Lealt Shale
Geologic formation in Skye, Scotland
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The Lealt Shale Formation is a Middle Jurassic geologic formation in Scotland. Fossil ornithopod, theropod and stegosaur tracks, a theropod dinosaur tooth and the pterosaur Dearc have been reported from the formation.[1][2][3] The lithology consists of silty fissile mudstones with subordinate thin limestones.[4]
Unit ofGreat Estuarine Group
Sub-unitsKildonnan Member, Lonfearn Member
UnderliesValtos Sandstone Formation
| Lealt Shale Formation | |
|---|---|
| Stratigraphic range: | |
Thinly bedded limestones of the Lealt Shale formation overlain by Paleogene lava | |
| Type | Geological formation |
| Unit of | Great Estuarine Group |
| Sub-units | Kildonnan Member, Lonfearn Member |
| Underlies | Valtos Sandstone Formation |
| Overlies | Elgol Sandstone Formation |
| Thickness | Between 45 and 50 m |
| Lithology | |
| Primary | Mudstone |
| Other | Limestone |
| Location | |
| Region | Europe |
| Country |  Scotland |
| Extent | Inner Hebrides |
| Type section | |
| Named for | Lealt, Skye |
| Named by | Harris and Hudson |
| Location | Cliffs east of Lonfearn (partial), Coastal exposure 2.5 km north of Kildonnan, Eigg (partial) |
| Year defined | 1980 |
| Thickness at type section | Lonfearn: 26 to 30 m (partial) Kildonnan: 23 m (partial) |
Fossil content
Color key
|
Notes Uncertain or tentative taxa are in small text; |
Dinosaurs
Theropoda
Pterosaurs
| Pterosaurs of the Lealt Shale Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Dearc[5] | D. sgiathanach | A angustinaripterin rhamphorhynchid |  | |||
Fish
| Fishes of the Lealt Shale Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Archaeotolithus[6] | A. eiggensis | A ray-finned fish | ||||
| A. invernizziae | ||||||
| Leptolepis[6] | L. flexuosus | a leptolepid fish | ||||
| L. skyensis | ||||||
