Mayoan
Group Fossils Formation
Mammals Megathericulus patagonicus Río Mayo
Mammals Caraguatypotherium munozi , Epipeltephilus caraguensis Huaylas
Mammals Brujadelphis ankylorostris Pisco
Mammals Cardiatherium patagonicum , Kawas benegasorum , Notoziphius bruneti , Scirrotherium carinatum , Lagostomus ( Lagostomopsis ) sp . , Dolichotinae indet . , Macraucheniidae indet . , Mylodontinae indet . , Neuryurini indet . , Palaehoplophorini indet Puerto Madryn
Mammals cf . Theosodon sp Yecua
Birds Kuntur cardenasi , Ramphastosula aguirrei , Sula brandi , S. figueroae Pisco
Birds Madrynornis mirandus , Palaeospheniscus bergi , Accipitridae indet . , Dendrocygninae indet . , Psilopteridae indet Puerto Madryn
Reptiles Mourasuchus sp . , Pleurodira indet Yecua
Fishes Cosmopolitodus hastalis Coquimbo
Fishes Loricariidae indet . , Percomorpha indet . , Siluriformes indet Puerto Madryn
Fishes cf . Ariidae indet . , Teleostei indet Yecua
Fossil content
The Mayoan () age is a period of geologic time from 11.8 to 10 Ma, within the Middle to Late Miocene epoch of the Neogene, used more specifically within the SALMA classification in South America. It follows the Laventan and precedes the Chasicoan age.