'Conodont' definitions:

Definition of 'conodont'

From: WordNet
noun
The tiny fossil cone-shaped tooth of a primitive vertebrate of order Conodonta
noun
Small (2 inches long) extinct eellike fish with a finned tail and a notochord and having cone-shaped teeth containing cellular bone; late Cambrian to late Triassic; possible predecessor of the cyclostomes

Definition of 'Conodont'

From: GCIDE
  • Conodont \Co"no*dont\ (k[=o]"n[-o]*d[o^]nt), n. [Gr. kw^nos cone + 'odoy`s, 'odo`ntos, tooth.] (Zool.) A peculiar toothlike fossil of many forms, found especially in carboniferous rocks. Such fossils are supposed by some to be the teeth of marsipobranch fishes, but they are probably the jaws of annelids. [1913 Webster] Conodonta