Les Algues du ‘Calcaire rosé de Timahdite’ (eocène inférieur) dans le Moyen-Atlas (Maroc): description d'Halimeda nana Pia, 1932, dans sa localité-type et son paléoenvironnement

Abstract

The beds with Halimeda nana Pia contain in the type-locality of Timahdite (Middle-Atlas, Morocco) a lot of badly preserved and incomplete Dasycladales like Broeckella, Dissocladella, Neomeris, Acicularia, fragments of Zittelina, Carpentella and unditerminable Bornetellae, as one fragment of Archeolithothamnium, lost within all these green Algae. These beds belong to the Timahdite pink limestone, previously studied by Pia et al. (1932, Notes et Mem., Serv. Géol. Maroc, 20, 13–18) and intercalated in a formation which, assigned to the Paleocene-Lutetian interval, fills up the axis of the El Koubbat syncline.