Protophyllocladoxylon francisiae, MPEF-Pb 10694: A Growth rings of type D (transverse section, TS) B detail of a growth ring of type D boundary (TS) C opposite (arrowheads) intertracheary radial pits (radial longitudinal section, RLS) D alternate (arrowheads) intertracheary radial pits (RLS) E and F cross-fields (RLS) G wall alteration of the secondary walls of tracheids (tangential longitudinal section, TLS) H uniseriate rays (TLS) I uniseriate rays (TLS). Scale bars: 5 mm (A); 500 μm (B); 50 μm (C, D, E, F, G); 100 μm (H); 200 μm (I)." figureDoi="10.3897/phytokeys.156.54175.figure2" httpUri="https://binary.pensoft.net/fig/444202" pageId="0" pageNumber="81">2E, F</figureCitation>
|
|
). Cross-field pits are circular with simple borders (rarely with narrow borders); 14.8 (11.8-18.4, SD = 1.8)
|
|
<normalizedToken originalValue="μm">μm</normalizedToken>
|
|
in vertical diameter (Figs
|
|
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Protophyllocladoxylon francisiae, MPEF-Pb 10694: A Growth rings of type D (transverse section, TS) B detail of a growth ring of type D boundary (TS) C opposite (arrowheads) intertracheary radial pits (radial longitudinal section, RLS) D alternate (arrowheads) intertracheary radial pits (RLS) E and F cross-fields (RLS) G wall alteration of the secondary walls of tracheids (tangential longitudinal section, TLS) H uniseriate rays (TLS) I uniseriate rays (TLS). Scale bars: 5 mm (A); 500 μm (B); 50 μm (C, D, E, F, G); 100 μm (H); 200 μm (I)." figureDoi="10.3897/phytokeys.156.54175.figure2" httpUri="https://binary.pensoft.net/fig/444202" pageId="0" pageNumber="81">2E, F</figureCitation>
|
|
,
|
|
<figureCitation captionStart="Figure 6" captionStartId="F6" captionText="Figure 6. Schematic drawing of the cross-fields: A Protophyllocladoxylon francisiae B cf. Cupressinoxylon sp. 1 C Phyllocladoxylon antarcticum D cf. Cupressinoxylon sp. 2. Scale bar: 50 μm." figureDoi="10.3897/phytokeys.156.54175.figure6" httpUri="https://binary.pensoft.net/fig/444206" pageId="0" pageNumber="81">6A</figureCitation>
|
|
). Horizontal walls of ray parenchyma cells are smooth (Fig.
|
|
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Protophyllocladoxylon francisiae, MPEF-Pb 10694: A Growth rings of type D (transverse section, TS) B detail of a growth ring of type D boundary (TS) C opposite (arrowheads) intertracheary radial pits (radial longitudinal section, RLS) D alternate (arrowheads) intertracheary radial pits (RLS) E and F cross-fields (RLS) G wall alteration of the secondary walls of tracheids (tangential longitudinal section, TLS) H uniseriate rays (TLS) I uniseriate rays (TLS). Scale bars: 5 mm (A); 500 μm (B); 50 μm (C, D, E, F, G); 100 μm (H); 200 μm (I)." figureDoi="10.3897/phytokeys.156.54175.figure2" httpUri="https://binary.pensoft.net/fig/444202" pageId="0" pageNumber="81">2E</figureCitation>
|
|
). Wall alteration (not helical thickening) of the secondary walls of tracheids is observed (Fig.
|
|
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Protophyllocladoxylon francisiae, MPEF-Pb 10694: A Growth rings of type D (transverse section, TS) B detail of a growth ring of type D boundary (TS) C opposite (arrowheads) intertracheary radial pits (radial longitudinal section, RLS) D alternate (arrowheads) intertracheary radial pits (RLS) E and F cross-fields (RLS) G wall alteration of the secondary walls of tracheids (tangential longitudinal section, TLS) H uniseriate rays (TLS) I uniseriate rays (TLS). Scale bars: 5 mm (A); 500 μm (B); 50 μm (C, D, E, F, G); 100 μm (H); 200 μm (I)." figureDoi="10.3897/phytokeys.156.54175.figure2" httpUri="https://binary.pensoft.net/fig/444202" pageId="0" pageNumber="81">2G</figureCitation>
|
|
). Average ray height is medium, 5.6 (1-13, SD = 3.2) cells high, rays are exclusively uniseriate (Fig.
