conodont

Definitions

1. Any of several extinct fish-like chordates having cone-like teeth.
2. A microfossil tooth of such an animal.

Examples

“Remains of conodonts, which may be invertebrates or primitive vertebrates, have⟳ also become⟳ known from the tuffites and bituminous slates of Monte San Giorgio, which became famous for their fish⟳ and marine reptile remains.”

“The appearance of tiny teeth elements of an eel-like jawless animal called a conodont, specifically Hindeodus parvus, is the technical herald of the age of the dinosaurs according to the ICS.”

“The beginning and the end⟳ of the Permian are both defined by the first appearances of particular conodont species.”

CEFR level