Catopygus Temporal range: 112.6–55.8 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Catopygus laevis
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Echinoidea
Superorder:	Neognathostomata
Family:	Nucleolitidae
Genus:	†Catopygus
Species
†Catopygus aequalis †Catopygus rodriguezi

Catopygus is an extinct genus of sea urchins in the family Nucleolitidae.

• List of prehistoric echinoid genera
• List of prehistoric echinoderm genera

• "Catopygus". Paleobiology Database. Retrieved 25 September 2016.
• "Catopygus". The Encyclopedia of Life.