|
|
<figureCitation captionStart="Figure 2" captionStartId="F2" captionText="Figure 2. Protophyllocladoxylon francisiae, MPEF-Pb 10694: A Growth rings of type D (transverse section, TS) B detail of a growth ring of type D boundary (TS) C opposite (arrowheads) intertracheary radial pits (radial longitudinal section, RLS) D alternate (arrowheads) intertracheary radial pits (RLS) E and F cross-fields (RLS) G wall alteration of the secondary walls of tracheids (tangential longitudinal section, TLS) H uniseriate rays (TLS) I uniseriate rays (TLS). Scale bars: 5 mm (A); 500 μm (B); 50 μm (C, D, E, F, G); 100 μm (H); 200 μm (I)." figureDoi="10.3897/phytokeys.156.54175.figure2" httpUri="https://binary.pensoft.net/fig/444202" pageId="0" pageNumber="81">2H, I</figureCitation>
|
|
) and with a frequency of 3.5 (2-5, SD = 0.9) rays per mm.
|
|
</paragraph>
|
|
<caption doi="10.3897/phytokeys.156.54175.figure2" httpUri="https://binary.pensoft.net/fig/444202" pageId="0" pageNumber="81" start="Figure 2" startId="F2">
|
|
<paragraph pageId="0" pageNumber="81">
|
|
<emphasis bold="true" pageId="0" pageNumber="81">Figure 2.</emphasis>
|
|
<taxonomicName class="Pinopsida" family="Podocarpaceae" genus="Protophyllocladoxylon" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Protophyllocladoxylon francisiae" order="Pinales" pageId="0" pageNumber="81" phylum="Tracheophyta" rank="species" species="francisiae">
|
|
<emphasis italics="true" pageId="0" pageNumber="81">Protophyllocladoxylon francisiae</emphasis>
|
|
</taxonomicName>
|
|
, MPEF-Pb 10694:
|
|
<emphasis bold="true" pageId="0" pageNumber="81">A</emphasis>
|
|
Growth rings of type D (transverse section, TS)
|
|
<emphasis bold="true" pageId="0" pageNumber="81">B</emphasis>
|
|
detail of a growth ring of type D boundary (TS)
|
|
<emphasis bold="true" pageId="0" pageNumber="81">C</emphasis>
|
|
opposite (arrowheads) intertracheary radial pits (radial longitudinal section, RLS)
|
|
<emphasis bold="true" pageId="0" pageNumber="81">D</emphasis>
|
|
alternate (arrowheads) intertracheary radial pits (RLS)
|
|
<emphasis bold="true" pageId="0" pageNumber="81">E</emphasis>
|
|
and
|
|
<emphasis bold="true" pageId="0" pageNumber="81">F</emphasis>
|
|
cross-fields (RLS)
|
|
<emphasis bold="true" pageId="0" pageNumber="81">G</emphasis>
|
|
wall alteration of the secondary walls of tracheids (tangential longitudinal section, TLS)
|
|
<emphasis bold="true" pageId="0" pageNumber="81">H</emphasis>
|
|
uniseriate rays (TLS)
|
|
<emphasis bold="true" pageId="0" pageNumber="81">I</emphasis>
|
|
uniseriate rays (TLS). Scale bars: 5 mm (
|
|
<emphasis bold="true" pageId="0" pageNumber="81">A</emphasis>
|
|
); 500
|
|
<normalizedToken originalValue="μm">μm</normalizedToken>
|
|
(
|
|
<emphasis bold="true" pageId="0" pageNumber="81">B</emphasis>
|
|
); 50
|
|
<normalizedToken originalValue="μm">μm</normalizedToken>
|
|
(
|
|
<emphasis bold="true" pageId="0" pageNumber="81">C, D, E, F, G</emphasis>
|
|
); 100
|
|
<normalizedToken originalValue="μm">μm</normalizedToken>
|
|
(
|
|
<emphasis bold="true" pageId="0" pageNumber="81">H</emphasis>
|
|
); 200
|
|
<normalizedToken originalValue="μm">μm</normalizedToken>
|
|
(
|
|
<emphasis bold="true" pageId="0" pageNumber="81">I</emphasis>
|
|
).
