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nounsmall (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 cyclostomestype of:
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nounthe tiny fossil cone-shaped tooth of a primitive vertebrate of order Conodontatype of:
Definition that contains conodont
- ordovician from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds
- conodont the tiny fossil cone-shaped tooth of a primitive vertebrate of order Conodonta
- ordovician period from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds