Psammodontidae

Psammodontidae is an extinct family of holocephalans (sometimes referred to as bradyodonts) known from the Carboniferous and Permian periods. It is the only family of the order Psammodontiformes. The order and family are named for the type genus, Psammodus, and all members are believed to have been durophagous benthic carnivores. The only remains assigned to Psammodontidae are isolated tooth plates.

Psammodontidae Temporal range:
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Holocephali
Order:	†Psammodontiformes Obruchev, 1953
Family:	†Psammodontidae
Type genus
Psammodus Agassiz, 1834
Genera
†Apodometes †Archaeobatis †Astrabodus †Dimyleus †Homalodus †Mazodus †Mylacodus †Mylax †Pinacodus †Pleurogomphus †Psammodus †Rhymodus