| Dolores Formation | |
|---|---|
| Stratigraphic range: Lujanian ~ | |
| Type | Geological formation |
| Location | |
| Country |  Uruguay |
| Extent | Paraná Basin |
| Type section | |
| Named for | Dolores, Uruguay |
The Dolores Formation is a Lujanian geologic formation in Uruguay. [1] [2] [3]
| Dolores Formation | |
|---|---|
| Stratigraphic range: Lujanian ~ | |
| Type | Geological formation |
| Location | |
| Country | Uruguay |
| Extent | Paraná Basin |
| Type section | |
| Named for | Dolores, Uruguay |
The Dolores Formation is a Lujanian geologic formation in Uruguay. [1] [2] [3]
The following fossils have been reported from the formation:
Stegomastodon is an extinct genus of gomphotheres. It ranged throughout North America from the Pliocene, to the Early Pleistocene. The former South American species have been synonymized with Notiomastodon platensis.
Caracara is a genus in the family Falconidae and the subfamily Polyborinae. It contains one extant species, the crested caracara; and one recently extinct species, the Guadalupe caracara. The South American Classification Committee of the American Ornithological Society has voted to again merge the two, retaining C. plancus as crested caracara. The taxonomists of the International Ornithologists' Union have also merged them.
Panochthus is an extinct genus of glyptodont, which lived in the Gran Chaco-Pampean region of Argentina, Brazil, Bolivia, Paraguay and Uruguay during the Pleistocene epoch.
Scelidodon is an extinct genus of South American ground sloths. Its remains have been found in the Yupoí and Uspara Formations of Argentina, the Ulloma, Umala, Ñuapua and Tarija Formations of Bolivia, in Brazil, in Chile and in Peru. The youngest fossils have been dated to as recently as 9000 B.P.
Notiomastodon is an extinct genus of gomphothere proboscidean, endemic to South America from the Pleistocene to the beginning of the Holocene. Notiomastodon specimens reached a size similar to that of the modern Asian elephant, with a body mass of 3-4 tonnes. Like other brevirostrine gomphotheres such as Cuvieronius and Stegomastodon, Notiomastodon had a shortened lower jaw and lacked lower tusks, unlike more primitive gomphotheres like Gomphotherium.
The Guichón Formation is a Late Cretaceous geologic formation of the Paysandú Group in Uruguay. Dinosaur remains are among the fossils that have been recovered from the formation.
Lestobradys is an extinct genus of ground sloth, which existed in Uruguay during the Late Miocene period; Huayquerian in the South American land mammal age (SALMA). The type species is L. sprechmanni, found in the Camacho Formation of Uruguay.
Equus neogeus is an extinct species of equine native to South America during the Pleistocene. It was formerly thought to be several distinct species within the subgenus Amerhippus, but was later shown to be a single morphologically variable species. It is thought to be closely related to true horses.
The Cuscatlán Formation is a geologic formation in El Salvador. It preserves fossils dating back to the Pliocene to Middle Pleistocene period.
Surameryx is an extinct genus of herbivorous artiodactyls originally described as belonging to the extinct family Palaeomerycidae. A single species, S. acrensis, was described from the Late Miocene of the Madre de Dios Formation, South America. It was originally interpreted as one of the few northern mammals that entered South America before the Pliocene. However, both its identification as a member of the family Palaeomerycidae and claims about its Miocene age were subsequently challenged.
Neolicaphrium is an extinct genus of ungulate mammal belonging to the extinct order Litopterna. This animal lived from the Late Pliocene (Chapadmalalan) to the Late Pleistocene (Lujanian) in southern South America, being the last survivor of the family Proterotheriidae.
Charruatoxodon is an extinct monotypic genus of notoungulate belonging to the family Toxodontidae. It lived from the Pliocene to the Early Pleistocene in what is now southern Uruguay. Its remains have been found in the San José member of the Raigón Formation, near Montevideo.
Neuryurus is an extinct genus of glyptodont. It lived from the Late Pliocene to the Early Holocene, and its fossilized remains were discovered in South America.
The Sopas Formation is a Lujanian geologic formation in Uruguay.
The Libertad Formation is a Lujanian geologic formation in Uruguay.
The Raigón Formation is a geologic formation in Uruguay dated between the Pliocene and Middle Pleistocene.
The Camacho Formation is a Huayquerian geologic formation in Uruguay.
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