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The anatomy, paleobiology, and evolutionary relationships of the largest extinct side-necked turtle.
Cadena, E-A; Scheyer, T M; Carrillo-Briceño, J D; Sánchez, R; Aguilera-Socorro, O A; Vanegas, A; Pardo, M; Hansen, D M; Sánchez-Villagra, M R.
Afiliação
  • Cadena EA; Universidad del Rosario, Facultad de Ciencias Naturales y Matemáticas, Grupo de Investigación Paleontología Neotropical Tradicional y Molecular (PaleoNeo), Bogotá, Colombia.
  • Scheyer TM; Palaeontological Institute and Museum, University of Zurich, Zurich, Switzerland.
  • Carrillo-Briceño JD; Palaeontological Institute and Museum, University of Zurich, Zurich, Switzerland.
  • Sánchez R; Museo de Paleontológico de Urumaco, Alcadía de Urumaco, Urumaco, Venezuela.
  • Aguilera-Socorro OA; Laboratorio de Paleoecologia e Mudanças Globais, Campus de Gragoatá, Universidade Federal Fluminense, Niterói, Rio de Janeiro, Brazil.
  • Vanegas A; Vigias del Patrimonio de la Tatacoa, La Victoria, Huila, Colombia.
  • Pardo M; Museo Geológico José Royo y Gómez, Servicio Geológico Colombiano, Bogotá, Colombia.
  • Hansen DM; Zoological Museum and the Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstrasse 190, 8057 Zurich, Switzerland.
  • Sánchez-Villagra MR; Palaeontological Institute and Museum, University of Zurich, Zurich, Switzerland.
Sci Adv ; 6(7): eaay4593, 2020 02.
Article em En | MEDLINE | ID: mdl-32095528
Despite being among the largest turtles that ever lived, the biology and systematics of Stupendemys geographicus remain largely unknown because of scant, fragmentary finds. We describe exceptional specimens and new localities of S. geographicus from the Miocene of Venezuela and Colombia. We document the largest shell reported for any extant or extinct turtle, with a carapace length of 2.40 m and estimated mass of 1.145 kg, almost 100 times the size of its closest living relative, the Amazon river turtle Peltocephalus dumerilianus, and twice that of the largest extant turtle, the marine leatherback Dermochelys coriacea. The new specimens greatly increase knowledge of the biology and evolution of this iconic species. Our findings suggest the existence of a single giant turtle species across the northern Neotropics, but with two shell morphotypes, suggestive of sexual dimorphism. Bite marks and punctured bones indicate interactions with large caimans that also inhabited the northern Neotropics.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Paleontologia / Tartarugas / Evolução Biológica / Extinção Biológica Limite: Animals País/Região como assunto: America do sul / Venezuela Idioma: En Revista: Sci Adv Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Colômbia País de publicação: Estados Unidos
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Paleontologia / Tartarugas / Evolução Biológica / Extinção Biológica Limite: Animals País/Região como assunto: America do sul / Venezuela Idioma: En Revista: Sci Adv Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Colômbia País de publicação: Estados Unidos