Tripneustes (Hipponoe) Gray 1840
Echinoidea - Camarodonta - Echinidae
Alternative spelling: Hipponoe
Parent taxon: Tripneustes according to W. S. W. Kew 1920
See also Kew 1914
Sister taxa: Tripneustes depresss, Tripneustes esculenta, Tripneustes gratilla, Tripneustes magnificus, Tripneustes pregratilla
Subtaxa: Tripneustes (Hipponoe) californicus
Distribution: found only at UC 2064 - Coyote Mountain [Imperial Fm] (Pliocene of California)