Petalodontidae

Petalodontidae Temporal range: Lower Carboniferous to Permian
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Holocephali
Order:	Petalodontiformes
Family:	†Petalodontidae Newberry & Worthen, 1866
Genera
†Ageleodus †Antliodus †Chomatodus †Ctenoptychius †Glyphanodus †Harpacodus †Lisogodus †Neopetalodus †Paracymatodus †Petalodus †Polyrhizodus †Serratodus †Siksika †Tanaodus

Petalodontidae is an extinct family of marine cartilaginous fish related to modern day chimaera found in what is now the United States of America and Europe. With a very few exceptions, they are known entirely from teeth. All fossils range from the Carboniferous to the Permian, where they are presumed to have died out during the Permian/Triassic extinction event.

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