Ankarafantsika Formation

The Ankarafantsika Formation is a Late Cretaceous (Cenomanian) geologic formation of the Mahajanga Basin in the Boeny region of Madagascar, Africa. The fine-grained sandstones of the formation were deposited in a fluvial to lacustrine environment.

Fossil content
The following fossils have been reported from the formation:
 * Sauropoda indet.