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Taynton Limestone Formation

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The Taynton Limestone[1] is a geological formation in Oxfordshire in the United Kingdom. It dates to the Middle Jurassic, mid-Bathonian stage.[2] It predominanty consists of ooidal grainstone.[3] The term "Stonesfield Slate" refers to slaty limestone horizons within the formation, that historically were extensively quarried for use in roof tiling. Previously these were thought to belong to the Sharp's Hill Formation, but boreholes and shaft sections suggest that at least three horizons within the Taynton Limestone were quarried for the slate.[4] These horizons are well known for producing a diverse set of fossils including those of plants, insects as well as vertebrates, including some of the earliest known mammals, pterosaurs as well as those of first dinosaur ever described, Megalosaurus.

Taynton Limestone
Stratigraphic range: Bathonian
↓
TypeGeological formation
Unit ofGreat Oolite Group
UnderliesHampen Formation, Rutland Formation
OverliesFuller's Earth Formation, Sharp's Hill Formation, Horsehay Sand Formation
Thickness0-11 m
Lithology
PrimaryLimestone
OtherMarl, Sandstone
Location
RegionOxfordshire
Country England
Type section
Named forTaynton, Oxfordshire
LocationLee's Quarry, Taynton Down, Oxfordshire

Vertebrate fauna

Dinosaurs

Dinosaurs of the Stonesfield Slate
Taxa Presence Description Images
  1. Possible dinosaur eggs.[1]
  1. Geographically present in Oxfordshire, England.[1]
 
Megalosaurus
  1. I. incognitus[1]
  1. Geographically present in Oxfordshire, England.[1]

Two ilia.[5]

  1. M. bucklandii[1]
  1. Geographically present in Oxfordshire, England.[1]
  1. .C. oxoniensis[1]
  1. Geographically present in Oxfordshire, England.[1]

Pterosaurs

Pterosaurs of the Stonesfield Slate
Taxa Presence Notes Images
  • "Pterodactylus" bucklandi[6]
  • "Rhamphorhynchus" depressirostris[6]

Mammaliamorphs

Mammaliamorphs of the Stonesfield Slate[8]
Taxa Species Material Location Notes Images
Amphilestes A. broderipii Left Mandible and teeth Stonesfield Slate quarries Amphilestid
Amphitherium A. prevostii Partial left mandible and a right mandible Amphitheriidae
A. rixoni Right dentary
Stereognathus S. ooliticus Teeth Tritylodontid
Phascolotherium P. bucklandii Dentary Amphilestid

Invertebrate fauna

Invertebrates of the Stonesfield Slate
Taxa Presence Notes Images

Genus:

  1. Geographically present at Stonesfield.[9]

See also

References

  1. ^ a b c d e f g h i j k l m 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. ^ Benson, R.B.J. (2009). "An assessment of variability in theropod dinosaur remains from the Bathonian (Middle Jurassic) of Stonesfield and New Park Quarry, UK and taxonomic implications for Megalosaurus bucklandii and Iliosuchus incognitus." Palaeontology, doi:10.1111/j.1475-4983.2009.00884.x
  3. ^ "Taynton Limestone Formation". BGS Lexicon of Named Rock Units. Retrieved 2019-09-21.{{cite web}}: CS1 maint: url-status (link)
  4. ^ Boneham, B.F.W.; Wyatt, R.J. (1993-1). "The stratigraphical position of the Middle Jurassic (Bathonian) Stonesfield Slate of Stonesfield, Oxfordshire, UK". Proceedings of the Geologists' Association. 104 (2): 123–136. doi:10.1016/S0016-7878(08)80014-4. {{cite journal}}: Check date values in: |date= (help)
  5. ^ "Table 4.1," in Weishampel, et al. (2004). Page 73.
  6. ^ a b c d Wellnhofer, Peter (1991). "Summary of Middle Jurassic Pterosaurs." The Illustrated Encyclopedia of Pterosaurs. London, UK: Salamander Books Limited. p. 81. ISBN 0-86101-566-5.
  7. ^ a b Michael O’Sullivan; David M. Martill (2018). "Pterosauria of the Great Oolite Group (Bathonian, Middle Jurassic) of Oxfordshire and Gloucestershire, England". Acta Palaeontologica Polonica. Online edition. doi:10.4202/app.00490.2018.
  8. ^ "Stonesfield Slate quarries". paleobiodb.org. Retrieved 2019-10-05.{{cite web}}: CS1 maint: url-status (link)
  9. ^ United States Congressional Serial Set. U.S. Government Printing Office. 1892-01-01.
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