| original |
Danian |
|
USSR(Krasnoyarsk Kray) |
Bondarenko,N.M. Spores and pollen from deposits of the Datsk (?) Stage of the depression of the Yenisei Estuary and their stratigraphic significance. |
1968 |
| details |
Danian |
|
USSR(Siberia) |
Chlonova,A.F. The distribution of Orbiculapollis pollen at the Cretaceous-Paleogene boundary. (In: Stratigraphy and Palynology of the Mesozoic and Cenozoic of Siberia. V.S.Volkova, editor) |
1979 |
| details |
Maastrichtian |
|
Worldwide |
Zaklinskaya,E.D. Synopsis |
1979 |
| details |
Danian |
|
Nd |
Chlonova,A.F. Form-genus Orbiculapollis Chlonova, 1961. (In: Synopsis: Key and Correlative Taxa (Late Cretaceous - Paleogene) angiosperm pollen (Reference Manual). M.A.Petrosyants, editor) |
1979 |