|
|
</paragraph>
|
|
</caption>
|
|
</subSubSection>
|
|
<subSubSection pageId="0" pageNumber="81" type="remarks">
|
|
<paragraph pageId="0" pageNumber="81">Remarks.</paragraph>
|
|
<paragraph pageId="0" pageNumber="81">
|
|
This specimen is characterized by its distinct growth ring boundaries, uni- to biseriate mixed intertracheary radial pitting, cross-fields usually with one or two mostly simple pits, relatively wide tracheids, uniseriate rays, and absence of resin-plugs and axial parenchyma. These characters indicate that this wood belongs to the fossil-genus
|
|
<taxonomicName authorityName="Krausel" authorityYear="1939" class="Pinopsida" family="Podocarpaceae" genus="Protophyllocladoxylon" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Protophyllocladoxylon" order="Pinales" pageId="0" pageNumber="81" phylum="Tracheophyta" rank="genus">
|
|
<emphasis italics="true" pageId="0" pageNumber="81">Protophyllocladoxylon</emphasis>
|
|
</taxonomicName>
|
|
, because of the mixed radial pitting, simple large pits in the cross-fields, uniseriate rays, and smooth ray cell walls (
|
|
<bibRefCitation DOI="https://doi.org/10.1016/j.revpalbo.2007.09.004" author="Philippe, M" journalOrPublisher="Review of Palaeobotany and Palynology" pageId="0" pageNumber="81" pagination="184 - 207" refId="B34" refString="Philippe, M, Bamford, MK, 2008. A key to morphogenera used for Mesozoic conifer-like woods. Review of Palaeobotany and Palynology 148 (2-4): 184 - 207, DOI: https://doi.org/10.1016/j.revpalbo.2007.09.004" title="A key to morphogenera used for Mesozoic conifer-like woods." url="https://doi.org/10.1016/j.revpalbo.2007.09.004" volume="148" year="2008">Philippe and Bamford 2008</bibRefCitation>
|
|
). Conservation of the name
|
|
<taxonomicName authorityName="Krausel" authorityYear="1939" class="Pinopsida" family="Podocarpaceae" genus="Protophyllocladoxylon" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Protophyllocladoxylon" order="Pinales" pageId="0" pageNumber="81" phylum="Tracheophyta" rank="genus">
|
|
<emphasis italics="true" pageId="0" pageNumber="81">Protophyllocladoxylon</emphasis>
|
|
</taxonomicName>
|
|
was recently proposed by
|
|
<bibRefCitation DOI="https://doi.org/10.1002/tax.12227" author="Zijlstra, G" journalOrPublisher="Taxon" pageId="0" pageNumber="81" pagination="412 - 413" refId="B66" refString="Zijlstra, G, Philippe, M, 2020. (2741) Proposal to conserve the name Protophyllocladoxylon (fossil Coniferophyta: Coniferales) with a conserved type. Taxon 69 (2): 412 - 413, DOI: https://doi.org/10.1002/tax.12227" title="(2741) Proposal to conserve the name Protophyllocladoxylon (fossil Coniferophyta: Coniferales) with a conserved type." url="https://doi.org/10.1002/tax.12227" volume="69" year="2020">Zijlstra and Philippe (2020)</bibRefCitation>
|
|
. Among the more than 20 species of the genus,
|
|
<taxonomicName lsidName="P. francisiae" pageId="0" pageNumber="81" rank="species" species="francisiae">
|
|
<emphasis italics="true" pageId="0" pageNumber="81">P. francisiae</emphasis>
