Mayoan

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title: "Mayoan" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["mayoan", "miocene-south-america", "neogene-argentina"] topic_path: "geography/argentina" source: "https://en.wikipedia.org/wiki/Mayoan" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

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.

Etymology

The age is named after the Río Mayo Formation in the Golfo San Jorge Basin of Patagonia, Argentina.

Formations

| relief = 1 | width = 300 | caption = Locations of Mayoan formations | places = | lat_deg = -30.339167 | lon_deg = -71.534167 | mark = Yellow ffff00 pog.svg | marksize = 10 | link = Coquimbo Formation | lat_deg = -40.4 | lon_deg = -65.3 | mark = Yellow ffff00 pog.svg | marksize = 10 | link = Gran Bajo de Gualicho Formation | lat_deg = -18.5 | lon_deg = -69.6 | mark = Yellow ffff00 pog.svg | marksize = 10 | link = Huaylas Formation | lat_deg = -17.1 | lon_deg = -69.2 | mark = Yellow ffff00 pog.svg | marksize = 10 | link = Mauri Formation | lat_deg = -34.0 | lon_deg = -71.8 | mark = Yellow ffff00 pog.svg | marksize = 10 | link = Navidad Formation | lat_deg = -33.7 | lon_deg = -59.3 | mark = Yellow ffff00 pog.svg | marksize = 10 | link = Paraná Formation | lat_deg = -7.4 | lon_deg = -75.0 | mark = Yellow ffff00 pog.svg | marksize = 10 | link = Pebas Formation | lat_deg = -15.7 | lon_deg = -74.5 | mark = Yellow ffff00 pog.svg | marksize = 10 | link = Pisco Formation | lat_deg = -42.7 | lon_deg = -65.0 | mark = Yellow ffff00 pog.svg | marksize = 10 | link = Puerto Madryn Formation | lat_deg = 11.2 | lon_deg = -70.0 | mark = Yellow ffff00 pog.svg | marksize = 10 | link = Urumaco Formation | lat_deg = -18.2 | lon_deg = -63.5 | mark = Yellow ffff00 pog.svg | marksize = 10 | link = Yecua Formation | lat_deg = -46.0 | lon_deg = -71.6 | mark = Yellow ffff00 pog.svg | marksize = 14 | link = Río Mayo Formation ::data[format=table] | Formation bold is type | Country | Basin | Notes | |---|---|---|---| | Río Mayo Formation | | Golfo San Jorge Basin | | | Coquimbo Formation | | Tongoy Bay | | | Gran Bajo del Gualicho Formation | | Colorado Basin | | | Huaylas Formation | | Parinacota Province | | | Mauri Formation | | Altiplano Basin | | | Navidad Formation | | Chilean Coast Range | | | Paraná Formation | | Paraná Basin | | | Pebas Formation |

| Amazon Basin | | | Pisco Formation | | Pisco Basin | | | Puerto Madryn Formation | | Valdés Basin | | | Urumaco Formation | | Falcón Basin | | | Yecua Formation | | Paraná Basin | | ::

Fossil content

::data[format=table]

GroupFossilsFormationNotes
MammalsMegathericulus patagonicusRío Mayo
Caraguatypotherium munozi, Epipeltephilus caraguensisHuaylas
Brujadelphis ankylorostrisPisco
Cardiatherium patagonicum, Kawas benegasorum, Notoziphius bruneti, Scirrotherium carinatum, Lagostomus (Lagostomopsis) sp., Dolichotinae indet., Macraucheniidae indet., Mylodontinae indet., Neuryurini indet., Palaehoplophorini indet.[Puerto
Madryn](puerto-madryn-formation)
cf. Theosodon sp.Yecua
BirdsKuntur cardenasi, Ramphastosula aguirrei, Sula brandi, S. figueroaePisco
Madrynornis mirandus, Palaeospheniscus bergi, Accipitridae indet., Dendrocygninae indet., Psilopteridae indet.[Puerto
Madryn](puerto-madryn-formation)
ReptilesMourasuchus sp., Pleurodira indet.Yecua
FishesCosmopolitodus hastalisCoquimbo
Loricariidae indet., Percomorpha indet., Siluriformes indet.[Puerto
Madryn](puerto-madryn-formation)
cf. Ariidae indet., Teleostei indet.Yecua
::

