A Middle Triassic stem-turtle and the evolution of the turtle body plan

  title={A Middle Triassic stem-turtle and the evolution of the turtle body plan},
  author={R. Schoch and H. Sues},
  • R. Schoch, H. Sues
  • Published 2015
  • Biology, Medicine
  • Nature
  • The origin and early evolution of turtles have long been major contentious issues in vertebrate zoology. This is due to conflicting character evidence from molecules and morphology and a lack of transitional fossils from the critical time interval. The ∼220-million-year-old stem-turtle Odontochelys from China has a partly formed shell and many turtle-like features in its postcranial skeleton. Unlike the 214-million-year-old Proganochelys from Germany and Thailand, it retains marginal teeth and… CONTINUE READING
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