The Lapurr Sandstone, also spelled Lapur Sandstone, previously considered part of the informal "Turkana Grits", is a geological formation in Kenya (Turkana County). It is the oldest unit in the Turkana Basin. The strata date back to the Late Cretaceous, likely Campanian to Maastrichtian, based on palynology and the presence of dyrosaurs and mosasaurs, the upper part of the unit likely extends into the Palaeogene, based on zircon dating.[1] It predominantly consists of fine-coarsearkosicsandstone, which has been interpreted as either been deposited in fluvial or shallow marine conditions.[2][1] Dinosaur remains among other vertebrates have been recovered from it around Lokitaung Gorge, though these mostly consist of heavily abraded, isolated bones of robust morphology like sauropod limb bones and caudal vertebrae.[3][1]
^Wescott, W.A.; Morley, C.K.; Karanja, F.M. (May 1993). "Geology of the "Turkana Grits" in the Lariu range and Mt. Porr areas, southern Lake Turkana, Northwestern Kenya". Journal of African Earth Sciences (and the Middle East). 16 (4): 425–435. Bibcode:1993JAfES..16..425W. doi:10.1016/0899-5362(93)90101-U.
^ abcWeishampel, et al. (2004). "Dinosaur distribution" Pp. 517-607. in Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN0-520-24209-2. " Pp. 517-607.
^Sertich, J., O’Connor, P., Seiffert, E. & Manthi, F. 2013. A giant abelisaurid theropod from the latest Cretaceous of Northern Turkana, Kenya. Journal of Vertebrate Paleontology, SVP Program and Abstracts Book, 2013, pp211.
^O'Connor PM, Sertich JJW, Manthi FK (2011) A pterodactyloid pterosaur from the Upper Cretaceous Lapurr sandstone, West Turkana, Kenya. Anais da Academia Brasileira de Ciências 83: 309–315.