A new Early Carboniferous tetrapod with a mélange of crown-group characters

  title={A new Early Carboniferous tetrapod with a m{\'e}lange of crown-group characters},
  author={Jennifer Alice Clack},
  • J. Clack
  • Published 2 July 1998
  • Biology, Environmental Science
  • Nature
Living (that is, crown-group) tetrapods represent the phylogenetic end-points of two lineages which diverged from each other during the mid/late Palaeozoic era. These two groups of tetrapods are the Amphibia (frogs, salamanders and caecilians), with their roots among temnospondyls,, and the Amniota (mammals, turtles, crocodiles, birds, lizards and snakes), with their roots among anthracosaurs,. The earliest representatives of both lineages, including a stem amniote, are known from the Viséan of… 

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