| 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, a family of proboscideans. It ranged throughout North America from the early Blancan ~4 Ma, to the early Irvingtonian. The South American species have been synonymized with Notiomastodon platensis.
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. Like other brevirostrine gomphotheres such as Cuvieronius and Stegomastodon, Notiomastodon had a shortened lower jaw and lacked lower tusks.
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.
Comahuetherium is an extinct genus of astrapotherian mammal from the Early Miocene. It is a basal astrapotheriid which lived in what is now Patagonia, Argentina. The holotype was found in the Cerro Bandera Formation in Neuquén Province, northern Patagonia and additional specimens were found at the Gran Barranca south of Lake Colhué Huapi, in Chubut Province of central Patagonia. It was first named by Alejandro Kramarz and Mariano Bond in 2011 and the type species is Comahuetherium coccaorum.
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 even-toed ungulates 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.
Catagonus stenocephalus is an extinct species of peccary that lived in South America during the Late Pleistocene. Fossils have been found in Brazil, Argentina and Bolivia. It is commonly known as the narrow-headed peccary due to its long and markedly convex rostrum.
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 Huayquerian-Montehermosan geologic formation in Uruguay.
The Camacho Formation is a Huayquerian geologic formation in Uruguay.
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