D defs.my
Entry 1 sense Webster, 1913

Mastodonsaurus

· Mas·to·don·sau·rus · IPA
01 n. A large extinct genus of labyrinthodonts, found in the European Triassic rocks.
  1. 1.
    A large extinct genus of labyrinthodonts, found in the European Triassic rocks.(Paleon.)