| Xert Formation | |
|---|---|
| Stratigraphic range: Late Barremian ~122–120 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓ | |
| Type | Geological formation |
| Underlies | Forcall Formation |
| Overlies | Artoles Formation, Arcillas de Morella Formation |
| Lithology | |
| Primary | Limestone, marl |
| Other | Claystone, chert |
| Location | |
| Coordinates | 40°42′N 0°06′E / 40.7°N 0.1°E / 40.7; 0.1 |
| Approximate paleocoordinates | 30°06′N 10°12′E / 30.1°N 10.2°E / 30.1; 10.2 |
| Region | Aragón |
| Country |  Spain |
| Extent | Maestrazgo Basin Galve Basin |
| Type section | |
| Named for | Chert |
  Xert Formation (Spain)Show map of Spain Xert Formation (Aragon)Show map of Aragon | |
The Calizas y margas de Xert Formation or Xert Formation is an Early Cretaceous (late Barremian) geologic formation of the Maestrazgo and Galve Basins in central-eastern Spain. The formation is described as a coastal claystone, with indications of a transgressive episode, marked by the transition from marsh facies, with little marine influence, to marine platform facies evidenced by abundant marine invertebrates.
Fossil content
- Dinosaurs
- Invertebrates
- Flora
Correlation
See also
References
- ^ Xert Formation at Fossilworks.org
- Weishampel et al., 2004, pp. 517-607
Bibliography
- Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21
Further reading
- G. Cuenca Bescós, O. Amo, J. L. Barco, J. I. Canudo, R. Royo Torres and J. I. Ruiz Omeñaca. 1999. Dinosaurios de Aragón . Zubía 17:235-257