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Table 1 Shallow-water regular echinoids of the tropical western Atlantic considered herein (culled from Serafy 1979, Table 2; Hendler et al. 1995)

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

Species

Depth range (m)

Order Cidaroida

 Eucidaris tribuloides (De Lamarck, 1816)

 Stylocidaris affinis (Philippi, 1845)

 Tretocidaris bartletti (A. Agassiz, 1880)

0–800

23–1000

48–625

Order Echinothuroida

 Phormosoma placenta Wyville Thomson, 1872

50–3700

Order Diadematoida

 Diadema antillarum (Philippi, 1845)

 Astropyga magnifica A. H. Clark, 1934

 Centrostephanus longispinus (Philippi, 1845)

0–400

11–88

33–310

Order Arbacioida

 Arbacia punctulata (De Lamarck, 1816)

0–225

Order Temnopleuroida

 Genocidaris maculata A. Agassiz, 1869

 Lytechinus variegatus (De Lamarck, 1816)

 Lytechinus williamsi Chesher, 1968

 Tripneustes ventricosus (De Lamarck, 1816)

12–420

0–250

5–92

0–55

Order Echinoida

 Echinometra lucunter (Linné, 1758)

 Echinometra viridis A. Agassiz, 1863

0–45

0–40

  1. For this study, shallow water is considered to be between 0 and 50 m water depth. All are well-represented in the collections of the Department of Invertebrate Zoology, USNM