Putative freshwater dinoflagellates in a marine section near the Cretaceous/Tertiary boundary in Alabama, USA.
Reference:
Poplawski,S. et al. (1979)
Putative freshwater dinoflagellates in a marine section near the Cretaceous/Tertiary boundary in Alabama, USA. Cretaceous-Tertiary Boundary Events Symposium II. Proceedings.(W.K.Christensen and T.Birkelund,editors). University of Copenhagen
P. 249- 249