Willems, 1995a
From dinoflaj2
Willems, H., 1995a: New calcareous dinoflagellates from the Upper Cretaceous white chalk of northern Germany. Review of Palaeobotany and Palynology, v.84, p.57-72, pl.1-4. (Cover date 1994, issue date 1995, according to G. Versteegh, pers. comm.)
