The Westbury Formation is a geological formation in England, one of the Penarth Group.

It dates back to the Rhaetian.

[1] The formation is named after the village of Westbury-on-Severn in Gloucestershire.

[2] The remains of a giant shastasaurid and dinosaurs are known from the formation.

[3][4] Camelotia[1] C. borealis[1] "Vertebrae, pubis, ischium, femur, tibia, phalanges, adult.