labyrinthodont

 
Pronunciation: /ˌlabəˈrɪnθədɒnt/

adjective

Zoology
  • (of teeth) having the enamel deeply folded to form a labyrinthine structure.
  • Palaeontology relating to a group of large fossil amphibians of the late Devonian to early Triassic periods having labyrinthodont teeth.

noun

  • a labyrinthodont amphibian.
    • Former subclass Labyrinthodontia: several families, but no longer considered to be a single group

Origin:

mid 19th century: from modern Latin Labyrinthodontia, from Greek laburinthos 'labyrinth' + odous, odont- 'tooth'