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Nature 456, 450-451 (27 November 2008) | doi:10.1038/456450a; Published online 26 November 2008
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Palaeontology: Turtle origins out to sea
Robert R. Reisz1 & Jason J. Head1
Abstract
Various aspects of turtle evolution are the subject of vigorous debate among vertebrate palaeontologists. A newly described fossil species, the oldest yet discovered, adds grist to the mill.
During the Late Triassic, some 220 million years ago, primitive turtles about 40 centimetres in length were preserved in sedimentary deposits in what is now southwestern China. These fossils are examples of a new species of a very early turtle, named Odontochelys semitestacea, which is described by Li et al.page 497 of this issue1 and which will change ideas about turtle origins and the evolution of their striking body plan.
- Robert R. Reisz and Jason J. Head are in the Department of Biology, University of Toronto Mississauga, Mississauga, Ontario L5L 1C6, Canada.
Email: robert.reisz@utoronto.ca
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An ancestral turtle from the Late Triassic of southwestern ChinaNature Letters to Editor (27 Nov 2008)

