†family Hemicidaridae Wright 1857 (sea urchin)

Echinoidea - Euechinoidea - Hemicidaridae

Full reference: T. W. Wright. 1857. Monograph on the British fossil Echinodermata of the Oolitic Formations. Volume 1: the Echinoidea. Monographs of the Palaeontographical Society 1-154

Parent taxon: Carinacea according to A. Kroh and A. B. Smith 2010

See also Fell and Pawson 1966

Sister taxa: Calycina, Irregularia, Orthopsidae, Pseudodiadematidae

Subtaxa: Asterocidaris Cidaropsis Eurypneustes Gymnocidaris Hemicidaris Hemitiaris Hessotiara Plesiocidaris Pseudocidaris Sphaerotiaris

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Type: Hemicidaris

Ecology: epifaunal grazer-deposit feeder

Distribution:

• Cretaceous of France (4 collections), Hungary (2), Morocco (1), Portugal (8), Switzerland (11)

• Jurassic to Cretaceous of China (1)

• Jurassic of Algeria (7), Eritrea (1), Ethiopia (2), France (8), Germany (3), Italy (1), Madagascar (1), Morocco (2), Poland (13), Portugal (25), Saudi Arabia (32), Somalia (2), Switzerland (2), Tunisia (18), the United Kingdom (3), United States (1: California), Yemen (2)

Total: 150 collections including 180 occurrences

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