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Cuchara Formation

Coordinates: 37°48′N 105°06′W / 37.8°N 105.1°W / 37.8; -105.1
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Cuchara Formation
Stratigraphic range: Wasatchian
~55.8–50 Ma
Along Highway 12 just north of La Veta
TypeFormation
Location
Coordinates37°48′N 105°06′W / 37.8°N 105.1°W / 37.8; -105.1
Approximate paleocoordinates42°12′N 89°24′W / 42.2°N 89.4°W / 42.2; -89.4
RegionColorado
Country United States
ExtentRaton Basin
Cuchara Formation is located in the United States
Cuchara Formation
Cuchara Formation (the United States)
Cuchara Formation is located in Colorado
Cuchara Formation
Cuchara Formation (Colorado)

The Cuchara Formation is a geologic formation in Colorado. It preserves fossils dating back to the Ypresian stage of the Eocene period, or Wasatchian in the NALMA classification.[1]

Fossil content

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

Mammals

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Ferae
Perissodactyla
Placentalia

Wasatchian correlations

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Wasatchian correlations in North America
Formation Wasatch DeBeque Claron Indian Meadows Pass Peak Tatman Willwood Golden Valley Coldwater Allenby Kamloops Ootsa Lake Margaret Nanjemoy Hatchetigbee Tetas de Cabra Hannold Hill Coalmont Cuchara Galisteo San Jose Ypresian (IUCS) • Itaboraian (SALMA)
Bumbanian (ALMA) • Mangaorapan (NZ)
Basin Powder River
Uinta
Piceance
Colorado Plateau
Wind River
Green River
Bighorn
Piceance




Colorado Plateau





Wind River





Green River






Bighorn
Williston Okanagan Princeton Buck Creek Nechako Sverdrup Potomac GoM Laguna Salada Rio Grande North Park Raton Galisteo San Juan
Cuchara Formation is located in North America
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation
Cuchara Formation (North America)
Country  United States  Canada  United States  Mexico  United States
Copelemur
Coryphodon
Diacodexis
Homogalax
Oxyaena
Paramys
Primates
Birds
Reptiles
Fish
Insects
Flora
Environments Alluvial-fluvio-lacustrine Fluvial Fluvial Fluvio-lacustrine Fluvial Lacustrine Fluvio-lacustrine Deltaic-paludal Shallow marine Fluvial Shallow marine Fluvial Fluvial
Wasatchian volcanoclastics

Wasatchian fauna

Wasatchian flora
Volcanic Yes No Yes No Yes No Yes No Yes No

See also

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References

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  1. ^ a b Cuchara Formation at Fossilworks.org
  2. ^ a b c Robinson, 1963

Bibliography

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  • Robinson, P (1963), University of Colorado Studies, vol. 1