Guédé et al., 2014
From dinoflaj3
Guédé, K.É., Slimani, H., Louwye, S., Asebriy, L., Toufiq, A., Ahmamou, M'F., El Amrani El Hassani, I-E. and Digbehi, Z.B., 2014: Organic-walled dinoflagellate cysts from the Upper Cretaceous-lower Paleocene succession in the western External Rif, Morocco: new species and new biostratigraphic results. Geobios, v.47, p.291-304.