conodont

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Related to Euconodonta: Paraconodonta, Protoconodonta

conodont

a tooth-like fossil, amber in colour. Conodonts occur in sediments from the CAMBRIAN to the TRIASSIC and are thought to be associated with the mouth-parts of primitive chordates such as members of the AGNATHA.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005