Earth:Chipping Norton Limestone

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Chipping Norton Limestone
Stratigraphic range: Bathonian
~167–165 Ma
The overgrown Hook Norton cutting - geograph.org.uk - 1477457.jpg
Exposure of the Hook Norton Member at Hook Norton Cutting and Banks
TypeFormation
Unit ofGreat Oolite Group
UnderliesFuller's Earth & Sharp's Hill Formations
OverliesGrantham, Northampton Sand & Whitby Mudstone Formations
Thickness0–12 m (0–39 ft)
Lithology
PrimaryLimestone
OtherMudstone
Location
Coordinates [ ⚑ ] : 52°00′N 1°36′W / 52.0°N 1.6°W / 52.0; -1.6
Paleocoordinates [ ⚑ ] 41°36′N 8°48′E / 41.6°N 8.8°E / 41.6; 8.8
RegionEngland
Country United Kingdom
ExtentNorth Gloucestershire, north Oxfordshire
Type section
Named forChipping Norton
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The Chipping Norton Limestone is a geological formation in the Cotswolds, England . It preserves fossils dating back to the Bathonian (Middle Jurassic).[1][2] Including those of dinosaurs Cetiosaurus, Megalosaurus and Cruxicheiros as well as the Tritylodontid Stereognathus. It primarily consists of ooidal limestone.

Fossil content

The so-called "Scrotum humanum" remains may have come from this formation.[1]

Dinosaurs
Genus Species Location Stratigraphic position Material Notes Images
Alocodon[3] Indeterminate[3] Gloucestershire[4] Actually indeterminate ornithischian remains.[4]
Cetiosaurus[5] C. giganteus[6] Oxfordshire[6] Actually indeterminate sauropod remains.[6]
Indeterminate[5]
  • Gloucestershire[4]
  • Oxfordshire[6]
Actually indeterminate sauropod remains.[6]
Dromaeosauridae[7] Indeterminate[7] Oxfordshire[7] Woodeaton Quarry[7] "Teeth"[7] Indeterminate teeth. Remains represent three genera.[7] Same species also present in the Forest Marble Formation.
Megalosaurus[5] Indeterminate[5]
  • Gloucestershire[4]
  • Oxfordshire[6]
Oxfordshire remains later found to be from an indeterminate theropod.[6]
Megalosaurus dinosaur.png
Omosaurus[6] O. vetustus[6] Oxfordshire[6] Actually indeterminate stegosaur remains.[6]
Phyllodon[8] Indeterminate[8] Gloucestershire[4] Actually indeterminate ornithischian remains.[4]
Stegosauria[4] Indeterminate[4] Gloucestershire[4] Previously assigned to Stegosaurus sp. and (tentatively) Omosaurus vetustus.[4]
"Scrotum humanum"
Streptospondylus[6] S. cuvieri[6] Oxfordshire[6] "Vertebrae [and] limb elements."[9] Actually indeterminate theropod remains.[6]
Troodontidae[7] Indeterminate[7] Oxfordshire[7] Hornsleasow Quarry[7] "Tooth"[7] Specimen GCLRM G8-23.[7]
Therizinosauroidea[7] Indeterminate[7] Oxfordshire[7] Hornsleasow Quarry[7] "Tooth"[7] Specimen GCLRM G167-32. First record of Therizinosauroidea in Europe.[7]


See also

  • List of dinosaur-bearing rock formations
  • List of fossiliferous stratigraphic units in England

References

  1. 1.0 1.1 Weishampel, David B; et al. (2004). "Dinosaur distribution (Middle Jurassic, Europe)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 538–541. ISBN:0-520-24209-2.
  2. British Geological Survey. "Chipping Norton Limestone Formation". https://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=CNL. 
  3. 3.0 3.1 Listed as "cf. Alocodon sp." in "10.3 Gloucestershire, England; 2. Chipping Norton Formation," in Weishampel, et al. (2004). Page 538.
  4. 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 "10.3 Gloucestershire, England; 2. Chipping Norton Formation," in Weishampel, et al. (2004). Page 538.
  5. 5.0 5.1 5.2 5.3 "10.3 Gloucestershire, England; 2. Chipping Norton Formation" and "10.11 Oxfordshire, England; 2. Chipping Norton Formation," in Weishampel, et al. (2004). Pages 538,540.
  6. 6.00 6.01 6.02 6.03 6.04 6.05 6.06 6.07 6.08 6.09 6.10 6.11 6.12 6.13 6.14 "10.11 Oxfordshire, England; 2. Chipping Norton Formation," in Weishampel, et al. (2004). Page 540.
  7. 7.00 7.01 7.02 7.03 7.04 7.05 7.06 7.07 7.08 7.09 7.10 7.11 7.12 7.13 7.14 7.15 7.16 7.17 Wills, S.; Underwood, C. J.; Barrett, P. M. (2023). "Machine learning confirms new records of maniraptoran theropods in Middle Jurassic UK microvertebrate faunas". Papers in Palaeontology 9 (2): e1487. doi:10.1002/spp2.1487. 
  8. 8.0 8.1 Listed as "cf. Phyllodon sp." in "10.3 Gloucestershire, England; 2. Chipping Norton Formation," in Weishampel, et al. (2004). Page 538.
  9. "Table 4.1," in Weishampel, et al. (2004). Page 78.

Bibliography

  • Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN:0-520-24209-2.