No cladistic analysis of this group has yet been undertaken. However, Mintz (1968, text-fig. 6) did provide an unsupported phylogenetic tree suggesting possible derivation of Spatangoida and Holasteroida from amongst disasteroid taxa.
In the absence of a phylogenetic hypothesis the following pragmatic scheme is used here. It is not clear how many of these families will turn out to be paraphyletic grades.
Genus Collyrites Desmoulins, 1853
Genus Cyclolampas Pomel, 1883
Genus Cardiopelta Pomel, 1883
Genus Proholaster Gauthier, 1896
Genus Cardiolampas Pomel, 1883
The following papers are key sources of primary data on this group:
Jesionek-Szynanska, W. 1963. Echinides irreguliers du Dogger de Pologne. Actes Palaeontologica Polonica 8(3), 293-396.
Mintz, L. W. 1968. Echinoids of the Mesozoic families Collyritidae d'Orbigny, 1853 and Disasteridae Gras, 1848. J ournal of Paleontology 42, 1272-1288.
Solovjev, A. 1971. Late Jurassic and Early Cretaceous disasterids of the USSR. Transactions of the Palaeontological Institute, Academy of Sciences of the USSR 131, 1-120, pls 1-16 [in Russian].