Valtos Sandstone Formation | |
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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] | ||||||
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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 |