Valtos Sandstone Formation
Stratigraphic range: Middle Jurassic Bathonian

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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

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 |

## See also

* List of dinosaur-bearing rock formations
* List of stratigraphic units with indeterminate dinosaur fossils
* List of fossiliferous stratigraphic units in Scotland

## Footnotes

1. ↑ British Geological Survey. "Valtos Sandstone Formation". http://www.bgs.ac.uk/lexicon/lexicon.cfm?pub=VTS.
2. ↑ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
3. ↑ Clark, Neil D. L. (2018-02-05). "Review of the Dinosaur Remains from the Middle Jurassic of Scotland, UK" (in en). Geosciences 8 (2): 53. doi:10.3390/geosciences8020053. Bibcode: 2018Geosc...8...53C.
4. ↑ 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" (in en). Zoological Journal of the Linnean Society 176 (2): 443–462. doi:10.1111/zoj.12315. PMID 27594716.
5. ↑ PANCIROLI, Elsa; FUNSTON, Gregory F.; HOLWERDA, Femke; MAIDMENT, Susannah C. R.; FOFFA, Davide; LARKIN, Nigel; CHALLANDS, Tom; DEPOLO, Paige E. et al. (2020-08-27). "First dinosaur from the Isle of Eigg (Valtos Sandstone Formation, Middle Jurassic), Scotland". Earth and Environmental Science Transactions of the Royal Society of Edinburgh 111 (3): 157–172. doi:10.1017/s1755691020000080. ISSN 1755-6910. Bibcode: 2020EESTR.111..157P.

## 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". https://www.fossilworks.org/.

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