NMITA: Neogene Marine Biota of Tropical America 

Radimella confragosa (Edwards, 1944)

SEM Photograph:. (Borne and Cronin, ms, pl. 1, fig. 1) Scale is 0.06 mm. (Locality CJ89-20-11: Río Banano, Limón Province, Costa Rica; Río Banano Formation). Left valve, female.

Morphologic Description: Characterized by coarse reticulation and pronounced anterior cardinal angle, slightly bent dorsal margin. The dorsal ridge system pronounced and sloping rather steeply forward (Bold, 1988).

Holotype: USNM 559423 (Pit on west side of US Highway 74, north side of Lumber River near Lumberton, North Carolina, Duplin Marl, Pliocene).


  • Upper Miocene to Pleistocene (?Recent): U.S. Atlantic and Gulf Coasts, Mexico, Costa Rica, Columbia, Venezuela, Trinidad, Greater Antilles (Bold, 1988).
  • Pliocene to Recent previously occurrences have been reported from Cuba and the seas off Jamaica (Fithian, 1980). In Belize this species is restricted to the carbonate platforms (Teeter, 1975).


    To view genus description return to Genus Page.

    Last updated October 10, 1997 - jpd