Sphaerina

Citations total:
3
link From To Geolocation Author - title Year
original Middle Jurassic USSR(Ukrainian SSR) Malyavkina,V.S. Determination key of spores and pollen, Jurassic-Cretaceous 1949
details Nd Nd Potonie,R. Synopsis of the genera of the sporae dispersae. Part 2 1958
details Nd Nd Potonie,R. Synopsis of the genera of the sporae dispersae. Part 3 1960