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

Main article: Petalodontidae

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