Lentin et al., 1994
From dinoflaj2
Lentin, J.K., Fensome, R.A. and Williams, G.L., 1994: The stratigraphic importance of species of Sumatradinium, Barssidinium and Erymnodinium, Neogene dinoflagellate genera from offshore eastern Canada. Canadian Journal of Earth Sciences, v.31, p.567-582.
