Definition of labyrinthodont in English:

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Pronunciation: /ˌlabəˈrɪnθədɒnt/


1 Zoology (Of teeth) having the enamel deeply folded to form a labyrinthine structure.
1.1 Palaeontology Relating to a group of large fossil amphibians of the late Devonian to early Triassic periods having labyrinthodont teeth.
Example sentences
  • On land there was a major faunal turnover in which labyrinthodont amphibians, early reptile groups, and mammal-like reptiles died out and were replaced by archosaurs, lepidosaurs, and mammals.
  • Finding labyrinthodont amphibian vertebrae and lungfish teeth, we took several bags of matrix to wash.
  • Whether it was a labyrinthodont amphibian or a primitive reptile has been much disputed.


A labyrinthodont amphibian.
  • Former subclass Labyrinthodontia: several families, but no longer considered to be a single group.
Example sentences
  • Curiously, labyrinthodonts are not found in the Otways - crocodiles apparently filled the same ecological niche.
  • Two main types of early amphibians include the large powerfully built labyrinthodonts and the small, slender lepospondyls.
  • All of these Palaeozoic and early Mesozoic amphibians are called labyrinthodonts and lepospondyls, based on features of their teeth and vertebrae.


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

For editors and proofreaders

Line breaks: laby¦rinth|odont

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