Keupp and Mutterlose, 1994
From dinoflaj2
Keupp, H. and Mutterlose, J., 1994: Calcareous phytoplankton from the Barremian/Aptian boundary interval in NW Germany. Cretaceous Research, v.15, p.739-763.
Keupp, H. and Mutterlose, J., 1994: Calcareous phytoplankton from the Barremian/Aptian boundary interval in NW Germany. Cretaceous Research, v.15, p.739-763.
