Ankazomihaboka Formation

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. The formation is overlain by the Marovoay Beds and overlies basalt.
Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.