Graptolithina

Polygonograptus Bouček, 1957

Selection of related publications
Obut, A. M., Sennikov, N. V. 1981. Polygonograptidae familia nova (sistematika, stratigrafičkskoe i geografičeskoe rasprostranenie). Transactions of the Institute of Geology and Geophysics 482, 75-81. Paleozoic West Siberian Plain and its mountain frame, pp. 75-81.
References based on distribution