The Echinoid Directory

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Order Galeropygoida Mintz, 1968, p. 1287

Diagnosis	"Endocyclic Atelostomata with weakly developed floscelle and nondisjunct apical system." (Mintz 1968: p. 1287)
Species Included	Originally Mintz (1968: p. 1286) included the following taxa: Galeropygus Cotteau, 1856 Hyboclypus L. Agassiz, 1839 Ressopygus Pomel, 1883
Remarks	Order not used in classifications by subsequent authors. As shown by the recent phylogenetic analysis of Barras (2007: p. 150), the order as defined by Mintz (1968) is paraphylletic due to the inclusion of Hyboclypus but exclusion of more derived taxa within the clade. Mintz, L. W. 1968. Echinoids of the Mesozoic families Collyritidae d'Orbigny, 1853 and Disasteridae Gras, 1848. Journal of Paleontology 42, 1272-1288. Barras, C. G. 2007. Phylogeny of the Jurassic to Early Cretaceous 'disasteroid' echinoids (Echinoidea; Echinodermata) and the origins of spatangoids and holasteroids. Journal of Systematic Palaeontology 5, 134-161.