Diplocidaris is an extinct genus of sea urchins belonging to the family Diplocidaridae.

The type species of this genus is Cidaris gigantea Agassiz, 1840.

[2] These slow-moving low-level epifaunal grazer-omnivores [1] lived in the Jurassic period, from 161.2 to 150.8 Ma.

[1] Fossils of this genus have been found in the sediments of Europe, North Africa, Madagascar.

This prehistoric echinoidea-related article is a stub.