Conodont

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [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

From WordNet (r) 2.0 [wn]:

  conodont
       n 1: tiny fossil cone-shaped tooth of the most primitive
            vertebrate: the conodont
       2: small (2 in) 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