Brachiopoda

Trigrammaria Wilson, 1945

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. Proceedings of the Academy of Sciences of the Estonian SSR. Geology 34, 4, 133-140.
References based on distribution