| Westbury Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Geological formation |
| Unit of | Penarth Group |
| Underlies | Lilstock Formation |
| Overlies | Blue Anchor Formation |
| Thickness | 5-10 m |
| Lithology | |
| Primary | Mudstone, Shale |
| Other | Limestone, Sandstone |
| Location | |
| Region | Europe |
| Country |  UK |
| Type section | |
| Named for | Westbury-on-Severn |
The Westbury Formation is a geological formation in England, one of the Penarth Group. It dates back to the Rhaetian.[1] The formation is named after the village of Westbury-on-Severn in Gloucestershire.[2] The remains of giant shastasaurids are known from the formation.[3]
Vertebrate fauna
| Vertebrates reported from the Westbury Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Avalonianus[4] | A. sanfordi[4] | Wedmore Hill[4] | "Several now lost teeth."[4] | |||
|
C. borealis[1] |
Westbury-on-Severn[5] |
"Vertebrae, pubis, ischium, femur, tibia, phalanges, adult."[6] |
| |||
| Picrodon[4] | P. herveyi[4] | Wedmore Hill[4] | "Tooth."[4] | |||
| Shastasauridae[3] | Indeterminate[3] | Aust, Lilstock and Penarth[3] | "Three partial specimens."[3] | |||
See also
References
- 1 2 3 Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Triassic, Europe)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 521–525. ISBN 0-520-24209-2.
- ↑ The BGS Lexicon of Named Rock Units — Result Details: Westbury Formation
- 1 2 3 4 5 Lomax, Dean R.; De la Salle, Paul; Massare, Judy A.; Gallois, Ramues (2018-04-09). Wong, William Oki (ed.). "A giant Late Triassic ichthyosaur from the UK and a reinterpretation of the Aust Cliff 'dinosaurian' bones". PLOS ONE. 13 (4): e0194742. Bibcode:2018PLoSO..1394742L. doi:10.1371/journal.pone.0194742. ISSN 1932-6203. PMC 5890986. PMID 29630618.
- 1 2 3 4 5 6 7 8 H. G. Seeley. (1898). On large terrestrial saurians from the Rhaetic Beds of Wedmore Hill, described as Avalonia sanfordi and Picrodon herveyi. Geological Magazine, decade 4 5:1-6
- ↑ Galton, P. M. (1985). Notes on the Melanorosauridae, a family of large prosauropod dinosaurs (Saurischia: Sauropodomorpha). Geobios, 18(5), 671-676.
- ↑ "Table 12.1," in Weishampel, et al. (2004). Page 234.
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