Echinoidea - Perischoechinoidea

Full reference: R. T. Jackson. 1912. Phylogeny of the Echini, with a revision of Palaeozoic species. Memoirs of the Boston Society of Natural History 7:1-491

Parent taxon: Perischoechinoidea according to A. Boczarowski 2001

Sister taxa: Bothriocidaroida, Lanternarius, Lepidocentridae, Palaechinoidea

Subtaxa: Aptilechinus, Cavanechinus, Devonocidaris, Echinocyctitidae, Echinocystitidae, Fournierechinus, Ledidocidaris, Lepidesthidae, Tornquistellus

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Ecology: slow-moving low-level epifaunal detritivore