Diplocidaris is an extinct genus of sea urchins belonging to the family Diplocidaridae. The type species of this genus is Cidaris gigantea Agassiz, 1840.Natural History Museum
These slow-moving low-level epifaunal grazer-omnivores lived in the Jurassic period, from 161.2 to 150.8 Ma. Fossils of this genus have been found in the sediments of Europe, North Africa, Madagascar.
Species Diplocidaris gigantea (Agassiz, 1840) Diplocidaris besairiei Lambert, 1936 Diplocidaris jacquemonti Lambert, 1910 Diplocidaris desori Wright, 1858 Diplocidaris dumortieri Cotteau, 1863 Diplocidaris gevreyi Lambert in Savin 1902 Diplocidaris bernasconii Bischof, Hostettler & Menkveld-Gfeller, 2018
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