Twenty-two ammonite species are identified in the upper Albian Mortoniceras (Subschloenbachia) rostratum, Mortoniceras (Subschloenbachia) perinflatum and Stoliczkaia (Shumarinaia) africana Zones, and in the lower Cenomanian Mantelliceras mantelli Zone. The species Placenticeras Saadensis Thomas and (Thomas and Peron, 1890, 1890 is revised, including Engonoceras Thomasi Pervinquière, 1907, and is placed within the genus Hypengonoceras Spath, 1922. This accurate biostratigraphic framework allowed to evidence, at the Albian-Cenomanian transition (S. (S.) africana Zone), a significant sea level drop, responsible for emergence and erosion to the SE, and for deposition of a Lowstand wedge to the NW, fed by erosional channels on the shelf slope. Plesiosaur remains found in the upper Albian series (base of M. (S.) rostratum Zone) represent one of the few elasmosaurids known worldwide in the Albian, and the first plesiosaurian reported from Tunisia.

二十二个菊物种在上部阿尔布识别Mortoniceras（Subschloenbachia）喙，Mortoniceras（Subschloenbachia）perinflatum和Stoliczkaia（Shumarinaia）AFRICANA区域，并在较低的森诺曼Mantelliceras mantelli区。修改了Placenticeras Saadensis Thomas和（Thomas and Peron，1890，1890）的物种，包括Engonoceras ThomasiPervinquière，1907，并放置在Hypengonoceras属中Spath，1922年。这种精确的生物地层学框架可以证明，在Albian-Cenomanian过渡期（非洲南部地区），海平面显着下降，造成了SE的出现和侵蚀，以及低水位的沉积。由架子斜坡上的侵蚀通道向西北倾斜。蛇颈龙遗骸出现在上层阿尔比亚系列（M.（S.）rostratum Zone的基地）中，代表着在阿拉伯世界上为数不多的蛇龙科之一，也是突尼斯首次报道的蛇颈龙。