Marnes d'Auzas Formation


The Marnes d’Auzas Formation is a geological Formation in southwestern France whose strata date back to the Late Maastrichtian. It is about 100 metres thick and consists primarily of marls with some interbeds of sandstones. It corresponds to sediments whose depositional environment evolved from the paralic domain at the base of the formation, towards a more continental domain in its upper part. The Marnes d’Auzas Formation was deposited in the west coast of the former Ibero-Armorican Island, which included much of France and Spain.

Vertebrate paleofauna

from the site of Cassagnau 2 in the middle part of the Marnes d'Auzas Formation. Predentary in dorsal and ventral views. Partial left dentary in medial view. Dentary tooth crowns in lingual view. Complete left pubis in lateral view. Left dentary in medial view, belonging to the same individual as the predentary.