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New Cretaceous and Cenozoic Fossil Turtles from Colombia and Panama

其他書名	Systematic Paleontology, Phylogenetical and Paleobiogeographical Implications
出版	University of Florida, 2009
URL	http://books.google.com.hk/books?id=1SfIjwEACAAJ&hl=&source=gbs_api

註釋ABSTRACT: Fossil vertebrates from the tropical part of the New World are well known from at least twentyfive Mesozoic and Cenozoic localities. In spite of this considerable number of fossil localities, many groups of vertebrates still having huge gaps in their fossil record. That is the case for turtles, which lack of Mesozoic and Paleogene fossils, leaving many questions unresolved as for example how far in time the extant fauna of turtles have inhabited the tropics?, how they have evolved and responded to major geological and climatic events, and at the same time how these events have influenced dispersal and interaction events between faunas from different land sources. In the last five years, intensive fieldwork has been performed by geologists and paleontologists from the Florida Museum of Natural History, the University of Florida and the Smithsonian Tropical Research Institute, in three different localities in Colombia and Panama, for which I described the fossil turtles. In chapter 1, I described a new specimen of the Early Cretaceous (Valanginian) Notoemys zapatocaensis species, which represents an allotype for this species and also the best preserved specimen for basal pleurodires or sidenecked turtles, thus exhibiting a transitional morphological stage between primitive and derived turtles.