The Speeton Clay Formation (SpC)[1] is a Lower
Cretaceous geological
formation in
Yorkshire, northern
England. Unlike the contemporaneous terrestrial
Wealden Group to the south, the Speeton Clay was deposited in marine conditions. The most common fossils in the unit are
belemnites, followed by
ammonites and the
lobsterMeyeria ornata.
Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific
genus.[2]
Gale, A.. 2019. Thoracican cirripedes (Crustacea) from the Hauterivian (Lower Cretaceous) of Hannover, northern Germany. Proceedings of the Geologists' Association 130. 659-672. .
Benson, R. B. J., and P. S. Druckenmiller. 2014. Faunal turnover of marine tetrapods during the Jurassic–Cretaceous transition. Biological Reviews 89. 1-23. .
Norman, D. B., and P. M. Barrett. 2002. Ornithischian dinosaurs from the Lower Cretaceous (Berriasian) of England. Special Papers in Palaeontology 68. 161-189. .
Underwood, C. J.; S. F. Michell, and K. J. Veltkamp. 1999. Shark and Ray teeth from the Hauterivian (Lower Cretaceous) of north-east England. Palaeontology 42. 287-302. .