Earth:Cuchara Formation

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Short description: Geologic formation in Colorado, US
Cuchara Formation
Stratigraphic range: Wasatchian
~55.8–50 Ma
Cuchara Formation.JPG
Along Highway 12 just north of La Veta
TypeFormation
Location
Coordinates [ ⚑ ] : 37°48′N 105°06′W / 37.8°N 105.1°W / 37.8; -105.1
Paleocoordinates [ ⚑ ] 42°12′N 89°24′W / 42.2°N 89.4°W / 42.2; -89.4
RegionColorado
Country United States
ExtentRaton Basin
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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

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

Mammals

Ferae
Perissodactyla
  • Hyracotherium sp.[2]
Placentalia

Wasatchian correlations

Wasatchian correlations in North America
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
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Cuchara Formation (North America)
Country  United States  Canada  United States  Mexico  United States
Copelemur 14px 14px 14px 14px
Coryphodon 14px 14px 14px 14px 14px 14px 14px 14px 14px 14px
Diacodexis 14px 14px 14px 14px 14px 14px 14px
Homogalax 14px 14px 14px 14px 14px 14px 14px
Oxyaena 14px 14px 14px 14px 14px
Paramys 14px 14px 14px 14px 14px 14px 14px 14px 14px
Primates 10px 10px 10px 10px 10px 10px 10px
Birds 10px 10px 10px 10px 10px
Reptiles 10px 10px 10px 10px 10px 10px 10px
Fish 10px 10px 10px 10px 10px 10px 10px
Insects 10px 10px 10px 10px 10px 10px
Flora 10px 10px 10px 10px 10px 10px 10px 10px 10px
Environments Alluvial-fluvio-lacustrine Fluvial Fluvial Fluvio-lacustrine Fluvial Lacustrine Fluvio-lacustrine Deltaic-paludal Shallow marine Fluvial Shallow marine Fluvial Fluvial
Pink ff0080 pog.svg Wasatchian volcanoclastics

8px Wasatchian fauna

Dark Green 004040 pog.svg Wasatchian flora
Volcanic Yes No Yes No Yes No Yes No Yes No

See also

  • List of fossiliferous stratigraphic units in Colorado
  • Paleontology in Colorado

References

  1. 1.0 1.1 Cuchara Formation at Fossilworks.org
  2. 2.0 2.1 2.2 Robinson, 1963

Bibliography

  • Robinson, P. 1963. University of Colorado Studies, .. 1;