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

Here 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 r...

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Tipo de recurso:
Fecha de publicación:
2015
Institución:
Universidad del Rosario
Repositorio:
Repositorio EdocUR - U. Rosario
Idioma:
eng
OAI Identifier:
oai:repository.urosario.edu.co:10336/27067
Acceso en línea:
https://doi.org/10.26879/545
https://repository.urosario.edu.co/handle/10336/27067
Palabra clave:
Chelidae
Testudines
Colombia
South America
La Guajira
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spelling 88235006600ae9df4c2-0a18-4117-bf1d-4bf6fb9ef059-12020-08-19T14:40:54Z2020-08-19T14:40:54Z2015Here 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.application/pdfhttps://doi.org/10.26879/545ISSN: 1935-3952EISSN: 1094-8074https://repository.urosario.edu.co/handle/10336/27067engTexas A & M University32No. 3218Palaeontologia Electronica, Paleontologia ElectronicaVol. 18Palaeontologia Electronica, ISSN: 1935-3952; EISSN:1094-8074, Vol.18, No.32 (2015); pp. 18-32https://palaeo-electronica.org/content/2015/1245-chelus-fossil-skullOpenAbierto (Texto Completo)http://purl.org/coar/access_right/c_abf2Palaeontologia Electronica, Paleontologia Electronicainstname:Universidad del Rosarioreponame:Repositorio Institucional EdocURChelidaeTestudinesColombiaSouth AmericaLa GuajiraThe first fossil skull of Chelus (Pleurodira: Chelidae; Matamata genus turtles) from the early Miocene of ColombiaEl primer cráneo fósil de Chelus (Pleurodira: Chelidae; tortugas del género Matamata) del Mioceno temprano de ColombiaarticleArtículohttp://purl.org/coar/version/c_970fb48d4fbd8a85http://purl.org/coar/resource_type/c_6501Cadena, Edwin AlbertoJaramillo, Carlos AORIGINAL545.pdfapplication/pdf9903867https://repository.urosario.edu.co/bitstreams/b1ac5b49-c28a-4a2c-a04b-0626dded7825/download3bb542c82ce24a1eebf029f8ccedfee6MD51TEXT545.pdf.txt545.pdf.txtExtracted texttext/plain24925https://repository.urosario.edu.co/bitstreams/41e174fb-fe46-4b6c-8709-509aaee61dd2/downloadd1463413aece3294a3cebb8684cc1ce5MD52THUMBNAIL545.pdf.jpg545.pdf.jpgGenerated Thumbnailimage/jpeg4332https://repository.urosario.edu.co/bitstreams/04a0749e-5084-464d-ba3d-55750075be61/download6732090b7182b95880a2572575067321MD5310336/27067oai:repository.urosario.edu.co:10336/270672022-05-02 07:37:20.683269https://repository.urosario.edu.coRepositorio institucional EdocURedocur@urosario.edu.co
dc.title.spa.fl_str_mv The first fossil skull of Chelus (Pleurodira: Chelidae; Matamata genus turtles) from the early Miocene of Colombia
dc.title.TranslatedTitle.spa.fl_str_mv El primer cráneo fósil de Chelus (Pleurodira: Chelidae; tortugas del género Matamata) del Mioceno temprano de Colombia
title The first fossil skull of Chelus (Pleurodira: Chelidae; Matamata genus turtles) from the early Miocene of Colombia
spellingShingle The first fossil skull of Chelus (Pleurodira: Chelidae; Matamata genus turtles) from the early Miocene of Colombia
Chelidae
Testudines
Colombia
South America
La Guajira
title_short The first fossil skull of Chelus (Pleurodira: Chelidae; Matamata genus turtles) from the early Miocene of Colombia
title_full The first fossil skull of Chelus (Pleurodira: Chelidae; Matamata genus turtles) from the early Miocene of Colombia
title_fullStr The first fossil skull of Chelus (Pleurodira: Chelidae; Matamata genus turtles) from the early Miocene of Colombia
title_full_unstemmed The first fossil skull of Chelus (Pleurodira: Chelidae; Matamata genus turtles) from the early Miocene of Colombia
title_sort The first fossil skull of Chelus (Pleurodira: Chelidae; Matamata genus turtles) from the early Miocene of Colombia
dc.subject.keyword.spa.fl_str_mv Chelidae
Testudines
Colombia
South America
La Guajira
topic Chelidae
Testudines
Colombia
South America
La Guajira
description Here 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.
publishDate 2015
dc.date.created.spa.fl_str_mv 2015
dc.date.accessioned.none.fl_str_mv 2020-08-19T14:40:54Z
dc.date.available.none.fl_str_mv 2020-08-19T14:40:54Z
dc.type.eng.fl_str_mv article
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dc.type.coar.fl_str_mv http://purl.org/coar/resource_type/c_6501
dc.type.spa.spa.fl_str_mv Artículo
dc.identifier.doi.none.fl_str_mv https://doi.org/10.26879/545
dc.identifier.issn.none.fl_str_mv ISSN: 1935-3952
EISSN: 1094-8074
dc.identifier.uri.none.fl_str_mv https://repository.urosario.edu.co/handle/10336/27067
url https://doi.org/10.26879/545
https://repository.urosario.edu.co/handle/10336/27067
identifier_str_mv ISSN: 1935-3952
EISSN: 1094-8074
dc.language.iso.spa.fl_str_mv eng
language eng
dc.relation.citationEndPage.none.fl_str_mv 32
dc.relation.citationIssue.none.fl_str_mv No. 32
dc.relation.citationStartPage.none.fl_str_mv 18
dc.relation.citationTitle.none.fl_str_mv Palaeontologia Electronica, Paleontologia Electronica
dc.relation.citationVolume.none.fl_str_mv Vol. 18
dc.relation.ispartof.spa.fl_str_mv Palaeontologia Electronica, ISSN: 1935-3952; EISSN:1094-8074, Vol.18, No.32 (2015); pp. 18-32
dc.relation.uri.spa.fl_str_mv https://palaeo-electronica.org/content/2015/1245-chelus-fossil-skullOpen
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dc.rights.acceso.spa.fl_str_mv Abierto (Texto Completo)
rights_invalid_str_mv Abierto (Texto Completo)
http://purl.org/coar/access_right/c_abf2
dc.format.mimetype.none.fl_str_mv application/pdf
dc.publisher.spa.fl_str_mv Texas A & M University
dc.source.spa.fl_str_mv Palaeontologia Electronica, Paleontologia Electronica
institution Universidad del Rosario
dc.source.instname.none.fl_str_mv instname:Universidad del Rosario
dc.source.reponame.none.fl_str_mv reponame:Repositorio Institucional EdocUR
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