The fossil fauna of the Kimmeridge Clay includes turtles, crocodiles, sauropods, plesiosaurs, pliosaurs and ichthyosaurs, as well as a number of invertebrate species.

[2] Onshore, it is of Late Jurassic (Kimmeridgian) age and outcrops across England, in a band stretching from Dorset in the south-west, north-east to North Yorkshire.

Offshore, it extends into the Lower Cretaceous (Berriasian Stage) and it is found throughout the Southern, Central and Northern North Sea.

[3] Kimmeridge Clay is of great economic importance,[2] being the major source rock for oil fields in the North Sea hydrocarbon province.

Wiltshire remains include specimens previously referred to Omosaurus armatus and O.

Omosaurus[6] O.armatus[6] O. hastiger[6] Indeterminate ornithomimmid remains have been found in Dorset, England.

"[24] Remains previously referred to Ischyrosaurus manseli are now regarded as indeterminate sauropod material.

1 Partial skeleton, CAMSM J.35991 A thalassophonean pliosaurid; previously assigned to the nomen dubium P. brachyspondylus[33][34] P. sp.