Ampthill Clay

Ampthill Clay
Stratigraphic range: Oxfordian
TypeGeological formation
Unit ofAncholme Group
UnderliesKimmeridge Clay
OverliesWest Walton Formation or Corallian Group
Thickness0-90 m
Lithology
PrimaryMudstone
OtherLimestone, Marl
Location
RegionEngland
CountryUnited Kingdom

The Ampthill Clay is a Mesozoic geological formation in southern England. Dinosaur remains diagnostic to the genus level are among the fossils that have been recovered from the formation.