Brachiopoda

Opsiconidion Ludvigsen, 1974

Selection of related publications
Popov L., Nõlvak J., Holmer, L. 1994. Late Ordovician lingulate brachiopods from Estonia. Palaeontology 37, 3, 627-650.
Biernat, G. 1984. Silurian inarticulate brachiopods from Poland. Acta Palaeontologica Polonica 29, 1-2, 91-103.
Popov, L. 1981. The first record of microscopoic inarticulate brachiopods of the family Acrotretidae of the Silurian of Estonia. Eesti NSV Teaduste Akadeemia Toimetised, Geoloogia / Известия Академии наук Эстонской ССР. Геология 30, 1, 34-41.
References based on distribution