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′N5°30′W / 43.5°N 5.5°W |
Approximate paleocoordinates | 35°48′N6°48′E / 35.8°N 6.8°E |
Region | Asturias |
Country | Spain |
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] | A liverwort. | ||