{"refrec":{"BRefID":303535,"RR":"<b>Peters, M.; Reumer, J.; Bosselaers, M.; Post, K.</b> (2018). A leatherback turtle (Testudines, Dermochelyidae) from the Miocene of the Westerschelde, the Netherlands, <b><i>in</i></b>: Farke, A. <i>et al.</i> <i>Society of vertebrate paleontology, october 2018, abstracts of papers 78<sup>th</sup> annual meeting.</i> pp. 197","BEntID":295829,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":", <b><i>in</i></b>: Farke, A. <i>et al.</i> <i>Society of vertebrate paleontology, october 2018, abstracts of papers 78<sup>th</sup> annual meeting.</i> pp. 197","DocTypID":17,"DocType":"Book chapters","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Peters, M.; Reumer, J.; Bosselaers, M.; Post, K.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Peters, M. <i>et al.</i>","Englishabstract":"The Westerschelde Estuary in The Netherlands is known for its rich vertebrate fossil content. In a recent trawling campaign aimed at sampling a late Miocene marine vertebrate assemblage, over 5000 specimens were retrieved, all currently stored in the Natuurhistorisch Museum Rotterdam. One specimen is a well preserved fragment of a dermochelyid sea-turtle carapace. The Westerschelde specimen is an addition to the scant hypodigm of dermochelyids from the Miocene North Sea. The carapace fragment is described and identified as <i>Psephophorus polygonus</i>. The various secondary marks present on the fragment are suggestive of both predatory and scavenging origin. Based on the assumption that <i>P. polygonus</i> had a similar carapace structure as recent <i>D. coriacea</i>, the minimal size of the complete carapace is estimated to have been 168 x 126 cm. Furthermore, based on the physical traits of the Westerschelde specimen and a reexamination of <i>P. polygonus</i> specimens, including the neotype stored at the Naturhistorisches Museum Wien (Austria), it is argued that previously assigned characteristics cannot be used as discriminative taxonomic properties of dermochelyids in general, and of <i>P. polygonus</i> in particular. An improved cladistic analysis on dermochelyids is performed based on previously defined and new taxonomic characters. Using this analysis it is argued that <i>Psephophorus calvertensis</i> is a junior synonym of <i>P. polygonus</i>. Hence, a new diagnosis of <i>Psephophorus polygonus</i> is defined. The ‘addition’ of <i>P. calvertensis</i> to the species <i>P. polygonus</i> confirms its presence on both sides of the Atlantic Ocean. Therefore, we suggest <i>P. polygonus</i> to have had a cosmopolitan distribution, similar to the extant species <i>Dermochelys coriacea</i>.","AbstractOtherLang":null,"BibLvlCode":"AM","StandardTitle":"A leatherback turtle (Testudines, Dermochelyidae) from the Miocene of the Westerschelde, the Netherlands","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:01.897972","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2018,"MonPub":null,"DateUpdate":"2018-12-03","DateCreate":"2018-12-03","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":{"AnaID":303535,"PubliDate":2018,"Pagination":"197","XtraPublOfAnaID":null,"ISBN":null,"Volume":null,"Issue":null,"BRefMon":303533,"BRefMonRR":"<b>Farke, A. <i>et al.</i></b> (2018). 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