Ptychopentaporina

Citations total:
3
link From To Geolocation Author - title Year
details Nd Nd Naumova,S.N. Spores and pollen of coals of the USSR. 1939
details Nd Nd Pant,D.D. Suggestions for the classification and nomenclature of fossil spores and pollen grains 1954
details Nd Nd Potonie,R. Synopsis of the genera of the sporae dispersae. Part 3 1960