Slimani et al., 2010
From dinoflaj3
Slimani, H., Louwye, S. and Toufiq, A., 2010: Dinoflagellate cysts from the Cretaceous-Paleogene boundary at Ouled Haddou, southeastern Rif, Morocco: biostratigraphy, paleoenvironments and paleobiogeography. Palynology, v.34, no.1, p.90-124, pl.1-10.