Tripneustes

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

Species
The genus contains four extant species:

This genus contains many extinct species, such as:


 * Tripneustes antiquus Duncan & Sladen, 1855
 * Tripneustes californicus Kew, 1920
 * Tripneustes gahardensis (Seunes)
 * Tripneustes magnificus Nisiyama, 1966
 * Tripneustes parkinsoni (Agassiz, 1847)
 * Tripneustes pregratilla McNamara and Kendrick 1994
 * Tripneustes proavia Duncan & Sladen, 1855
 * Tripneustes schneideri Boehm
 * Tripneustes tobleri Jeannet, 1928a

Distribution
These sea urchins have been recorded as fossils from Miocene to Recent (from 15.97 to 0.0 Ma). Fossils have been found in the sediments of Southern Europe, Mediterranean and North Africa, Caribbean, Western coast of America and throughout the Indo-Pacific.