Trilobita

Acernaspis Campbell, 1967

Selection of related publications
Männil, Ralf 1987. Explanatory notes to the stratigraphical chemes of the Ordovician deposits. Resolutions of the interdepartmental stratigraphical conference on the East European Platform in 1984, with regional stratigraphical schemes, pp. 17-57.
Männil, Reet 1970. Estonian Lower and Middle Llandoverian trilobites of the genus Acernaspis. Proceedings of the Academy of Sciences of the Estonian SSR. Chemistry and Geology 19, 2, 156-165.
Männil, Reet 1970. Phacopid trilobites of the Upper Llandoverian of Estonia. Proceedings of the Academy of Sciences of the Estonian SSR. Chemistry and Geology 19, 4, 342-349.
References based on distribution