In Panama this species has been collected in the eastern Pacific from Tortola Island (USNM 1021518, depth 5 m), from between Tortola and Tortolita Islands (Centroid Latitude: 8.8639, Centroid Longitude: -79.5619, depth 6 m), Panama Bay; from South of Rey Island (USNM 34212; Centroid Latitude: 8.0833, Centroid Longitude: -78.8500, depth 60 m) and from Saint Elmo Bay, Rey Island (USNM E 7602, depth 4 to 7 m), Perlas Archipelago, Gulf of Panama, eastern Pacific.
Mortensen, T. (1948). A monograph of the Echinoidea 4(2). Clypeasteroida. Copenhagen. 471 pp., 258 figures, 72 pls; pages: 109-112.
LSID urn:lsid:marinespecies.org:taxname:513196Clypeaster (Stolonoclypus) rotundus A. Agassiz, 1863 (subgeneric subdivision of Clypeaster not accepted by scientific community)
Clypeaster riisei Lütken, 1864 (subjective junior synonym)
Stolonoclypus rotundus A. Agassiz, 1863 (transferred to Clypeaster)
