Psammodontidae

Psammodontidae is an extinct family of holocephalans (sometimes referred to as bradyodonts)^[1] known from the Carboniferous and Permian periods.^[2] It is the only family of the order Psammodontiformes.^[2] The order and family are named for the type genus, Psammodus, and all members are believed to have been durophagous nektobenthic carnivores.^[3] The only described remains assigned to Psammodontidae are isolated tooth plates.^[1]

Psammodontidae Temporal range: Carboniferous–Permian PreꞒ Ꞓ O S D C P T J K Pg N
Articulated tooth-plates of the psammodont Archaeobatis
Isolated tooth-plate of the type genus Psammodus
Scientific classification
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