https://m2.mtmt.hu/ eng 2026-05-12 08:10 true true 1 1 1 1 100 1 1 DESC publishedYear false ASC firstAuthor true ASC title true JournalArticle 2523291 APPROVED true 0 2018-10-02T08:54:25.000+0000 false 2523291 2025-12-23T02:09:52.149+0000 2018-10-02T08:54:25.000+0000 2014-02-05T14:49:14.000+0000 true 10033703 Rabi Márton /api/author/10033703 Author true 10033703 2018-10-22T12:42:30.346+0000 2018-10-22T12:42:30.346+0000 true false true 24 24 /api/publicationtype/24 PublicationType 1 true 24 JournalArticle true 10000059 Article true 24 24 /api/publicationtype/24 PublicationType 1 true 24 JournalArticle /api/subtype/10000059 Szakcikk SubType 101 true 10000059 true 1 /api/category/1 Category true 1 Delfino, M Gross morphology and microstructure of type locality ossicles of Psephophorus polygonus Meyer, 1847 (Testudines, Dermochelyidae) true true /api/journal/1695 REVIEWED true false 1695 false 1695 true 0016-7568 1469-5081 Journal FOREIGN 150 5 767 782 767 16 2013 Psephophorus polygonus Meyer, 1847, the first fossil leatherback turtle to be named, was described on the basis of shell ossicles from the middle Miocene (MN6-7/8?) of Slovakia. The whereabouts of this material is uncertain but a slab on display at the Naturhistorisches Museum Wien is considered the neotype. We rediscovered further type locality ossicles in four European institutions, re-evaluated their gross morphology and described for the first time their microstructure by comparing them with Dermochelys coriacea, the only living dermochelyid turtle. The gross morphology is congruent with that already described for P. polygonus, but with two significant exceptions: the ridged ossicles of P. polygonus may have a distinctly concave ventral surface as well as a tectiform shape in cross-section. They do not develop the external keel typical of many ossicles of D. coriacea. Both ridged and non-ridged ossicles of P. polygonus are characterized by compact diploe structures with an internal cortex consisting of a coarse fibrous meshwork, whereas the proportionately thinner ossicles of D. coriacea tend to lose the internal cortex, and thus their diploe, during ontogeny. The ossicles of both P. polygonus and D. coriacea differ from those of other lineages of amniotes whose carapace is composed of polygonal ossicles or platelets, in having growth centres situated at the plate centres just interior to the external bone surface and not within the cancellous core or closer to the internal compact layer. The new diagnosis of P. polygonus allows us to preliminarily re-evaluate the taxonomy of some of the Psephophorus-like species. Despite some macro-and micromorphological differences, it seems likely that Psephophorus was as cosmopolitan as extant Dermochelys and had a broadly similar ecology, with a possible difference concerning the dive depth. 2014 (Rabi Márton (őslénytan); 2014.02.05. 15:48:57) true true true false false CLOSED 2025-12-23 false true 10033703 Rabi Márton /api/author/10033703 Author true 10033703 17 0 17 10 0 17 17 17 7 17 17 10 10 10 7 0 17 10 17 10 0 0 0 Q1 A false false false false 2014-05-06T13:53:47.000+0000 2014-02-05T14:53:47.000+0000 MTA-ELTE Lendület Dinoszaurusz Kutatócsoport (ELTE / TTK / Ft_K) 1 6 1 8 0 true Language 10002 /api/language/10002 Angol English true 2 true PersonAuthorship 4951887 /api/authorship/4951887 1 0.125 true false Delfino M true false false AuthorshipType 1 /api/authorshiptype/1 0 true 0 true false 19358230 true PersonAuthorship 4951888 /api/authorship/4951888 2 0.125 false false Scheyer TM true false false AuthorshipType 1 /api/authorshiptype/1 0 true 0 true false 19358229 true PersonAuthorship 4951889 /api/authorship/4951889 3 0.125 false false Chesi F true false false AuthorshipType 1 /api/authorshiptype/1 0 true 0 true false 19358228 true PersonAuthorship 4951890 /api/authorship/4951890 4 0.125 false false Fletcher T true false false AuthorshipType 1 /api/authorshiptype/1 0 true 0 true false 19358227 true PersonAuthorship 4951891 /api/authorship/4951891 5 0.125 false false Gemel R true false false AuthorshipType 1 /api/authorshiptype/1 0 true 0 true false 19358226 true PersonAuthorship 4951892 /api/authorship/4951892 6 0.125 false false MacDonald S true false false AuthorshipType 1 /api/authorshiptype/1 0 true 0 true false 19358225 true PersonAuthorship 4951893 /api/authorship/4951893 7 0.125 false false Author 10033703 /api/author/10033703 Rabi Márton true 10033703 true Rabi M true false false AuthorshipType 1 /api/authorshiptype/1 0 true 0 true false 19358224 true PersonAuthorship 4951894 /api/authorship/4951894 8 0.125 false true Salisbury SW true false false AuthorshipType 1 /api/authorshiptype/1 0 true 0 true false 19358223 true PublicationIdentifier 771349 /api/publicationidentifier/771349 PlainSource 6 /api/publicationsource/6 PublicationSourceType 10001 /api/publicationsourcetype/10001 true true true DOI DOI https://doi.org/@@@ true true 6 true false NO 10.1017/S001675681200091X