|
|
</taxonomicName>
|
|
is distinguished by its distinct growth ring boundaries, uni- to biseriate and mixed radial pitting, and absence of axial parenchyma and resin plugs (
|
|
<bibRefCitation DOI="https://doi.org/10.1111/j.1755-6724.2010.00160.x" author="Zhang, Y" journalOrPublisher="Acta Geologica Sinica" pageId="0" pageNumber="81" pagination="257 - 268" refId="B65" refString="Zhang, Y, Wang, J, Liu, LJ, Li, N, 2010. Protophyllocladoxylon jingyuanense sp. nov., a gymnospermous wood of the Serpukhovian (Late Mississippian) from Gansu, Northwest China. Acta Geologica Sinica 84 (2): 257 - 268, DOI: https://doi.org/10.1111/j.1755-6724.2010.00160.x" title="Protophyllocladoxylon jingyuanense sp. nov., a gymnospermous wood of the Serpukhovian (Late Mississippian) from Gansu, Northwest China." url="https://doi.org/10.1111/j.1755-6724.2010.00160.x" volume="84" year="2010">Zhang et al. 2010</bibRefCitation>
|
|
;
|
|
<bibRefCitation DOI="https://doi.org/10.1016/j.revpalbo.2013.09.001" author="Pujana, RR" journalOrPublisher="Review of Palaeobotany and Palynology" pageId="0" pageNumber="81" pagination="122 - 137" refId="B37" refString="Pujana, RR, Santillana, SN, Marenssi, SA, 2014. Conifer fossil woods from the La Meseta Formation (Eocene of Western Antarctica): Evidence of Podocarpaceae -dominated forests. Review of Palaeobotany and Palynology 200: 122 - 137, DOI: https://doi.org/10.1016/j.revpalbo.2013.09.001" title="Conifer fossil woods from the La Meseta Formation (Eocene of Western Antarctica): Evidence of Podocarpaceae - dominated forests." url="https://doi.org/10.1016/j.revpalbo.2013.09.001" volume="200" year="2014">Pujana et al. 2014</bibRefCitation>
|
|
).
|
|
</paragraph>
|
|
<paragraph pageId="0" pageNumber="81">
|
|
<taxonomicName class="Pinopsida" family="Podocarpaceae" genus="Protophyllocladoxylon" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Protophyllocladoxylon francisiae" order="Pinales" pageId="0" pageNumber="81" phylum="Tracheophyta" rank="species" species="francisiae">
|
|
<emphasis italics="true" pageId="0" pageNumber="81">Protophyllocladoxylon francisiae</emphasis>
|
|
</taxonomicName>
|
|
was first described by
|
|
<bibRefCitation DOI="https://doi.org/10.1016/j.revpalbo.2013.09.001" author="Pujana, RR" journalOrPublisher="Review of Palaeobotany and Palynology" pageId="0" pageNumber="81" pagination="122 - 137" refId="B37" refString="Pujana, RR, Santillana, SN, Marenssi, SA, 2014. Conifer fossil woods from the La Meseta Formation (Eocene of Western Antarctica): Evidence of Podocarpaceae -dominated forests. Review of Palaeobotany and Palynology 200: 122 - 137, DOI: https://doi.org/10.1016/j.revpalbo.2013.09.001" title="Conifer fossil woods from the La Meseta Formation (Eocene of Western Antarctica): Evidence of Podocarpaceae - dominated forests." url="https://doi.org/10.1016/j.revpalbo.2013.09.001" volume="200" year="2014">Pujana et al. (2014)</bibRefCitation>
|
|
