Ambonosphaera utera
- Citations total:
- 2
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| details | Berriasian | Valanginian | USSR(Siberia) | Shulgina,N.I. et al. Distribution of ammonites, foraminifera and dinoflagellate cysts in the Lower Cretaceous reference sections of Khatanga Basin, and Boreal Valanginian biogeography. | 1994 |
| details | Nd | Nd | Stover,L.E. et al. Mesozoic-Tertiary dinoflagellates, acritarchs and Prasinophytes. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) | 1996 |