Coordinates: 28°42′N 114°06′W / 28.7°N 114.1°W / 28.7; -114.1

Las Tetas de Cabra Formation

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Las Tetas de Cabra Formation
Stratigraphic range: Wasatchian
~55.8–50 Ma
TypeFormation
Lithology
PrimarySandstone
OtherSiltstone
Location
Coordinates28°42′N 114°06′W / 28.7°N 114.1°W / 28.7; -114.1
Approximate paleocoordinates31°06′N 97°00′W / 31.1°N 97.0°W / 31.1; -97.0
RegionBaja California
CountryFile:Flag of Mexico.svg Mexico
Type section
Named forLoma las Tetas de Cabra

The Las Tetas de Cabra Formation is a geologic formation in Mexico. It preserves fossils dating back to the Wasatchian of the Early Eocene period.[1]

Fossil content

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

Mammals

Acreodi
Artiodactyls
Cimolesta
Didelphimorphia
Ferae
Glires
Hyaenodonta
Pantodonta
Perissodactyls
Placentalia
Theriiformes

Reptiles

Amphibians

Fish

Invertebrates

Gastropods

Flora

Wasatchian correlations

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
Country File:Flag of the United States (23px).png United States File:Flag of Canada (Pantone).svg Canada File:Flag of the United States (23px).png United States File:Flag of Mexico.svg Mexico File:Flag of the United States (23px).png United States
Copelemur File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg
Coryphodon File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg
Diacodexis File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg
Homogalax File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg
Oxyaena File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg
Paramys File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg File:Orange pog.svg
Primates File:Brown pog.svg File:Brown pog.svg File:Brown pog.svg File:Brown pog.svg File:Brown pog.svg File:Brown pog.svg File:Brown pog.svg
Birds File:White pog.svg File:White pog.svg File:White pog.svg File:White pog.svg File:White pog.svg
Reptiles File:SpringGreen pog.svg File:SpringGreen pog.svg File:SpringGreen pog.svg File:SpringGreen pog.svg File:SpringGreen pog.svg File:SpringGreen pog.svg File:SpringGreen pog.svg
Fish File:Blue pog.svg File:Blue pog.svg File:Blue pog.svg File:Blue pog.svg File:Blue pog.svg File:Blue pog.svg File:Blue pog.svg
Insects File:Steel pog.svg File:Steel pog.svg File:Steel pog.svg File:Steel pog.svg File:Steel pog.svg File:Steel pog.svg
Flora File:Green pog.svg File:Green pog.svg File:Green pog.svg File:Green pog.svg File:Green pog.svg File:Green pog.svg File:Green pog.svg File:Green pog.svg File:Green pog.svg
Environments Alluvial-fluvio-lacustrine Fluvial Fluvial Fluvio-lacustrine Fluvial Lacustrine Fluvio-lacustrine Deltaic-paludal Shallow marine Fluvial Shallow marine Fluvial Fluvial
File:Pink ff0080 pog.svg Wasatchian volcanoclastics

File:Orange pog.svg Wasatchian fauna

Volcanic Yes No Yes No Yes No Yes No Yes No

See also

References

  1. ↑ 1.0 1.1 Las Tetas de Cabra Formation at Fossilworks.org
  2. ↑ Alroy, 2002
  3. ↑ 3.0 3.1 3.2 3.3 3.4 Novacek et al. 1991
  4. ↑ 4.0 4.1 Morris, 1966
  5. ↑ 5.00 5.01 5.02 5.03 5.04 5.05 5.06 5.07 5.08 5.09 5.10 5.11 5.12 5.13 5.14 Novacek et al., 1987
  6. ↑ 6.0 6.1 Lucas, 1998

Bibliography

  • Alroy, J (2002), Synonymies and reidentifications of North American fossil mammals
  • Froehlich, D. J (2002), "Quo vadis Eohippus? The systematics and taxonomy of the early Eocene equids (Perissodactyla)", Zoological Journal of the Linnean Society, 134 (2): 141–256, doi:10.1046/j.1096-3642.2002.00005.x
  • Lucas, S. G (1998), Fossil mammals and the Paleocene/Eocene series boundary in Europe, North America, and Asia, M.-P. Aubry, S. G. Lucas and W. A. Berggren (eds.), Late Paleocene–Early Eocene Biotic and Climatic Events in the Marine and Terrestrial Records, pp. 451–500
  • Novacek, M. J.; Ferrusquía Villafranca, I.; Flynn, J. J.; Wyss, A. R.; Norell, M. A. (1991), "Wasatchian (early Eocene) mammals and other vertebrates from Baja California, Mexico : the Lomas Las Tetas de Cabra fauna", Bulletin of the American Museum of Natural History, 208: 1–88
  • Novacek, M. J.; Flynn, J. J.; Ferrusquia Villafranca, I.; Cipolletti, R. M. (1987), "An early Eocene (Wasatchian) mammal fauna from Baja California", National Geographic Research, 3: 376–388
  • Morris, W. J (1966), "Fossil mammals from Baja California: new evidence on early Tertiary migrations", Science, 153 (3742): 1376–1378, Bibcode:1966Sci...153.1376M, doi:10.1126/science.153.3742.1376, PMID 17814386
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