Quick Quiz: Nouns Score: Change category, Flip order Reset Correct! Noun: superorder labyrinthodonta Your choice? an amount of something available for use a route over which supplies can be delivered a small plug of medication designed for insertion into the rectum or vagina where it melts extinct amphibians typically resembling heavy-bodied salamanders or crocodiles and having a solid flattened skull and conical teeth; Devonian through Triassic