New pelomedusoid turtles from the late Palaeocene Cerrejón Formation of Colombia and their implications for phylogeny and body size evolution
作者： Edwin A. Cadena , Daniel T. Ksepka , Carlos A. Jaramillo , Jonathan I. Bloch
DOI: 10.1080/14772019.2011.569031
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摘要: Pelomedusoides comprises five moderate-sized extant genera with an entirely Southern Hemisphere distribution, but the fossil record of these turtles reveals a great diversity extinct taxa, documents several instances gigantism, and indicates complex palaeobiogeographical history for clade. Here, we report new pelomedusoid turtle fossils from late Palaeocene Cerrejon Formation Colombia. The most complete is represented by large skull (condylobasal length = 16 cm) described as Carbonemys cofrinii gen. et sp. nov. (Podocnemidae). incorporated into parsimony analysis utilizing modified morphological character matrix designed to test relationships within Panpelomedusoides, addition molecular data seven genes (12S RNA, cytochrome b, ND4, NT3, R35, RAG-1 RAG-2) drawn previous studies Podocnemidae. C. recovered Podocnemidae in results both morphology-only combined (t...
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