Hemicidaris Agassiz 1838 (sea urchin)

Echinoidea - Euechinoidea - Hemicidaridae

Full reference: J.L.R. Agassiz. 1838. Prodromus of a monograph of the Radiata and Echinodermata. Annals and Magazine of Natural History 1:30-449

Parent taxon: Hemicidaridae according to H. B. Fell and D. L. Pawson 1966

See also Clark and Twitchell 1915 and Sepkoski 2002

Sister taxa: Asterocidaris, Cidaropsis, Eurypneustes, Gymnocidaris, Hemitiaris, Hessotiara, Leptarbacia, Plesiocidaris, Pseudocidaris, Sphaerotiaris

Subtaxa: Hemicidaris abyssinica Hemicidaris alpina Hemicidaris confluens Hemicidaris granulosa Hemicidaris icaunensis Hemicidaris intermedia Hemicidaris intumescens

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Ecology: epifaunal grazer-deposit feeder

Distribution:

• Cretaceous of France (3 collections), Switzerland (11)

• Jurassic of Eritrea (1), Ethiopia (1), France (6), Germany (2), Morocco (1), Poland (13), Saudi Arabia (2), Somalia (2), the United Kingdom (3), United States (1: California), Yemen (1)

Total: 47 collections including 52 occurrences

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Specimen images are retrieved through the ePANDDA API.


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