Excellent paper that examines the geology and paleontology of what they call the Kem Kem Group that includes the lower Gara Sbaa and upper Douira formations . I will add that the authors view of the dinosaur assemblage in this fauna does not agree with recent publications from other paleontologists. Great images of croc teeth, dinosaur teeth and claws.
It even discusses "that some geographic names are simple errors that gain traction in secondary citations. In a prominent compilation of dinosaur localities, for example, the term “Tegana Formation” was cited for the “Kem Kem beds” (Weishampel et al. 1990). This may have arisen as a misspelling of the “Tegama Group”, a name for Cretaceous age beds in Niger. Although the error was noted (Sereno et al. 1996), it has reappeared in subsequent publications (e.g., Bailey 1997, Kellner and Mader 1997, Taverne and Masey 1999, Weishampel et al. 2004)"
Article ...PDF in that article is +100mb
https://zookeys.pensoft.net/article/47517/