| Lastres Formation | |
|---|---|
| Stratigraphic range: Kimmeridgian-Tithonian | |
| Type | Geologic group |
| Overlies | Tereñes Formation |
| Thickness | 400 meters[1] |
| Lithology | |
| Primary | Sandstone, conglomerate[1] |
| Other | Mudstone[1] |
| Location | |
| Coordinates | 43°30′N 5°30′W / 43.5°N 5.5°W / 43.5; -5.5 |
| Approximate paleocoordinates | 35°48′N 6°48′E / 35.8°N 6.8°E / 35.8; 6.8 |
| Region | Asturias |
| Country |  Spain |
  Lastres Formation (Spain)  Lastres Formation (Asturias) Show map of Asturias | |
The Lastres Formation is a geological formation located in Asturias province, northwestern Spain. It is believed to have been deposited in a fluvial-dominated deltaic system.[1]
Fossil tracks have been reported from the formation, including those of dinosaurs, pterosaurs, crocodiles, turtles, and lizards.[2]
Color key
|
Notes Uncertain or tentative taxa are in small text; |
| Pterosaurs | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Notes | Images | |
| Pteraichnus[3] | * Present at the Quintueles, Oles, Tazones, and Luces sites; all in Asturias, Spain.[3] | * Quintueles, Oles, and Tazones specimens housed at the Jurassic Museum of Asturias, Spain. Luces specimens remain in the field.[3] | |||
| Plants | |||||
|---|---|---|---|---|---|
| Genus | Species | Presence | Material | Notes | Images |
| Ricciopsis | R. asturicus | [4] | Aliverwort. | ||
