Mandibles of rhizodontids: anatomy, function and evolution within the tetrapod stem-group

  title={Mandibles of rhizodontids: anatomy, function and evolution within the tetrapod stem-group},
  author={Jonathan E. Jeffery},
  journal={Transactions of the Royal Society of Edinburgh: Earth Sciences},
  pages={255 - 276}
  • J. Jeffery
  • Published 1 September 2002
  • Geography
  • Transactions of the Royal Society of Edinburgh: Earth Sciences
ABSTRACT The Rhizodontida (Pisces: Sarcopterygii) is a clade of predatory fishes from the Upper Devonian (Aztecia; ?Givetian of Antarctica) through to the Upper Carboniferous (Strepsodus; Moscovian of northern Europe and North America). They form the most basal plesion within the tetrapod stem-lineage. The mandibles were dominated by large symphysial tusks on the dentary. Not much else is known of the mandibles in primitive rhizodontids. However, later forms show several derived characters: the… 

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    Transactions of the Royal Society of Edinburgh: Earth Sciences
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