The Ankazomihaboka Formation is a Coniacian geologic formation in the Mahajanga Basin of northwestern Madagascar. The formation comprises claystones and sandstones deposited in a fluvial to lacustrine environment.MAD 96 at Fossilworks.org The formation is overlain by the Marovoay Beds and overlies basalt.Rogers et al., 2000, p.280
Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.Weishampel, 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. . " Pp. 517-607.
Fossil content "Titanosaurus" madagascariensis Majungasaurus crenatissimus (theropod indet.) Axelrodichthys sp. Ferganoceratodus madagascariensis
See also List of dinosaur-bearing rock formations List of stratigraphic units with few dinosaur genera List of fossiliferous stratigraphic units in Madagascar Geology of Madagascar
References
Bibliography
Further reading Curry, K. A. 1997. Vertebrate fossils from the Upper Cre-taceous Ankazomihaboka Sandstones, Mahajanga Ba-sin, Madagascar. J. Vertebr. Paleontol. 17(suppl.):40A M. D. Gottfried, R. R. Rogers, and K. A. Curry Rogers. 2004. First record of Late Cretaceous coelacanths from Madagascar. Recent Advances in the Origin and Early Radiation of Vertebrates, in G. Arratia, M. V. H. Wilson, and R. Cloutier (eds.), Verlag Dr. Friedrich Pfeil, München 687-691