Poretskaya, E. S. 1974. [Echinoidea]. Pp. 360-368 in V. T. Akopjana (ed.) [Atlas of the fossil fauna of the Armyanskog SSR] Akademiya Nauk Armyanskog SSR, Erevan. page(s): 364-365; pl. 185, figs. 2а-в, 3 [details]
original descriptionPoretskaya, E. S. 1974. [Echinoidea]. Pp. 360-368 in V. T. Akopjana (ed.) [Atlas of the fossil fauna of the Armyanskog SSR] Akademiya Nauk Armyanskog SSR, Erevan. page(s): 364-365; pl. 185, figs. 2а-в, 3 [details]