Mayoan

The Mayoan (Spanish: Mayoense) 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.[1]

Etymology

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

Formations

Locations of Mayoan formations

Formation bold is type	Country	Basin	Notes
Río Mayo Formation	Argentina	Golfo San Jorge Basin	[2]
Coquimbo Formation	Chile	Tongoy Bay	[3]
Gran Bajo del Gualicho Formation	Argentina	Colorado Basin	[4]
Huaylas Formation	Chile	Parinacota Province	[5]
Mauri Formation	Bolivia	Altiplano Basin	[6]
Navidad Formation	Chile	Chilean Coast Range	[7]
Paraná Formation	Argentina	Paraná Basin	[8]
Pebas Formation	Brazil  Colombia  Ecuador  Peru	Amazon Basin	[9][10]
Pisco Formation	Peru	Pisco Basin	[11]
Puerto Madryn Formation	Argentina	Valdés Basin	[12]
Urumaco Formation	Venezuela	Falcón Basin	[13]
Yecua Formation	Bolivia	Paraná Basin	[14]

Fossil content

Group	Fossils	Formation	Notes
Mammals	Megathericulus patagonicus	Río Mayo	[15]
	Caraguatypotherium munozi, Epipeltephilus caraguensis	Huaylas	[16][17]
	Brujadelphis ankylorostris	Pisco	[18]
	Cardiatherium patagonicum, Kawas benegasorum, Notoziphius bruneti, Scirrotherium carinatum, Lagostomus (Lagostomopsis) sp., Dolichotinae indet., Macraucheniidae indet., Mylodontinae indet., Neuryurini indet., Palaehoplophorini indet.	Puerto Madryn	[19][20] [21][22]
	cf. Theosodon sp.	Yecua	[23]
Birds	Kuntur cardenasi, Ramphastosula aguirrei, Sula brandi, S. figueroae	Pisco	[24][25]
	Madrynornis mirandus, Palaeospheniscus bergi, Accipitridae indet., Dendrocygninae indet., Psilopteridae indet.	Puerto Madryn	[19][20] [26][27]
Reptiles	Mourasuchus sp., Pleurodira indet.	Yecua	[28]
Fishes	Cosmopolitodus hastalis	Coquimbo	[29]
	Loricariidae indet., Percomorpha indet., Siluriformes indet.	Puerto Madryn	[19]
	cf. Ariidae indet., Teleostei indet.	Yecua	[28]

References

1. 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. Arroyo Pedregoso at Fossilworks.org
16. Montoya Sanhueza et al., 2017
17. Caragua at Fossilworks.org
18. Lambert et al., 2017
19. Rincón Chico at Fossilworks.org
20. La Pastosa at Fossilworks.org
21. Punta San Román at Fossilworks.org
22. Playa El Doradillo at Fossilworks.org
23. Yecua at Fossilworks.org
24. Stucchi et al., 2015a
25. Stucchi et al., 2015b
26. Puerto Madryn Autodromo at Fossilworks.org
27. Playa Villarino at Fossilworks.org
28. La Angostura, Margin of Piraí River at Fossilworks.org
29. Tongoy area Unit 4 at Fossilworks.org

Bibliography

Río Mayo Formation

• Ecosteguy, Leonardo; Carlos Dal Molín; Mario Franchi; Silvena Guena; Omar Lapido, and Adolfo Genini. 2003. Hoja Geológica 4772-II Lago Buenos Aires, 1–80. Instituto de Geología y Recursos Minerales, Servicio Geológico Minero Argentino. Accessed 2018-09-10.

Coquimbo Formation

• Le Roux, J.P.; Danisa M. Olivares; Sven N. Nielsen; Norman D. Smith; Heather Middleton; Juliane Fenner, and Scott E. Ishman. 2006. Bay sedimentation as controlled by regional crustal behaviour, local tectonics and eustatic sea-level changes: Coquimbo Formation (Miocene–Pliocene), Bay of Tongoy, central Chile. Sedimentary Geology 184. 133–153. Accessed 2018-05-20.

Gran Bajo del Gualicho Formation

• Reichler, Valeria A. 2010. Estratigrafía y paleontología del Cenozoico marino del Gran Bajo y Salinas del Gualicho, Argentina, y descripción de 17 especies nuevas. Andean Geology 31. 177–219. Accessed 2018-09-11.

Huaylas Formation

• García, Marcelo; Gérard Herail, and Reynaldo Charrier. 1999. Age and structure of the Oxaya Anticline: A major feature of the Miocene compressive structures of northernmost Chile, 249–252. Fourth ISAG conference, Goettingen, Germany. Accessed 2018-09-04.
• Montoya Sanhueza, Germán; Karen Moreno; René Bobe; Matthew T. Carrano; Marcelo García, and Alexandre Corgne. 2017. Peltephilidae and Mesotheriidae (Mammalia) from late Miocene strata of Northern Chilean Andes, Caragua. Journal of South American Earth Sciences 75. 51–65. Accessed 2019-02-12.

