Columbia subject headings:
Paleobotany--Cenozoic.
Paleobotany--Mesozoic.
Palynology--Russia (Federation)--Siberia.
Harvard subject headings:
Dinoflagellates, Fossil--Russia (Federation)--Siberia.
Paleobotany--Cenozoic
Paleobotany--Cretaceous
Paleobotany--Mesozoic
Palynology--Cenozoic.
Palynology--Mesozoic.
Palynology--Russia (Federation)--Siberia.
Princeton subject headings:
Dinoflagellates, Fossil--Russia (Federation)--Siberia.
Paleobotany--Cretaceous.