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2 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 Lab·y·rin·tho·don·ta prop. n. pl.  Paleon. An extinct order of Amphibia, including the typical genus Labyrinthodon, and many other allied forms, from the Carboniferous, Permian, and Triassic formations. By recent writers they are divided into two or more orders. See Stegocephala.
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From: WordNet (r) 2.0

 Labyrinthodonta
      n : extinct amphibians typically resembling heavy-bodied
          salamanders or crocodiles and having a solid flattened
          skull and conical teeth; Devonian through Triassic [syn:
          Labyrinthodontia, superorder Labyrinthodontia, superorder
           Labyrinthodonta]