Mauri Formation

• Marshall, Larry G., and Thierry Sempere. 1991. The Eocene to Pleistocene vertebrates of Bolivia and their stratigraphic context: A review. Revista técnica de YPFB 12. 631–652. Accessed 2017-08-15.

Navidad Formation

• Finger, Kenneth L.; Sven N. Nielsen; Thomas J. DeVries; Alfonso Encinas, and Dawn E. Peterson. 2007. Paleontologic evidence for sedimentary displacement in Neogene forearc basins of central Chile. PALAIOS 22. 3–16. Accessed 2017-08-15.

Paraná Formation

• Cione, Alberto Luis; Daniel Alfredo Cabrera, and María Julia Barla. 2012. Oldest record of the Great White Shark (Lamnidae, Carcharodon; Miocene) in the Southern Atlantic. Geobios 45. 167–172. Accessed 2017-10-22.
• Martín Pérez, Leandro. 2013. Sistemática, tafonomía y paleoecología de los invertebrados de la Formación Paraná (Mioceno), Provincia de Entre Ríos, Argentina (PhD thesis), 1–398. Universidad Nacional de La Plata. Accessed 2017-08-15.

Pebas Formation

• Antoine, Pierre-Olivier; M. Alejandra Abello; Sylvain Adnet; Ali J. Altamirano Sierra; Patrice Baby; Guillaume Billet; Myriam Boivin; Ysabel Calderón, and Adriana Candela, Jules Chabain, Fernando Corfu, Darin A. Croft, Morgan Ganerød, Carlos Jaramillo, Sebastian Klaus, Laurent Marivaux, Rosa E. Navarrete, Maëva J. Orliac, Francisco Parra, María Encarnación Pérez, François Pujos, Jean-Claude Rage, Anthony Ravel, Céline Robinet, Martin Roddaz, Julia Victoria Tejada Lara, Jorge Vélez Juarbe, Frank P. Wesselingh, Rodolfo Salas Gismondi. 2016. A 60-million-year Cenozoic history of western Amazonian ecosystems in Contamana, eastern Peru. Gondwana Research 31. 30–59. Accessed 2017-08-15.
• Wesselingh, F.P.; M.C. Hoorn; J. Guerrero; M.E. Räsänen; L. Romero Pittmann, and J. Salo. 2006. The stratigraphy and regional structure of Miocene deposits in western Amazonia (Peru, Colombia and Brazil), with implications for late Neogene landscape evolution. Scripta Geologica 133. 291–322. Accessed 2017-08-15.

Pisco Formation

• Altamirano Sierra, Alí J. 2013. Primer registro de pelicano (Aves: Pelecanidae) para el Mioceno tardio de la formacion Pisco, Peru. Bulletin de l'Institut français d'études andines 42. 1–12. Accessed 2017-09-04.
• Báez Gómez, Diego A. 2006. Estudio paleoambiental de la formación Pisco:: Localidad Ocucaje. Revista del Instituto de Investigaciones FIGMMG 9. 64–69. Accessed 2017-09-04.
• Bianucci, Giovanni; Claudio Di Celma; Mario Urbina, and Olivier Lambert. 2016. New beaked whales from the late Miocene of Peru and evidence for convergent evolution in stem and crown Ziphiidae (Cetacea, Odontoceti). PeerJ 4. e2479. Accessed 2019-02-12.
• Brand, Leonard; Mario Urbina; Arthur Chadwick; Thomas J. DeVries, and Raul Esperante. 2011. A high resolution stratigraphic framework for the remarkable fossil cetacean assemblage of the Miocene/Pliocene Pisco Formation, Peru. Journal of South American Earth Sciences 31. 414–425. Accessed 2017-10-01.
• Collareta, Alberto; Olivier Lambert; Christian De Muizon; Mario Urbina, and Giovanni Bianucci. 2017. Koristocetus pescei gen. et sp. nov., a diminutive sperm whale (Cetacea: Odontoceti: Kogiidae) from the late Miocene of Peru. Fossil Record 20. 259–278. Accessed 2019-02-12.
• Lambert, Olivier; Giovanni Bianucci; Mario Urbina, and Jonathan H. Geisler. 2017. A new inioid (Cetacea, Odontoceti, Delphinida) from the Miocene of Peru and the origin of modern dolphin and porpoise families. Zoological Journal of the Linnean Society 179. 919–946.
• Marx, Felix G.; Olivier Lambert, and Christian De Muizon. 2017. A new Miocene baleen whale from Peru deciphers the dawn of cetotheriids. Royal Society Open Science 4. 170560. Accessed 2019-02-12.
• Marx, Felix G., and Naoki Kohno. 2016. A new Miocene baleen whale from the Peruvian desert. Royal Society Open Science 3. 160542. Accessed 2019-02-12.
• Poma Porras, Orlando; Edgard Horna Santillán, and Raúl Esperante. 2009. Baleen Fósil (Cetacea: mysticeti) en Sedimentos de la Cuenca Marina del Neógeno en la Formación Pisco, al Sur del Perú. Revista de Investigación Universitaria 1. 84–97. Accessed 2017-09-04.
• Ramassamy, Benjamin; Olivier Lambert; Alberto Collareta; Mario Urbina, and Giovanni Bianucci. 2018. Description of the skeleton of the fossil beaked whale Messapicetus gregarius: searching potential proxies for deep-diving abilities. Fossil Record 21. 11–32. Accessed 2019-02-11.
• Solís Mundaca, Flavio Alejandro. 2018. Bioestratigrafía e implicancias paleoceanográficas de las diatomeas de la sección Cerro Caucato, Formación Pisco, Ica, Peru (MSc. thesis), 1–158. Universidad Peruana Cayetano Heredia. Accessed 2018-09-10.
• Stucchi, Marcelo; Steven D. Emslie; Rafael M. Varas Malca, and Mario Urbina Schmitt. 2015a. A new late Miocene condor (Aves, Cathartidae) from Peru and the origin of South American condors. Journal of Vertebrate Paleontology 35. e972507. Accessed 2019-02-13.
• Stucchi, Marcelo; Rafael M. Varas Malca, and Mario Urbina Schmitt. 2015b. New Miocene sulid birds from Peru and considerations on their Neogene fossil record in the Eastern Pacific Ocean. Acta Palaeontologica Polonica 61. 417–427. Accessed 2019-02-13.
• Stucchi, M. 2007. Los pingüinos de la Formación Pisco (Neógeno), Perú. 4th European Meeting on the Palaeontology and Stratigraphy of Latin America, Cuadernos del Museo Geominero 8. 367–373. Accessed 2017-09-04.

