Citations total:
link From To Geolocation Author - title Year
original Tournaisian Namurian USSR(Kazakh SSR) Lyuber,A.A. Atlas of spores and pollen of the Paleozoic deposits of Kazakhstan. 1955
details Nd Nd Potonie,R. Synopsis of the genera of the sporae dispersae. Part 2 1958
details Late Visean Namurian USSR(Kazakh SSR) Orlov,I.V. et al. On the question of the age of the Coal-bearing Suite of the Karaganda Basin and of the PossibiliIty of their correlation with Upper Palaeozoic deposits of other Regions of Central Kazakhstan 1960