''Eoauchenia'' is a genus of extinct
proterotheriid from the
Late Miocene
The Late Miocene (also known as Upper Miocene) is a sub-epoch of the Miocene epoch (geology), Epoch made up of two faunal stage, stages. The Tortonian and Messinian stages comprise the Late Miocene sub-epoch, which lasted from 11.63 Ma (million ye ...
and
Early Pliocene
Early may refer to:
History
* The beginning or oldest part of a defined historical period, as opposed to middle or late periods, e.g.:
** Early Christianity
** Early modern Europe
Places in the United States
* Early, Iowa
* Early, Texas
* Early ...
of
Argentina
Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...
. The genus was named by Ameghino in 1887 for the type species ''E. primitiva'', which was originally known from the early
Pliocene
The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58[Monte Hermoso Formation
Monte may refer to:
Places Argentina
* Argentine Monte, an ecoregion
* Monte Desert
* Monte Partido, a ''partido'' in Buenos Aires Province
Italy
* Monte Bregagno
* Monte Cassino
* Montecorvino (disambiguation)
* Montefalcione
Portugal
* Monte ...](_blank)
of the
Montehermosan
The Montehermosan age is a period of geologic time (6.8–4.0 Ma) within the Miocene and Pliocene epochs of the Neogene used more specifically with South American Land Mammal Ages. It follows the Huayquerian and precedes the Chapadmalalan
The C ...
age of
Buenos Aires Province
Buenos Aires (), officially the Buenos Aires Province (''Provincia de Buenos Aires'' ), is the largest and most populous Argentine province. It takes its name from the city of Buenos Aires, the capital of the country, which used to be part of th ...
, but has since been found in the
Cerro Azul Formation
The Cerro Azul Formation ( es, Formación Cerro Azul), in the Buenos Aires Province also described as Epecuén Formation, is a geological formation of Late Miocene (Tortonian, or Huayquerian in the SALMA classification) age in the Colorado Basin ...
of the late
Huayquerian The Huayquerian ( es, Huayqueriense) age is a period of geologic time (9.0–6.8 Ma) within the Late Miocene epoch of the Neogene, used more specifically within the SALMA classification. It follows the Mayoan and precedes the Montehermosan age.
...
of
La Pampa Province
La Pampa () is a sparsely populated province of Argentina, located in the Pampas in the center of the country. Neighboring provinces are from the north clockwise San Luis, Córdoba, Buenos Aires, Río Negro, Neuquén and Mendoza.
History
In ...
. The fossils originally known included postcranial remains like foot material, but teeth, a skull and skeleton, and mandibles and further postcrania have since been referred to ''Eoauchenia'', which can be distinguished from ''
Epitherium
''Epitherium'' is an extinct genus of Litopterna, who belonged to the family Proterotheriidae. It lived during the Pliocene in South America. The fossils of this herbivorous ungulate were found in Argentina
Argentina (), officially the ...
'' found alongside it by more gracile bones.
References
{{Taxonbar, from=Q112077467
Proterotheriids
Miocene mammals of South America
Neogene Argentina
Fossils of Argentina
Fossil taxa described in 1887
Taxa named by Florentino Ameghino
Cerro Azul Formation