Petalodontiformes

Petalodontiformes ("thin-plate teeth") is an extinct order of cartilaginous fish. They are related to the modern-day chimaera found in what is now the United States and Europe. 

 Petalodontidae 

 †Ageleodus
 †Antliodus
 †Chomatodus
 †Ctenoptychius
 †Glyphanodus
 †Harpacodus
 †Lisogodus
 †Neopetalodus
 †Paracymatodus
 †Petalodus
 †Polyrhizodus
 †Serratodus
 †Siksika
 †Tanaodus

Category:Extinct fish
Category:Cartilaginous fish