| Tacubaya Formation | |
|---|---|
| Stratigraphic range: Pleistocene | |
| Type | Formation |
| Location | |
| Region | Aguascalientes |
| Country | Mexico |
The Tacubaya Formation is a geologic formation in Aguascalientes, Mexico. It preserves fossils dating to the Pleistocene epoch. [1]
Platygonus is an extinct genus of herbivorous peccaries of the family Tayassuidae, endemic to North and South America from the Miocene through Pleistocene epochs, existing for about 10.289 million years. P. compressus stood 2.5 feet tall.
Scapanus is a genus of moles in the family Talpidae. They live in North America from west of the Rockies south to Baja California del Norte, and north to British Columbia, wherever conditions permit a mole population; that is to say, apart from the most sandy, rocky, or developed places. As they are one genus, they are very closely related, but as species, they rarely if ever interbreed successfully.
Hemiauchenia is a genus of laminoid camelids that evolved in North America in the Miocene period about 10 million years ago. This genus diversified and expanded into to South America in the Late Pliocene approximately 3 to 2 million years ago, as part of the Great American Biotic Interchange. The genus became extinct at the end of the Pleistocene. The monophyly of the genus has been considered questionable, with phylogenetic analyses finding the genus to paraphyletic or polyphyletic, with some species suggested to be more closely related to living lamines than to other Hemiaucenia species.
Pachyarmatherium is a genus of extinct large armadillo-like cingulates found in North and South America from the Pliocene and Pleistocene epochs, related to the extant armadillos and the extinct pampatheres and glyptodonts. It was present from 4.9 Mya to 11,000 years ago, existing for approximately 4.889 million years.
Stockoceros is an extinct genus of the North American artiodactyl family Antilocapridae (pronghorns), known from what is now Mexico and the southwestern United States. The genus survived until about 12,000 years ago, and was present when Paleo-Indians reached North America.
The giant pika or Wharton's pika is an extinct mammal species in the family Ochotonidae. It lived during the Pleistocene and early Holocene in northern parts of North America. Very similar forms have also been found also in Siberia.
The Waccamaw Formation is a geologic formation in southeastern North Carolina and eastern South Carolina. It preserves fossils from the early Pleistocene epoch. The Waccamaw Formation contains two informal members: "upper" and "lower". The upper Waccamaw is ~2.0-1.8 million years old. The lower Waccamaw Formation is ~2.4-2.2 million years old.
The Fort Thompson Formation is a geologic formation in Florida. It preserves fossils dating back to the late Pleistocene. It was influenced by sea level changes.
The Caloosahatchee Formation is a geologic formation in Florida. It preserves fossils dating back to the Pleistocene.
The Beaumont Formation is a geologic formation in Texas. It preserves fossils dating back to the Pleistocene period.
The Camp Rice Formation is a geologic formation in west Texas and southern New Mexico. It preserves fossils of the Pliocene-Pleistocene. These include the distinctive Tonuco Mountain Local Fauna.
The Alamosa Formation is a geologic formation in Colorado. It preserves fossils. The formation was deposited by Lake Alamosa, a paleolake that existed from the Pliocene to the middle Pleistocene.
The Brawley Formation is a geologic formation in the Colorado Desert of southern California, located in northwestern Imperial County and eastern San Diego County.
The Manix Formation is a geologic formation in California. This formation dates to the Pleistocene Epoch and is known to preserve fossils. Specimens of the extinct camelid, Camelops have been uncovered from the Rancholabrean units of this formation of both the species C. hesternus and C. minidokae.
The San Benito Gravels is a Quaternary Epoch geologic formation in California.
The Palm Spring Formation is a Pleistocene Epoch geologic formation in the eastern Colorado Desert of Imperial County and San Diego County County, Southern California.
The Turlock Lake Formation is an Early Pleistocene geologic formation in the Sierra Nevada foothills in Sacramento County, California. Cities in/over the formation's area include Citrus Heights, Carmichael, and Roseville.
The Scarborough Formation is a Pleistocene geologic formation in Ontario.
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