Mackunda Formation

Mackunda Formation
Stratigraphic range: Cenomanian ~
Type	Geological formation
Unit of	Rolling Downs Group
Underlies	Winton Formation
Overlies	Allaru Formation
Thickness	Up to 275 m (902 ft)
Lithology
Primary	Sandstone, siltstone, shale, marl
Location
Coordinates	22°44′03″S 142°08′30″E
Approximate paleocoordinates	52.9°S 132.0°E / -52.9; 132.0
Region	Queensland
Country	Australia
Extent	Eromanga Basin
Mackunda Formation (Australia)

The Mackunda Formation is a geological formation in Queensland, Australia whose strata date back to the Cenomanian stage of the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation. It consists primarily of interbedded and cross bedded greensand, with variably calcareous shale, with local ferricrete.