Slimani et al., 2008
From dinoflaj3
Slimani, H., Louwye, S., Toufiq, A., Verniers, J. and de Coninck, J., 2008: New dinoflagellate cyst species from Cretaceous-Palaeogene boundary deposits at Ouled Haddou, south-eastern Rif, Morocco. Cretaceous Research, v.29, p.329-344.