Speeton Clay Formation

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 lobster Meyeria 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]

Speeton Clay Formation
Stratigraphic range: Berriasian-Albian
Speeton Clay Formation at Reighton Sands, North Yorkshire
TypeGeological formation
Unit ofCromer Knoll Group
Sub-unitsMembers A to D
UnderliesHunstanton Formation
OverliesKimmeridge Clay Formation
Thickness100 m (330 ft) in outcrop
Lithology
PrimaryClaystone
OtherGlauconite
Location
Coordinates54.2°N 0.2°W / 54.2; -0.2
Approximate paleocoordinates41.0°S 9.3°E / -41.0; 9.3
RegionYorkshire
Country United Kingdom
ExtentNorth Sea Graben, eastern England
Type section
Named forSpeeton
Speeton Clay Formation is located in the United Kingdom
Speeton Clay Formation
Location of the formation
Meyeria ornata, a lobster from the Speeton Clay

The formation is named after the village of Speeton in North Yorkshire.

Fossil content

The following fossils have been reported from the formation:[3]

See also

References
  1. Speeton Clay Formation - BGS
  2. Weishampel, et al. (2004). "Dinosaur distribution." pp. 517–607.
  3. Speeton Clay Formation at Fossilworks.org
  4. Fischer et al., 2012b
  5. Fischer et al., 2012a
  6. Norman & Barrett, 2002
  7. Mulder & Fraaije, 2016
  8. Benson & Druckenmiller, 2014
  9. Underwood et al., 1999
  10. Gale, 2019

Bibliography
  • Gale, A.. 2019. Thoracican cirripedes (Crustacea) from the Hauterivian (Lower Cretaceous) of Hannover, northern Germany. Proceedings of the Geologists' Association 130. 659-672. .
  • Mulder, E. W. A., and R. H. B. Fraaije. 2016. New records of Early Cretaceous iguanodontian dinosaur remains from the Dutch sector of the North Sea. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 282. 271-277. .
  • Benson, R. B. J., and P. S. Druckenmiller. 2014. Faunal turnover of marine tetrapods during the Jurassic–Cretaceous transition. Biological Reviews 89. 1-23. .
  • Appleby, B.; M. W. Maisch; D. Naish; R. Kosma; J. Liston; U. Joger; F. J. Krüger; J. P. Pérez, and J. Tainsh. 2012b. Correction: New Ophthalmosaurid Ichthyosaurs from the European Lower Cretaceous Demonstrate Extensive Ichthyosaur Survival across the Jurassic–Cretaceous Boundary. PLoS ONE 7(1). .. . doi:10.1371/annotation/9731f93a-c28f-4234-8fd9-c587a103b572
  • Appleby, B.; M. W. Maisch; D. Naish; R. Kosma; J. Liston; U. Joger; F. J. Krüger; J. P. Pérez, and J. Tainsh. 2012a. New Ophthalmosaurid Ichthyosaurs from the European Lower Cretaceous Demonstrate Extensive Ichthyosaur Survival across the Jurassic–Cretaceous Boundary. PLoS ONE 7(1). e29234. . doi:10.1371/journal.pone.0029234 PMID 22235274 PMC 3250416 Bibcode:2012PLoSO...729234F
  • 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. .
  • Lott, G. K.; B. N. Fletcher, and I. P. Wilkinson. 1986. The stratigraphy of the Lower Cretaceous Speeton Clay Formation in a cored borehole off the coast of north-east England. Proceedings of the Yorkshire Geological Society 46(1). 39–56. . doi:10.1144/pygs.46.1.39

Further reading
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