†Hypodiadema Desor 1858 (sea urchin)
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Echinoidea - Euechinoidea - Pseudodiadematidae
Full reference: E. Desor. 1858. Synopsis des échinides fossiles. Reinwald, Paris 1-490
Parent taxon: Pseudodiadematidae according to H. B. Fell and D. L. Pawson 1966
See also Clark and Twitchell 1915 and Sepkoski 2002
Sister taxa: Acrocidaris, Heterodiadema, Loriolia, Microdiadema, Polydiadema, Tetragramma, Tiaromma
Subtaxa: Hypodiadema balsami Hypodiadema elegans
Ecology: epifaunal grazer-deposit feeder
Distribution:
• Cretaceous of United States (1: Arkansas collection)
• Jurassic of Italy (1), Saudi Arabia (1), Somalia (1)
• Triassic of Italy (1)
Total: 5 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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