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Potrerillos Formation, Mexico

Coordinates: 26°00′N 100°48′W / 26.0°N 100.8°W / 26.0; -100.8
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Potrerillos Formation
Stratigraphic range: Maastrichtian-Early Paleocene
~70–62 Ma
TypeFormation
Unit ofDifunta Group
Sub-unitsUpper Mudstone member
Lithology
PrimaryMudstone
OtherGrainstone
Location
Coordinates26°00′N 100°48′W / 26.0°N 100.8°W / 26.0; -100.8
Approximate paleocoordinates31°42′N 82°42′W / 31.7°N 82.7°W / 31.7; -82.7
RegionCoahuila
Country Mexico
Potrerillos Formation, Mexico is located in Mexico
Potrerillos Formation, 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

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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

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The following fossils have been reported from the formation:[1]

See also

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References

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  1. ^ a b c Potrerillos Formation at Fossilworks.org
  2. ^ a b c d Vega & Perrilliat, 1995

Bibliography

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  • Vega, F.J.; Perrilliat, M.D.C. (1995), "On some Paleocene invertebrates from the Potrerillos Formation (Difunta Group), northeastern Mexico", Journal of Paleontology, 69 (5): 863–869, Bibcode:1995JPal...69..862V, doi:10.1017/S0022336000035538