England

The Oxford Clay, or Oxford Clay Formation, one of the classic formations in British stratigraphy and paleontology, has been studied as a lithologic entity since the early 19th century. This highly fossiliferous marine deposit, which crops out extensively in Central England, was named on the basis of excellent exposures near the historic city of Oxford, in Oxfordshire, England.

The Oxford Clay Formation is composed primarily of argillaceous marine mudstones of Callovian and Oxfordian ages. It is generally subdivided into three units, which has been traditionally been termed the lower, middle and upper Oxford Clay. Cox et al., renamed them in 1992 as the Peterborough Member, the Stewartby Member and the Weymouth Member.


Camptosaurus leedsi - Cambridgehire - Iguanodontia Nomina Dubia - Jurassic Middle Callovian


Callovosaurus leedsi - Oxfordshire - Iguanodontia Nomina Dubia - Jurassic Middle Callovian



Cetiosauriscus stewarti - Cambridgehire - Diplodocidae Diplodocinae - Jurassic Middle Callovian



Eustreptospondylus oxoniensis - Oxfordshire; Buckinghamshire - Tetanurae ?Carnosauria - Jurassic Middle Callovian



Lexovisaurus durobrivensis - Dorset; Cambridgehire, Northamptonshire - Stegosauria Stegosauridae - Jurassic Middle Jurassic Late Callovian Oxfordian Kimmeridgian



Lexovisaurus vetustus - Oxfordshire - Stegosauridae Nomina Dubia - Jurassic Middle Bathonian Callovian



Lexovisaurus durobrivensis [= Stegosaurus priscus] - Cambridgehire - Stegosauria Stegosauridae - Jurassic Middle Jurassic Late Callovian Oxfordian Kimmeridgian



Lexovisaurus durobrivensis [incl. Omosaurus leedsi partim] - Northamptonshire - Stegosauria Stegosauridae - Jurassic Middle Jurassic Late Callovian Oxfordian Kimmeridgian



Loricatosaurus priscus - Peterborough - Stegosauria Stegosauridae - Jurassic Middle Callovian



Omosaurus durobrivensis - Northamptonshire - Stegosauria Stegosauridae - Jurassic Middle Callovian



Omosaurus leedsi - Dorset - Stegosauria Stegosauridae - Jurassic Middle Callovian



Omosaurus vetustus - Oxfordshire - Stegosauridae Nomina Dubia - Jurassic Middle Bathonian Callovian



Sarcolestes leedsi - Cambridgehire - Ankylosauria Nodosauridae - Jurassic Middle Callovian



Stegosaurus priscus - Cambridgehire - Stegosauria Stegosauridae - Jurassic Middle Callovian



Cetiosaurus sp. - Dorset - Sauropoda Cetiosauridae - Jurassic Middle Callovian



Hypsilophodontid indet. - Cambridgehire - Ornithopoda - Jurassic Middle Callovian