Synonyms for Superorder Labyrinthodontia (same or very similar meaning)
WordNet sense 1 (extinct amphibians typically resembling heavy-bodied salamanders or crocodiles and having a solid flattened skull and conical teeth; Devonian through Triassic):
Labyrinthodonta, Labyrinthodontia, superorder Labyrinthodonta
From the ODE community, based on WordNet
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