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Superfamily Histocidaroidea Lambert, 1900, p. 49

[ex Histocidaridea Kroh & Smith, 1910, p. 169]

Diagnosis	Cidaroids with: test with tesselate sutures primary tubercles perforate and strongly crenulate primary tubercles confluent adorally and ambitally; scrobicular tubercles differentiated; extrascrobicular tuberculation heterogeneous ambulacra straight primary spines long, cylindrical with simple unbranched cortical hairs secondary spines slender, simple and unflattened.
Species Included	Only one family, Histocidaridae, is included.
Classification and/or Status	Cidaroidea, Cidaroida
Remarks	Kroh & Smith (2010, p. 169) first used this taxon at superfamily rank. Lambert, J. 1900. Étude sur quelques Échinides de l'Infra-Lias et du Lias. Bulletin de la Société des Sciences Historiques et Naturelles de l'Yonne 52 (1899)(2), 3-57. Kroh, A. & Smith, A. B. 2010. The phylogeny and classification of post-Palaeozoic echinoids. Journal of Systematic Palaeontology 7, 147-212.