Marplatan


The Marplatan age is a period of geologic time in both the Pliocene and Pleistocene epochs, used specifically within the South American Land Mammal Ages.

Chronology

The Marplatan age follows the Chapadmalalan and precedes the Ensenadan age. The source localities for all three subages come from near Mar del Plata, Buenos Aires Province, Argentina.

Barrancalobian

The Barrancalobian is the first subage of the Marplatan, and is characterized by the Platygonus scagliai biozone. A possible cosmic impact occurred at the start of the Marplatan in Argentina.

Vorohuen

The Vorohuen subage contains the Akodon  lorenzinii biozone. The first canids and mustelids of South America appear in Vorohuen-age sediments of the Pampas.

Sanandresian

The Sanandresian subage concludes the Marplatan, and coincides with the Ctenomys chapalmalensis biozone. A broadly cold and arid climate began in the Sanandresian, which persisted into the Ensenadan age.