White Limestone Formation

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White Limestone Formation
Stratigraphic range: Bathonian
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Lower face at Kirtlington Quarry (geograph 4225329).jpg
White Limestone Formation exposed at Kirtlington Quarry
Type Geological formation
Unit of Great Oolite Group
Sub-unitsShipton Member, Ardley Member, Bladon Member
Underlies Forest Marble Formation
Overlies Hampen Formation, Rutland Formation
ThicknessUp to 30 m
Lithology
Primary Limestone
Other Mudstone Clay Marl
Location
Region England
Country United Kingdom
Extent Gloucestershire
Type section
LocationShipton-on-Cherwell Quarry
Thickness at type sectionApproximately 20 m

The White Limestone Formation is a Bathonian geologic formation in the United Kingdom, dating to the Middle Jurassic, 168.3 to 166.1 million years ago. [1] Fossil sauropod tracks have been reported from the formation. [2] It is the lateral equivalent of the Blisworth Limestone. It predominantly consists of grey-yellow limestone, typically wackestone and packstone with subordinate ooidal grainstone. The Woodeaton Quarry locality has yielded microvertebrates. [3]

Contents

Paleobiota

For the diverse terrestrial biota of the Kirtlington Mammal Bed, which is on the boundary between the White Limestone and the Forest Marble Formation, see Forest Marble Formation#Paleobiota

Dinosaurs

Dinosaurs reported from the White Limestone Formation
GenusSpeciesLocationStratigraphic positionMaterialNotesImages
Proceratosaurus P. bradleyi Minchinhampton Partial skull and lower jawsA proceratosaurid theropod, other authors have attributed the strata the specimen was found in to the Forest Marble Formation. [4]
Proceratosaurus holotype skull.jpg
Dromaeosauridae Indeterminate Woodeaton Quarry Bed 26, Bladon MemberTeeth
Thyreophora
cf. Paronychodon

Mammaliamorphs

Mammaliamorphs reported from the White Limestone Formation
GenusSpeciesLocationStratigraphic positionMaterialNotesImages
Amphitheriidae Indeterminate Woodeaton Quarry Bed 26, Bladon MemberTooth
Phascolotherium P. bucklandi Eutriconodont
Hahnotherium H. antiquum Multituberculata
Simpsonodon S. oxfordensis Docodont
Woodeatonia [5] W. parva Allotherian
Butlerodon [5] B. quadratus Allotherian
Kermackodon [5] K. oxfordensis Allotherian, formerly placed in Eleutherodon [5]
Stereognathus Indeterminate Tritylodontid

See also

Footnotes

  1. ↑ "The BGS Lexicon of Named Rock Units — Result Details White Limestone Formation". British Geological Survey. Retrieved 17 April 2017.
  2. ↑ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  3. ↑ Wills, Simon; Bernard, Emma Louise; Brewer, Philippa; Underwood, Charlie J.; Ward, David J. (1 April 2019). "Palaeontology, stratigraphy and sedimentology of Woodeaton Quarry (Oxfordshire) and a new microvertebrate site from the White Limestone Formation (Bathonian, Jurassic)" . Proceedings of the Geologists' Association. 130 (2): 170–186. doi:10.1016/j.pgeola.2019.02.003. ISSN   0016-7878. S2CID   135409990.
  4. ↑ "10.3 Gloucestershire, England; 4. Forest Marble Formation," in Weishampel, et al. (2004). Page 538.
  5. 1 2 3 4 Mao, Fangyuan; Brewer, Philippa; Hooker, Jerry J.; Meng, Jin (31 December 2022). "New allotherian specimens from the Middle Jurassic Woodeaton Quarry (Oxfordshire) and implications for haramiyidan diversity and phylogeny" . Journal of Systematic Palaeontology. 20 (1): 1–37. doi:10.1080/14772019.2022.2097021. ISSN   1477-2019. S2CID   251708147.

References


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