Graptolithina

Atavograptus strachani (Hutt et Rickards, 1970)

Selection of related publications
Ulst, R. Ž., Gailite, L. K., Springis, T. K. 1984. Lithostratigraphic subdivision of the subsurface Ordovician rocks of the Jelgeva Depression. Stratigrafiâ drevnepaleozojskih otloženij Pribaltiki, pp. 63-76.
References based on distribution