Itombe Formation

The Itombe Formation is a geological formation of the Kwanza Basin in Angola dated to the Coniacian stage of the Late Cretaceous. The environment of deposition is shallow marine. Reptile fossils have been recovered from the Tadi beds locality within the formation, including the dinosaur Angolatitan,^[1] the mosasaurs Angolasaurus and Mosasaurus iembeensis and the turtle Angolachelys.^[2] The Itombe formation was formerly considered Turonian in age, but new data suggests to be Coniacian.^[3]

Itombe Formation
Stratigraphic range: Coniacian PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Sub-units	Tadi Beds
Underlies	N'Golome Marl
Overlies	Cabo Ledo & Massangano Formations
Thickness	up to 600 m (2,000 ft)
Lithology
Primary	Shale
Other	Limestone, siltstone, sandstone
Location
Coordinates	8.2°S 13.2°E / -8.2; 13.2
Approximate paleocoordinates	23.0°S 1.4°E / -23.0; 1.4
Region	Bengo
Country	Angola
Extent	Kwanza Basin
Itombe Formation (Angola)

See also

• List of fossiliferous stratigraphic units in Angola
• Geology of Angola
• Santos Formation