†Helodiadema (sea urchin)
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Parent taxon: Diadematoida according to H. B. Fell 1966
See also Sepkoski 2002
Sister taxa: Ancylocidaris, Diadematidae, Diadematoina, Endeodiadema, Engelia, Heteropedina, Macrodiadema
Subtaxa: none
Ecology: slow-moving low-level epifaunal grazer
Distribution: there are no occurrences of Helodiadema in the database
Specimen images are retrieved through the ePANDDA API.
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