Valtos Sandstone Formation
Sandstone formation in Scotland
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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 |
