The internal morphology of primary spines of extant regular echinoids in the tropical western Atlantic: a SEM atlas

Swiss Journal of Palaeontology

Table 2 Shallow-water regular echinoids of the tropical western Atlantic not considered herein (culled from Serafy 1979, Table 2; Pawson et al. 2009)

Species	Depth range (m)
Order Cidaroida Cidaris abyssicola (A. Agassiz, 1869) Cidaris rugosa (H. L. Clark, 1907) Steroeocidaris ingolfiana Mortensen, 1903	13–800 46–790 0–800
Order Temnopleuroida Lytechinus callipeplus H. L. Clark, 1912 Pseudoboletia maculata Troschel, 1869	22–350 12–155

For this study, shallow water is considered to be between 0 and 50 m water depth