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Huayquerian
The Huayquerian () 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 Chasicoan and precedes the Montehermosan age. Etymology The age is named after the Huayquerías Formation in the western Cuyo Basin of northwestern Argentina that was later dated to the Montehermosan The Montehermosan age is a period of geologic time (6.8–4.0 Mya (unit), 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 Chapadmalal .... The most complete Huayquerian fauna is found in the Cerro Azul Formation, in Buenos Aires Province also referred to as Epecuén Formation. Formations Fossil content Correlations Notes and references Notes References Bibliography ;Huayquerías Formation * * ;Andalhuala Formation * ;Camacho Formation * * * ;Cerro A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Huayquerías Formation
The Huayquerías Formation () is a Miocene, Late Miocene list of fossiliferous stratigraphic units in Argentina, fossiliferous formation (geology), geological formation of the Frontal Cordillera and Cuyo Basin of Argentina. The formation outcrop, crops out in the central Mendoza Province. The formation, with a maximum thickness of , comprises reddish mudstones with thin beds of tuffs and sandstones, deposited in a fluvial, depositional environment, environment. The tuff in the formation is dated to 5.84 ± 0.41 Ma, placing it in the Huayquerian South American land mammal age, SALMA, the age named after the formation by Kraglievitch in 1934. The formation has provided fossils of the Procyonidae, procyonid ''Cyonasua, Cyonasua pascuali'' and the Litopterna, litoptern ''Huayqueriana, Huayqueriana cristata'', named after the formation. Description The Huayqueriás Formation, present in the Frontal Cordillera and the neighboring Cuyo Basin, was described in 1934 by Kraglievitch as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
