1977Cyclospira circularis sp. nov. — Rubel, pp. 212-213, fig. pl. 1: 1-7
Selection of related publications
Rubel, M. 1977.
Revision of Silurian Dayiacea (Brach.) from the North-East Baltic.Eesti NSV Teaduste Akadeemia Toimetised. Keemia, Geoloogia / Известия Академии наук Эстонской ССР. Химия. Геология26,
3,211-220. DOI:10.3176/chem.geol.1977.3.08