The first record of the extinct nautiloid Aulaconautilus Spath, 1927 (Pseudonautilidae, Nautilida) in the lower Cretaceous of the Morocco Atlantic margin

The extinct nautiloid genus Aulaconautilus Spath (Pseudonautilidae, Nautilida), bearing distinctive longitudinal ribs on the venter, is reported for the first time in the Lower Cretaceous of the Morocco Atlantic margin, with the discovery of Aulaconautilus druzczici Shimansky from Berriasian strata of the Zalidou section. This paper is an opportunity to provide an update in the knowledge of the genus Aulaconautilus pertaining to the post-Triassic family Pseudonautilidae.