Valtos Sandstone Formation
Appearance
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 |
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 | |||
Theropoda | Indeterminate | Teeth and caudal vertebra | Vertebra likely to belongs to a coelurosaur |
See also
Footnotes
- ^ British Geological Survey. "Valtos Sandstone Formation". BGS Lexicon of Named Rock Units. Retrieved 2018-03-08.
- ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- ^ Clark, Neil D. L. (2018-02-05). "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.
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". Archived from the original on 31 July 2014. Retrieved 8 July 2014.
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