'Labyrinthodontia' definitions:
Definition of 'Labyrinthodontia'
(from WordNet)
noun
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, Labyrinthodonta, superorder Labyrinthodonta]