References

Bibliography

;Río Mayo Formation

;Coquimbo Formation

;Gran Bajo del Gualicho Formation

;Huaylas Formation

;Mauri Formation

  • {{citation |last1=Marshall |first1=Larry G. |last2=Sempere |first2=Thierry |year=1991 |title=The Eocene to Pleistocene vertebrates of Bolivia and their stratigraphic context: A review |url=https://www.researchgate.net/publication/32979728 |journal=Revista técnica de YPFB |volume=12 |pages=631–652 |access-date=2017-08-15}}

;Navidad Formation

;Paraná Formation

  • {{citation |last=Martín Pérez |first=Leandro |year=2013 |title=Sistemática, tafonomía y paleoecología de los invertebrados de la Formación Paraná (Mioceno), Provincia de Entre Ríos, Argentina (PhD thesis) |url=http://naturalis.fcnym.unlp.edu.ar/repositorio/_documentos/tesis/tesis_1255.pdf |publisher=Universidad Nacional de La Plata |pages=1–398 |access-date=2017-08-15}}

;Pebas Formation

  • {{citation |last1=Wesselingh |first1=F.P. |last2=Hoorn |first2=M.C. |last3=Guerrero |first3=J. |last4=Räsänen |first4=M.E. |last5=Romero Pittmann |first5=L. |last6=Salo |first6=J. |year=2006 |title=The stratigraphy and regional structure of Miocene deposits in western Amazonia (Peru, Colombia and Brazil), with implications for late Neogene landscape evolution |url=http://www.repository.naturalis.nl/document/41347 |journal=Scripta Geologica |volume=133 |pages=291–322 |access-date=2017-08-15}}

;Pisco Formation

;Puerto Madryn Formation

;Urumaco Formation

;Yecua Formation

References

  1. [https://paleodb.org/cgi-bin/bridge.pl?action=displayInterval&interval_no=725 Paleo Database: Mayoan]
  2. Ecosteguy et al., 2003
  3. Le Roux et al., 2006, p.49
  4. Reichler, 2010, p.181
  5. García et al., 1999, p.251
  6. Marshall & Sempere, 1991, p.636
  7. Finger et al., 2007, p.13
  8. Martín Pérez, 2013, p.51
  9. Antoine et al., 2016, p.56
  10. Wesselingh et al., 2006, p.304
  11. Brand et al., 2011
  12. Acosta Hospitaleche et al., 2007, p.301
  13. Linares, 2004, p.16
  14. Hernández et al., 2002, p.5
  15. [https://paleobiodb.org/classic/displayCollResults?collection_no=141934 Arroyo Pedregoso] at [[Fossilworks]].org
  16. Montoya Sanhueza et al., 2017
  17. [https://paleobiodb.org/classic/displayCollResults?collection_no=144471 Caragua] at [[Fossilworks]].org
  18. Lambert et al., 2017
  19. [https://paleobiodb.org/classic/displayCollResults?collection_no=122079 Rincón Chico] at [[Fossilworks]].org
  20. [https://paleobiodb.org/classic/displayCollResults?collection_no=122031 La Pastosa] at [[Fossilworks]].org
  21. [https://paleobiodb.org/classic/displayCollResults?collection_no=59053 Punta San Román] at [[Fossilworks]].org
  22. [https://paleobiodb.org/classic/displayCollResults?collection_no=146855 Playa El Doradillo] at [[Fossilworks]].org
  23. [https://paleobiodb.org/classic/displayCollResults?collection_no=68623 Yecua] at [[Fossilworks]].org
  24. Stucchi et al., 2015a
  25. Stucchi et al., 2015b

  26. [https://paleobiodb.org/classic/displayCollResults?collection_no=136063 Puerto Madryn Autodromo] at [[Fossilworks]].org
  27. [https://paleobiodb.org/classic/displayCollResults?collection_no=74614 Playa Villarino] at [[Fossilworks]].org
  28. [https://paleobiodb.org/classic/displayCollResults?collection_no=167953 La Angostura, Margin of Piraí River] at [[Fossilworks]].org
  29. [https://paleobiodb.org/classic/displayCollResults?collection_no=68264 Tongoy area Unit 4] at [[Fossilworks]].org

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mayoanmiocene-south-americaneogene-argentina