Palaeodontidae

Palaeodontidae
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	†Thelodonti
Order:	†Thelodontiformes
Family:	†Palaeodontidae Obruchev, 1964
Genera
†Palaeodus †Archodus

Palaeodontidae is an extinct family of thelodont vertebrate agnathans that lived during the Lower Ordovician. The dermal denticles of these thelodonts lack a neck or base and form simple orthodentine cones.[1]

References

1. Obruchev, D. V. "Fundamentals of Paleontology. Vol. 11, Agnatha, Pisces. Israel Program for Scientific Translations, Jerusalem, 1967." (1967): 825.