from material collected from the Eocene La Meseta Formation, Seymour/Marambio Island, Antarctica, and it was later reported from the Paleocene Cross Valley and Sobral formations that crop out on the same island (
|
|
<bibRefCitation DOI="https://doi.org/10.1016/j.revpalbo.2015.07.010" author="Pujana, RR" journalOrPublisher="Review of Palaeobotany and Palynology" pageId="0" pageNumber="81" pagination="56 - 66" refId="B38" refString="Pujana, RR, Marenssi, SA, Santillana, SN, 2015. Fossil woods from the Cross Valley Formation (Paleocene of Western Antarctica): Araucariaceae -dominated forests. Review of Palaeobotany and Palynology 222: 56 - 66, DOI: https://doi.org/10.1016/j.revpalbo.2015.07.010" title="Fossil woods from the Cross Valley Formation (Paleocene of Western Antarctica): Araucariaceae - dominated forests." url="https://doi.org/10.1016/j.revpalbo.2015.07.010" volume="222" year="2015">Pujana et al. 2015</bibRefCitation>
|
|
;
|
|
<bibRefCitation DOI="https://doi.org/10.5710/AMGH.27.07.2017.3095" author="Mirabelli, SL" journalOrPublisher="Ameghiniana" pageId="0" pageNumber="81" pagination="91 - 108" refId="B29" refString="Mirabelli, SL, Pujana, RR, Marenssi, SA, Santillana, SN, 2018. Conifer fossil woods from the Sobral Formation (lower Paleocene, Western Antarctica). Ameghiniana 55 (1): 91 - 108, DOI: https://doi.org/10.5710/AMGH.27.07.2017.3095" title="Conifer fossil woods from the Sobral Formation (lower Paleocene, Western Antarctica)." url="https://doi.org/10.5710/AMGH.27.07.2017.3095" volume="55" year="2018">Mirabelli et al. 2018</bibRefCitation>
|
|
). It is also present in the Eocene-Oligocene
|
|
<normalizedToken originalValue="Río">Rio</normalizedToken>
|
|
Turbio Formation, Santa Cruz Province, southern Patagonia (
|
|
<bibRefCitation DOI="https://doi.org/10.1163/22941932-40190253" author="Pujana, RR" journalOrPublisher="IAWA Journal" pageId="0" pageNumber="81" pagination="596 - 626" refId="B36" refString="Pujana, RR, Ruiz, DP, 2019. Fossil woods from the Eocene-Oligocene (Rio Turbio Formation) of southwestern Patagonia (Santa Cruz Province, Argentina). IAWA Journal 40 (3): 596 - 626, DOI: https://doi.org/10.1163/22941932-40190253" title="Fossil woods from the Eocene-Oligocene (Rio Turbio Formation) of southwestern Patagonia (Santa Cruz Province, Argentina)." url="https://doi.org/10.1163/22941932-40190253" volume="40" year="2019">Pujana and Ruiz 2019</bibRefCitation>
|
|
). Interestingly, as is the case at Laguna del Hunco, this species is always a minor component of its floras and never dominates the assemblages.
|
|
</paragraph>
|
|
<paragraph pageId="0" pageNumber="81">
|
|
The fossil-genus
|
|
<taxonomicName authorityName="Krausel" authorityYear="1939" class="Pinopsida" family="Podocarpaceae" genus="Protophyllocladoxylon" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Protophyllocladoxylon" order="Pinales" pageId="0" pageNumber="81" phylum="Tracheophyta" rank="genus">
|
|
<emphasis italics="true" pageId="0" pageNumber="81">Protophyllocladoxylon</emphasis>
|
|
</taxonomicName>
|
|
is quite controversial.
