Hemicidaridae

Updated on Dec 18, 2024

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Kingdom Animalia Class Echinoidea Infraclass Carinacea		Phylum Echinodermata Subclass Euechinoidea Rank Family

Similar Hemicidaris, Saleniidae, Phymosomatidae, Pseudocidaris, Arbacioida

Hemicidaridae is a family of fossils sea urchins in the classis Echinoidea.

These epifaunal grazer-deposit feeders lived in Jurassic and Cretaceous ages (from 189.6 to 112.6 Ma).

Taxonomy

List of genera and subfamilies:

Subfamily Hemicidarinae Wright, 1857 †

Asterocidaris Cotteau, 1859 †Gymnocidaris L. Agassiz, 1838 †Hemicidaris L. Agassiz, 1838 †

Subfamily Pseudocidarinae Smith & Wright, 1993 †

Cidaropsis Cotteau, 1863 †Pseudocidaris Pomel, 1883 †Gymnocidaris L. Agassiz, 1838 †Hemicidaris (Sphaerotiaris) Lambert & Thiéry, 1914 †

Fossils of species within this genus have been found in the Jurassic and Cretaceous sediments in Europe, Africa, North America and China.

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