Potrerillos Formation, Mexico
Potrerillos Formation Stratigraphic range: Maastrichtian-Early Paleocene ~ | |
---|---|
Type | Formation |
Unit of | Difunta Group |
Sub-units | Upper Mudstone member |
Lithology | |
Primary | Mudstone |
Other | Grainstone |
Location | |
Coordinates | 26°00′N 100°48′W / 26.0°N 100.8°WCoordinates: 26°00′N 100°48′W / 26.0°N 100.8°W |
Approximate paleocoordinates | 31°42′N 82°42′W / 31.7°N 82.7°W |
Region | Coahuila |
Country | Mexico |
Potrerillos Formation, Mexico (Mexico) |
The Potrerillos Formation is a geologic formation in Mexico. It preserves fossils dating back to the Early Paleocene period.[1]
Description[]
The Potrerillos Formation was subdivided into five members by McBride (1974), with the second highest, the Upper Mudstone Member. Foraminifera in the lower members indicate a Maastrichtian age, while fossils in the upper members indicate a Paleocene age. Fossil remains are abundant and include transported remains of corals, gastropods, bivalves, shark teeth, and bone fragments.[1]
Fossil content[]
The following fossils have been reported from the formation:[1]
- Bivalves
- Cephalopods
See also[]
References[]
- ^ a b c Potrerillos Formation at Fossilworks.org
- ^ a b c d Vega & Perrilliat, 1995
Bibliography[]
- Journal of Paleontology 69. 863��869. , and . 1995. On some Paleocene invertebrates from the Potrerillos Formation (Difunta Group), northeastern Mexico.
Categories:
- Geologic formations of Mexico
- Maastrichtian Stage of North America
- Paleocene Series of North America
- Cretaceous Mexico
- Paleogene Mexico
- Cretaceous–Paleogene boundary
- Mudstone formations
- Shallow marine deposits
- Tidal deposits
- Paleontology in Mexico
- Geography of Coahuila