https://doi.org/10.1017/S001675681200091X false 615110 true PublicationIdentifier 771350 /api/publicationidentifier/771350 SwordSource 36 /api/publicationsource/36 PublicationSourceType 10007 /api/publicationsourcetype/10007 true true true REAL REAL http://real.mtak.hu/@@@ true true 36 true CLOSED false NO 29922 http://real.mtak.hu/29922 false 1231981 true PublicationIdentifier 771348 /api/publicationidentifier/771348 PlainSource 1 /api/publicationsource/1 PublicationSourceType 10003 /api/publicationsourcetype/10003 false true true WoS WoS https://www.webofscience.com/wos/woscc/full-record/@@@ true true 1 true false IDENTICAL 000322227500001 https://www.webofscience.com/wos/woscc/full-record/000322227500001 false 615109 true Classification 10399 /api/classification/10399 true true MtaRating 11435067 /api/mtarating/11435067 RatingType 10031 /api/ratingtype/10031 X. 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Földtudományok Osztálya HAS Section of Earth Sciences (X.) true 70 true true true A true true SjrRating 11135473 /api/sjrrating/11135473 40 0.24 journal RatingType 10002 /api/ratingtype/10002 sjr true true ClassificationExternal 1907 /api/classificationexternal/1907 true 1907 true Q1 DIRECT true true /api/publication/2523291 <div class="JournalArticle Publication long-list"> <div class="authors"> <img title="Forrásközlemény" style="float: left" src="/frontend/resources/grid/publication-core-icon.png"> <div class="autype autype0"> <span class="author-name" >Delfino M </span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" >Scheyer TM </span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" >Chesi F </span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" >Fletcher T </span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" >Gemel R </span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" >MacDonald S </span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" mtid="10033703"><a href="/gui2/?type=authors&mode=browse&sel=10033703" target="_blank">Rabi M (<span class="authorship-author-name">Rabi Márton</span> <span class="authorAux-mtmt"> őslénytan</span>) </a> </span> <span class="author-affil"><span title="Eötvös Loránd University">ELTE</span>/<span title="Faculty of Science">ELU FoS</span>/<span title="Institute of Geography and Earth Sciences">Inst_GeogrEarthSci</span>/<span title="Center of Earth Sciences">Cntr_EarthSci</span>/MTA-ELTE Lendület Dinosaur Research Group</span> ;&nbsp;&nbsp;&nbsp; <span class="author-name" >Salisbury SW </span> </div> </div> <div class="title"><a href="/gui2/?mode=browse&params=publication;2523291" target="_blank">Gross morphology and microstructure of type locality ossicles of Psephophorus polygonus Meyer, 1847 (Testudines, Dermochelyidae)</a></div> <div> <span class="journal-title">GEOLOGICAL MAGAZINE</span> <span class="journal-issn">(<a target="_blank" href="https://portal.issn.org/resource/ISSN/0016-7568">0016-7568</a> <a target="_blank" href="https://portal.issn.org/resource/ISSN/1469-5081">1469-5081</a>)</span>: <span class="journal-volume">150</span> <span class="journal-issue">5</span> <span class="page"> pp 767-782 </span> <span class="year">(2013)</span> </div> <div class="pub-footer"> <span class="language" xmlns="http://www.w3.org/1999/html">Language: English | </span> <span class="identifiers"> <span class="id identifier oa_none" title="none"> <a style="color:black" title="10.1017/S001675681200091X" target="_blank" href="https://doi.org/10.1017/S001675681200091X"> DOI </a> </span> <span class="id identifier oa_CLOSED" title=" Closed "> <a style="color:black" title="29922" target="_blank" href="http://real.mtak.hu/29922"> REAL </a> </span> <span class="id identifier oa_none" title="none"> <a style="color:blue" title="000322227500001" target="_blank" href="https://www.webofscience.com/wos/woscc/full-record/000322227500001"> WoS </a> </span> </span> <OnlyViewableByAuthor><div class="ratings"> <div class="journal-subject">Journal subject: Scopus - Geology&nbsp;&nbsp;&nbsp;Rank:&nbsp;Q1</div> <div class="journal-subject">HAS Section of Earth Sciences (X.) HASSESX&nbsp;&nbsp;&nbsp;A</div> </div></OnlyViewableByAuthor> <div class="publication-citation" style="margin-left: 0.5cm;"> <span title="" class="citingPub-count">Citing papers: 17</span> | Independent citation: 10 | Self citation: 7 | Unknown citation: 0 | Number of citations in WoS: 17 | Number of citations in Scopus:&nbsp;7 | WoS/Scopus assigned:&nbsp;17 | Number of citations with DOI:&nbsp;17 </div> <div class="mtid"><span class="long-pub-mtid">Publication: 2523291</span> | <span class="status-data status-APPROVED"> Published </span> <span class="oldId">Old id: 2523291</span> | Core | <span class="type-subtype">Journal Article ( Article ) </span> | <span class="pub-category">Scientific</span> | <span class="publication-sourceOfData">WOS</span> </div> <div class="lastModified">Last Modified: 2018.10.02. 10:54 Admin MTMT1 (admin) </div> </div></div>