Fisher and Riley, 1980
From dinoflaj2
Fisher, M.J. and Riley, L.A., 1980: The stratigraphic distribution of dinoflagellate cysts at the boreal Jurassic-Cretaceous boundary. 4th International Palynology Conference, Lucknow, 1976-77, Proceedings, v.2, p.313-329, pl.1-4.
