Genus Echionanthus Seba, 1734 (nomen nudum, pre-Linnean) Genus Radiolus auct. † (nomen nudum, name used to denote fossil echinoid spines of various echinoid groups)
basis of record(ofBrisaster indicus Koehler, 1914) Mortensen, T. (1951). A Monograph of the Echinoidea. V, 2. Spatangoida II. Amphisternata II. Spatangidæ, Loveniidæ, Pericosmidæ, Schizasteridæ, Brissidæ, 593 pp., C. A. Reitzel, Copenhagen. page(s): 281 [details]
basis of record(ofEchinarachnius conchatus M'Clelland, 1840) Mortensen, T. (1948). A Monograph of the Echinoidea. IV, 2. Clypeasteroida. Clypeasteridæ, Arachnoidæ, Fibulariidæ, Laganidæ and Scutellidæ. 471 pp., C. A. Reitzel, Copenhagen. page(s): 313, 320 [details]