Histological study of karaurids, the oldest known (stem) urodeles

  title={Histological study of karaurids, the oldest known (stem) urodeles},
  author={Vivian de Buffr{\'e}nil and Aurore Canoville and Susan E. Evans and Michel Laurin},
  journal={Historical Biology},
  pages={109 - 114}
Little is known about the initial phases of lissamphibian history (before the Cretaceous), because their fossil record is quite scanty. Only the morphology of the earliest members has been investigated, although other sets of data, from bone microanatomy and histology, are known to yield valuable paleobiological information. In the present study, we provide the first histological and microanatomical data on the oldest known stem-urodeles, the karaurids, from the Middle Jurassic. Three humeri… 
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