Duntulm Formation

Duntulm Formation
Stratigraphic range: Bathonian PreꞒ Ꞓ O S D C P T J K Pg N ↓
Exposures of limestone of the Duntulm Formation on the foreshore near Duntulm, Skye
Type	Formation
Unit of	Great Estuarine Group
Underlies	Kilmaluag Formation
Overlies	Valtos Sandstone Formation
Thickness	Up to 55 m
Lithology
Primary	Oyster beds
Other	Sandstone, Siltstone, Shale
Location
Region	Scotland
Country	United Kingdom
Type section
Named for	Duntulm

The Duntulm Formation is a sedimentary geologic formation deposited in the Inner Hebrides, Scotland. The formation was previously known as the 'Lower Ostrea Beds', and dates to the Bathonian stage of the Middle Jurassic. ^[1][2] The formation is noted for its highly fossiliferous oyster beds, which compose of the species Praeexogyra hebridica. ^[1] The sedimentary sequence also forms part of the Great Estuarine Group.