1985Microtrypa estonica sp. nov. — Rõõmusoks, pp. 137, fig. pl. 3: 1-8 (non fig. 9
2004Trigrammaria estonica (Rõõmusoks, 1985) — Rõõmusoks, pp. 32-33, fig. pl. 9: 1-3
Selection of related publications
Rõõmusoks, A. 2004.
Ordovician strophomenoid brachiopods of northern Estonia.Fossilia Baltica 3, pp. 1-151.
Rõõmusoks, A. 1985.
The genera Trigrammaria and Microtrypa (Strophomenidae) in the Ordovician of Baltoscandia.Eesti NSV Teaduste Akadeemia Toimetised. Geoloogia / Известия Академии наук Эстонской ССР. Геология34,
4,133-140. DOI:10.3176/geol.1985.4.03