original description(ofEchinodiscus subrotundus Leske, 1778 †)Leske, N. G. 1778. Jacobi Theodori Klein naturalis dispositio echinodermatum . . ., edita et descriptionibus novisque inventis et synonomis auctorem aucta. Addimenta ad I. T. Klein naturalem dispositionem Echinodermatum. G. E. Beer, Leipzig, xxii+278 pp., available online athttp://gdz.sub.uni-goettingen.de/dms/load/img/?PID=PPN573613834 page(s): 206-207; pl. 47: fig. 7 [details]