Speeton Clay Formation
Stratigraphic range: Berriasian-Albian 145–100 Ma
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°12′N 0°12′W / 54.2°N 0.2°W / 54.2; -0.2
Approximate paleocoordinates41°00′S 9°18′E / 41.0°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 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]

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. ^ a b c d e f g h i j k l m Underwood et al., 1999
  10. ^ Gale, 2019

Bibliography

Further reading

Categories