Valtos Sandstone Formation
The Valtos Sandstone Formation is a Middle Jurassic (Bathonian) formation found in the Inner Hebrides of Scotland. It is the thickest member of the Great Estuarine Group. The lithology consists of sets of approximately 6 metre thick cross bedded sandstone, capped by thin shelly limestones containing bivalves of the genus Neomiodon [1] Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[2]
| Archosaurs of the Valtos Formation[3] | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Abundance | Notes | Images |
| Theriosuchus | Indeterminate | Dentary fragment[4] | ||||
| Sauropoda | Indeterminate | Near Valtos | Limb bone, rib, caudal vertebra, Tooth | |||
| Stegosauria | Indeterminate | Isle of Eigg | Fibula[5] | |||
| Theropoda | Indeterminate | Teeth and caudal vertebra | Vertebra likely to belongs to a coelurosaur | |||
| Valtos Sandstone Formation | |
|---|---|
| Stratigraphic range: Middle Jurassic | |
 Sandstones of the Valtos Sandstone Formation outcropping between two dolerite sills, the Kilt Rock, Trotternish, Skye | |
| Type | Formation |
| Unit of | Great Estuarine Group |
| Underlies | Duntulm Formation |
| Overlies | Lealt Shale Formation |
| Thickness | up to 120 m |
| Lithology | |
| Primary | sandstone |
| Other | limestone, mudstone |
| Location | |
| Region | Scotland |
| Country | United Kingdom |
| Extent | Inner Hebrides |
| Type section | |
| Named for | Valtos, Skye |
| Named by | Harris and Hudson |
| Location | Cliffs between Valtos and Mealt Falls |
| Year defined | 1980 |
| Thickness at type section | 95 m |
See also
Footnotes
- British Geological Survey. "Valtos Sandstone Formation". BGS Lexicon of Named Rock Units. Retrieved 8 March 2018.
- Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- Clark, Neil D. L. (5 February 2018). "Review of the Dinosaur Remains from the Middle Jurassic of Scotland, UK". Geosciences. 8 (2): 53. Bibcode:2018Geosc...8...53C. doi:10.3390/geosciences8020053.
- Young, Mark T.; Tennant, Jonathan P.; Brusatte, Stephen L.; Challands, Thomas J.; Fraser, Nicholas C.; Clark, Neil D. L.; Ross, Dugald A. (February 2016). "The first definitive Middle Jurassic atoposaurid (Crocodylomorpha, Neosuchia), and a discussion on the genus T heriosuchus: Middle Jurassic T heriosuchus From Skye". Zoological Journal of the Linnean Society. 176 (2): 443–462. doi:10.1111/zoj.12315. PMC 4989461. PMID 27594716.
- PANCIROLI, Elsa; FUNSTON, Gregory F.; HOLWERDA, Femke; MAIDMENT, Susannah C. R.; FOFFA, Davide; LARKIN, Nigel; CHALLANDS, Tom; DEPOLO, Paige E.; GOLDBERG, Daniel; HUMPAGE, Matthew; ROSS, Dugald (27 August 2020). "First dinosaur from the Isle of Eigg (Valtos Sandstone Formation, Middle Jurassic), Scotland". Earth and Environmental Science Transactions of the Royal Society of Edinburgh: 1–16. doi:10.1017/s1755691020000080. ISSN 1755-6910.
References
- Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
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