Maevarano Formation

Maevarano Formation
Stratigraphic range: Maastrichtian ~70–65.8 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Sub-units	Masorobe, Anembalemba & Miadana Members
Underlies	Berivotra Formation
Overlies	Marovoay Beds
Thickness	>105 m (344 ft)
Lithology
Primary	Sandstone
Other	Claystone, siltstone
Location
Coordinates	15°54′S 46°36′E / 15.9°S 46.6°E / -15.9; 46.6
Approximate paleocoordinates	30°06′S 38°24′E / 30.1°S 38.4°E / -30.1; 38.4
Region	Mahajanga Province
Country	Madagascar
Extent	Mahajanga Basin
Type section
Named for	Maevarano River
Named by	Salètes
Year defined	1895
Maevarano Formation (Madagascar)

The Maevarano Formation is a Late Cretaceous sedimentary rock formation found in the Mahajanga Province of northwestern Madagascar. It is most likely Maastrichtian in age,^[1] and records a seasonal, semiarid environment with rivers that had greatly varying discharges. Notable animal fossils recovered include the theropod dinosaur Majungasaurus, the early bird Vorona, the paravian Rahonavis, the titanosaurian sauropod Rapetosaurus, and the giant frog Beelzebufo.