The type species of Echanthus and Gitolampas are very similar and are most likely congeneric (Kier, 1962, p. 210). Both have a similar shape, with the greatest width posterior to the centre, a pointed posterior extremity, broad petals, and a similar floscelle.
Cooke (1942, p. 211) erected this genus for Echinanthus Desor (1858) non Leske (1778), because he believed Desor's Echinanthus to be preoccupied.
C. W. Cooke. 1959. Cenozoic echinoids of eastern United States. United States Geological Survey, Professional Paper, 321, 106 pp., 43 pls.
P. M. Kier. 1962. Revision of the cassiduloid echinoids. Smithsonian Miscellaneous Collections 144, (3), 262 pp.