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The first fossil skull of Chelus (Pleurodira: Chelidae; Matamata genus turtles) from the early Miocene of Colombia

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dc.creatorCadena, Edwin Alberto
dc.creatorJaramillo, Carlos Aspa
dc.date.accessioned2020-08-19T14:40:54Z
dc.date.available2020-08-19T14:40:54Z
dc.date.created2015spa
dc.description.abstractHere we describe the first fossil skull so far known for the turtle genus Chelus from the early Miocene (~ 16 m.y.), Castilletes Formation, Alta Guajira Peninsula, Cocinetas basin, Colombia. The skull is partially preserved, including most of the basicranium (pteygoid-bassioccipital bones) and the roof elements including the parietal, pterygoid and portions of the squamosal, supraoccipital and the most dorsal quadrate. The skull is preserved in three dimensions, without evidence of crushing, allowing the observation of the internal braincase morphology using microcomputer tomography. Comparisons with the skull of the only extant species for the genus Chelus fimbriata (Matamata turtle) allow us to conclude that for the last 16 million years the morphology of the skull for this genus has remained almost unvarying, with only a slightly higher compression of the most anterior braincase exhibited by the extant species. Due to its fragmentary condition, a more refined identification beyond the genus (Chelus sp.) is not possible; however, the overall skull design indicates that the fossil species could also have had the same ecological and dietary adaptations as its extant relative.eng
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.26879/545
dc.identifier.issnISSN: 1935-3952
dc.identifier.issnEISSN: 1094-8074
dc.identifier.urihttps://repository.urosario.edu.co/handle/10336/27067
dc.language.isoengspa
dc.publisherTexas A & M Universityspa
dc.relation.citationEndPage32
dc.relation.citationIssueNo. 32
dc.relation.citationStartPage18
dc.relation.citationTitlePalaeontologia Electronica, Paleontologia Electronica
dc.relation.citationVolumeVol. 18
dc.relation.ispartofPalaeontologia Electronica, ISSN: 1935-3952; EISSN:1094-8074, Vol.18, No.32 (2015); pp. 18-32spa
dc.relation.urihttps://palaeo-electronica.org/content/2015/1245-chelus-fossil-skullOpenspa
dc.rights.accesRightsinfo:eu-repo/semantics/openAccess
dc.rights.accesoAbierto (Texto Completo)spa
dc.sourcePalaeontologia Electronica, Paleontologia Electronicaspa
dc.source.instnameinstname:Universidad del Rosario
dc.source.reponamereponame:Repositorio Institucional EdocUR
dc.subject.keywordChelidaespa
dc.subject.keywordTestudinesspa
dc.subject.keywordColombiaspa
dc.subject.keywordSouth Americaspa
dc.subject.keywordLa Guajiraspa
dc.titleThe first fossil skull of Chelus (Pleurodira: Chelidae; Matamata genus turtles) from the early Miocene of Colombiaspa
dc.title.TranslatedTitleEl primer cráneo fósil de Chelus (Pleurodira: Chelidae; tortugas del género Matamata) del Mioceno temprano de Colombiaspa
dc.typearticleeng
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dc.type.spaArtículospa
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