|
|
<bibRefCitation DOI="https://doi.org/10.1144/SP434.17" author="Vajda, V" editor="Kear, BP" journalOrPublisher="Geological Society, London, Special Publications 434. The Geological Society of London, London" pageId="0" pageNumber="81" pagination="127 - 147" refId="B52" refString="Vajda, V, Linderson, H, McLoughlin, S, 2016. Disrupted vegetation as a response to Jurassic volcanism in southern Sweden. In: Kear, BP, Lindgren, J, Hurum, JH, Milan, J, Vajda, V, Eds., Mesozoic biotas of Scandinavia and its Arctic territories. Geological Society, London, Special Publications 434. The Geological Society of London, London: 127 - 147, DOI: https://doi.org/10.1144/SP434.17" title="Disrupted vegetation as a response to Jurassic volcanism in southern Sweden." url="https://doi.org/10.1144/SP434.17" volumeTitle="Mesozoic biotas of Scandinavia and its Arctic territories." year="2016">Vajda et al. (2016)</bibRefCitation>
|
|
suggested that
|
|
<taxonomicName authorityName="Krausel" authorityYear="1939" class="Pinopsida" family="Podocarpaceae" genus="Protophyllocladoxylon" higherTaxonomySource="GBIF" kingdom="Plantae" lsidName="Protophyllocladoxylon" order="Pinales" pageId="0" pageNumber="81" phylum="Tracheophyta" rank="genus">
|
|
<emphasis italics="true" pageId="0" pageNumber="81">Protophyllocladoxylon</emphasis>
|
|
</taxonomicName>
|
|
represents various unrelated botanical groups, principally because of its long temporal range from the Paleozoic to the Cenozoic (
|
|
<bibRefCitation DOI="https://doi.org/10.1111/j.1755-6724.2010.00160.x" author="Zhang, Y" journalOrPublisher="Acta Geologica Sinica" pageId="0" pageNumber="81" pagination="257 - 268" refId="B65" refString="Zhang, Y, Wang, J, Liu, LJ, Li, N, 2010. Protophyllocladoxylon jingyuanense sp. nov., a gymnospermous wood of the Serpukhovian (Late Mississippian) from Gansu, Northwest China. Acta Geologica Sinica 84 (2): 257 - 268, DOI: https://doi.org/10.1111/j.1755-6724.2010.00160.x" title="Protophyllocladoxylon jingyuanense sp. nov., a gymnospermous wood of the Serpukhovian (Late Mississippian) from Gansu, Northwest China." url="https://doi.org/10.1111/j.1755-6724.2010.00160.x" volume="84" year="2010">Zhang et al. 2010</bibRefCitation>
|
|
; see also
|
|
<bibRefCitation DOI="https://doi.org/10.1071/SB18043" author="Andruchow-Colombo, A" journalOrPublisher="Australian Systematic Botany" pageId="0" pageNumber="81" pagination="290 - 309" refId="B1" refString="Andruchow-Colombo, A, Wilf, P, Escapa, IH, 2019. A South American fossil relative of Phyllocladus: Huncocladus laubenfelsii gen. et sp. nov. (Podocarpaceae), from the early Eocene of Laguna del Hunco, Patagonia, Argentina. Australian Systematic Botany 32: 290 - 309, DOI: https://doi.org/10.1071/SB18043" title="A South American fossil relative of Phyllocladus: Huncocladus laubenfelsii gen. et sp. nov. (Podocarpaceae), from the early Eocene of Laguna del Hunco, Patagonia, Argentina." url="https://doi.org/10.1071/SB18043" volume="32" year="2019">Andruchow-Colombo et al. 2019</bibRefCitation>
|
|
).
|
|
<bibRefCitation DOI="https://doi.org/10.1163/22941932-40190253" author="Pujana, RR" journalOrPublisher="IAWA Journal" pageId="0" pageNumber="81" pagination="596 - 626" refId="B36" refString="Pujana, RR, Ruiz, DP, 2019. Fossil woods from the Eocene-Oligocene (Rio Turbio Formation) of southwestern Patagonia (Santa Cruz Province, Argentina). IAWA Journal 40 (3): 596 - 626, DOI: https://doi.org/10.1163/22941932-40190253" title="Fossil woods from the Eocene-Oligocene (Rio Turbio Formation) of southwestern Patagonia (Santa Cruz Province, Argentina)." url="https://doi.org/10.1163/22941932-40190253" volume="40" year="2019">Pujana and Ruiz (2019)</bibRefCitation>
|
|
suggested that
|
|
<taxonomicName lsidName="P. francisiae" pageId="0" pageNumber="81" rank="species" species="francisiae">
|
|
<emphasis italics="true" pageId="0" pageNumber="81">P. francisiae</emphasis>
|
|
</taxonomicName>
|
|
, in particular, could represent an extinct member of the
|
|
<taxonomicName family="Podocarpaceae" lsidName="" pageId="0" pageNumber="81" rank="family">Podocarpaceae</taxonomicName>
|
|
because it has the general wood anatomy of the family but does not conform to any of the extant genera.
|
|
</paragraph>
|
|
</subSubSection>
|
|
</treatment>
|
|
</document> |