Chapadmalalan

Period of geologic time

The Chapadmalalan age is a period of geologic time (4.0–3.0 Ma) within the Pliocene epoch of the Neogene used more specifically with South American Land Mammal Ages. It follows the Montehermosan and precedes the Uquian age.^[1]

Fossil content

Fossils of Josephoartigasia magna, a rodent in the family Dinomyidae from this age have been found in southern Uruguay.^[2]

References

^ Paleo Database: Chapadmalalan
^ Francis, J. C. & Mones, A. (1966). Artigasia magna n. g., n. sp. (Eumegamyinae), un roedor gigantesco de la época Pliocena Superior de las Barrancas de San Gregorio, Departamento de San José, República Oriental del Uruguay. Kraglieviana 3, 89–100.

South American land mammal ages

Ages

Lujanian
Ensenadan
Uquian
Chapadmalalan
Montehermosan
Huayquerian
Chasicoan
Mayoan
Laventan
Colloncuran
Friasian
Santacrucian
Colhuehuapian
Deseadan
Tinguirirican
Divisaderan
Mustersan
Casamayoran
Itaboraian
Riochican
Peligran
Tiupampan

Defining
formations
and sites

Quaternary	Luján Formation Ensenada Formation Uquía Formation
Neogene	Chapadmalal Formation Monte Hermoso Formation Huayquerías Formation Arroyo Chasicó Formation Río Mayo Formation Honda Group La Venta fauna Collón Curá Formation Río Frías Formation Santa Cruz Formation Colhué Huapí Member
Paleogene	Deseado Formation Abanico Formation Tinguiririca fauna Divisadero Largo Formation Sarmiento Formation Lake Musters Casamayor Formation Itaboraí Formation Río Chico Group Salamanca Formation Punta Peligro Santa Lucía Formation Tiupampa fauna