Tripneustes

Tripneustes is a genus of sea urchins belonging to the family Toxopneustidae.

Species

The genus contains four extant species:

Image	Scientific name	Distribution
	Tripneustes depressus Agassiz, 1863	eastern Pacific Ocean, occurring in Mexico, on the western coast of Central America, in Panama, in Ecuador and around the Galápagos Islands
	Tripneustes gratilla	Indo-Pacific, Hawaii, the Red Sea, and The Bahamas.
	Tripneustes kermadecensis Bronstein, Kroh, Tautscher, Liggins & Haring, 2017	southern Pacific Ocean, off the Kermadec Islands
	Tripneustes ventricosus	western Atlantic Ocean, the Caribbean Sea and Gulf of Mexico

This genus contains many extinct species, such as:Tripneustes antiquus Duncan & Sladen, 1855Tripneustes californicus Kew, 1920Tripneustes gahardensis Tripneustes magnificus Nisiyama, 1966 Tripneustes parkinsoni Tripneustes pregratilla McNamara and Kendrick 1994Tripneustes proavia Duncan & Sladen, 1855Tripneustes schneideri BoehmTripneustes tobleri Jeannet, 1928a

Distribution

These sea urchins have been recorded as fossils from Miocene to Recent. Fossils have been found in the sediments of Southern Europe, Mediterranean and North Africa, Caribbean, Western coast of America and throughout the Indo-Pacific.