ZPAL Tr. II

Carboniferous trilobites (Otarionidae, Cyrtosymbolinae, Brachymetopus) from Poland and Eurasia
Distribution of specimens from the collection
Publications
H. Osmólska. 1968; Contributions to the lower Carboniferous Cytrosymbolinae (Trilobita). Acta Palaeontologica Polonica 13 (1): 119-150.