Subfamily Clypeasterinae Agassiz 1836 (sand dollar)
Echinoidea - Clypeasteroida - Clypeasteridae
Full reference: L. Agassiz. 1836. Prodrome d'une monographie des radiaires ou échinodermes. Mémoires de la Société des Sciences Naturelles de Neuchâtel 1:168-199
Parent taxon: Clypeasteridae according to A. Kroh and A. B. Smith 2010
Sister taxa: Ammotrophinae, Arachnoidinae, Clypeaster, Diplothecanthus
Subtaxa: none
Ecology: slow-moving semi-infaunal detritivore
Distribution: there are no occurrences of Clypeasterinae in the database