Heptasphaera

Citations total:
3
link From To Geolocation Author - title Year
original Early Barremian W.Germany(Niedersachsen) Keupp,H. Calciodinelloidea from the Blatterton facies of the northwest Germany Lower Barremian. (In: The Blatterton-Facies of the North-West German Lower Cretaceous -Part 1 ) 1979
details Hauterivian Early Albian W.Germany(Niedersachsen) Keupp,H. Calcigonellum Deflandre 1948 and Echinodinella n. gen. (calcareous dinoflagellate cysts) from the Lower Cretaceous of northwest Germany. 1980
details Nd Nd Williams,G.L. et al. The Lentin and Williams Index of Fossil Dinoflagellates.1998 Edition. 1998