Paso del Sapo Formation
| Paso del Sapo Formation | |
|---|---|
| Stratigraphic range: Maastrichtian ~ | |
| Type | Geological formation |
| Underlies | La Colonia & Lefipán Formations |
| Overlies | Cerro Barcino Formation |
| Lithology | |
| Primary | Siltstone |
| Location | |
| Coordinates | 42°42′S 70°00′W / 42.7°S 70.0°W |
| Approximate paleocoordinates | 44°54′S 58°30′W / 44.9°S 58.5°W |
| Region | Chubut Province |
| Country | Argentina |
| Extent | Cañadón Asfalto Basin |
| Type section | |
| Named for | Paso del Sapo |
  Paso del Sapo Formation (Argentina) | |
The Paso del Sapo Formation is a Maastrichtian geologic formation of the Cañadón Asfalto Basin in Argentina. The siltstones of the formation were deposited in a lacustrine environment. Plesiosaur remains are among the fossils that have been recovered from its strata.
Fossil content
Color key
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Notes Uncertain or tentative taxa are in small text; |
Plesiosaurs
| Plesiosaurs of the Paso del Sapo Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Aristonectes | A. parvidens | A aristonectine elasmosaurid | ||||
Fish
| Fishes of the Paso del Sapo Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Ptychoceratodus | P. sp. | A ptychoceratodontid lungfish | ||||