Puerto Madryn Formation

• Acosta Hospitaleche, C.; C. Tambussi; M. Donato, and M. Cozzuol. 2007. A new Miocene penguin from Patagonia and its phylogenetic relationships. Acta Palaeontologica Polonica 52. 299–314. Accessed 2017-10-25.
• Acosta Hospitaleche, Carolina. 2003. Paraptenodytes antarcticus (Aves: Sphenisciformes) en la Formación Puerto Madryn (Mioceno Tardío temprano), provincia de Chubut, Argentina [Paraptenodytes antarcticus (Aves: Sphenisciformes) in the Puerto Madryn Formation (early Late Mioceno), Chubut Province, Argentina]. Española de Paleontología 18. 179–183. Accessed 2018-09-11.

Urumaco Formation

• Carrillo Briceño, Jorge D.; Erin Maxwell; Órangel A. Aguilera; Rodolfo Sánchez, and Marcelo R. Sánchez Villagra. 2015. Sawfishes and Other Elasmobranch Assemblages from the Mio-Pliocene of the South Caribbean (Urumaco Sequence, Northwestern Venezuela). PLoS ONE 10. e0139230. Accessed 2019-02-13.
• Linares, Omar J. 2004. Bioestratigrafía de la fauna de mamíferos de las formaciones Socorro, Urumaco y Codore (Mioceno Medio-Plioceno Temprano) de la región de Urumaco, Falcón, Venezuela. Paleobiología Neotropical 1. 1–26. Accessed 2017-08-15.
• Quijano Ballesteros, Jhon Richard. 2005. Estudio magnetoestratigráfico en la sección de El Mamón (miembro medio de la Formación Urumaco, Estado Falcón) (MSc. thesis), 1–92. Universidad Simón Bolívar. Accessed 2017-10-27.
• Rincón, Ascanio D.; Andrés Solórzano; H. Gregory McDonald, and Marisol Montellano Ballesteros. 2018. Two new megalonychid sloths (Mammalia: Xenarthra) from the Urumaco Formation (late Miocene), and their phylogenetic affinities. Journal of Systematic Palaeontology 17. 409–421. Accessed 2019-02-11.
• Rincón, Ascanio D.; H. Gregory McDonald; Andrés Solórzano; Mónica Núñez Flores, and Damián Ruiz Ramoni. 2015. A new enigmatic Late Miocene mylodontoid sloth from northern South America. Royal Society Open Science 2. 140256. Accessed 2019-02-13.

Yecua Formation

• Hernández, R.; T. Jordan; A. Dalenz Farjat; L. Echavarría; B. Idelman, and J. Reynolds. 2002. Edades, distribución, controles tectónicos y eustáticos de las ingresiones marinas paranense y caribeana en el sur de Bolivia y Argentina, 1–27. V Congreso Latinoamericano de Paleontología. Accessed 2018-09-10.