The Echkar Formation is a geological formation comprising sandstones and claystones in the Agadez Region of Niger, central Africa.
Description Its strata date back to the Late Albian to Late Cretaceous (Cenomanian stages, about 100-95 million years ago). Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel, David B; et al. (2004). "Dinosaur distribution (Early Cretaceous, Africa)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 571-573. .
Fossil content In Abangarit-Tamesna at Fossilworks.org
Vertebrates Fish Fish of the Echkar Formation Genus Species Material Notes ImagesCeratodusC. sp.LepidotesL. sp.OnchopristisO. numidaPlatyspondylusP. foureaui Dinosaurs
Ornithischians Ornithischians of the Echkar Formation Genus Species Material Notes Images?Stegosauria indet.No genus given. May not actually belong to Stegosauria. Sauropods Sauropods of the Echkar Formation Genus Species Material Notes ImagesAegyptosaurusA. baharijensisRebbachisaurusR. tamesnensisR. sp. Theropods Theropods of the Echkar Formation Genus Species Material Notes ImagesBahariasaurusB. ingensElaphrosaurusE. iguidiensis (=Theropoda indet.)Likely an indeterminate theropod.InosaurusI. tedreftensis Rugops R. primus
Reptiles
Reptiles of the Echkar Formation Genus Species Material Notes Images Araripesuchus A. rattoides ElosuchusE. sp.FortignathusF. felixi Kaprosuchus K. saharicus Laganosuchus L. thaumastos Testudines indet.No genus given.
See also List of dinosaur-bearing rock formations Lists of fossiliferous stratigraphic units in Africa List of fossiliferous stratigraphic units in Niger Geology of Niger
References
Bibliography
Further reading A. F. d. Lapparent. 1953. Gisements de Dinosauriens dans le "Continental intercalaire" d'In Abangarit (Sahara méridional) [Dinosaur localities in the "Continental Intercalaire" of In Abangarit (southern Sahara)]. Comptes Rendus de l'Académie des Sciences à Paris 236:1905-1906 P. C. Sereno, J. A. Wilson, and J. L. Conrad. 2004. New dinosaurs link southern landmasses in the mid-Cretaceous. Proceedings of the Royal Society of London B 271(1546):1325-1330