Riochican

The Riochican (Template:Lang-es) age is a period of geologic time (57.0–54.0 Ma) within the Paleocene and Eocene epochs of the Paleogene, used more specifically within the South American land mammal ages (SALMA). It follows the Peligran and precedes the Itaboraian age.^[1]

Etymology

This age is named after the Río Chico Group of the Golfo San Jorge Basin.

Formations

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Locations of Riochican formations

Formation bold is type	Country	Basin	Notes
Río Chico Group	Argentina	Golfo San Jorge Basin	^[2]
Bogotá Formation	Colombia	Altiplano Cundiboyacense	^[3]
Bororó Formation	Argentina	Golfo San Jorge Basin	^[4]
Chota Formation	Peru	Bagua Basin	^[5]^[6]
Koluel Kaike Formation	Argentina	Golfo San Jorge Basin	^[7]
Las Flores Formation	Argentina	Austral Basin	^[8]
Maíz Gordo Formation	Argentina	Salta Basin	^[9]
Mealla Formation	Argentina	Salta Basin	^[10]
Mogollón Formation	Peru	Talara & Tumbes Basins	^[11]
Muñani Formation	Peru	Altiplano Basin	^[12]
Peñas Coloradas Formation	Argentina	Golfo San Jorge Basin	^[13]
Río Loro Formation	Argentina	Sierras Pampeanas	^[14]
Salamanca Formation	Argentina	Golfo San Jorge Basin	^[13]

Fossils

Group	Fossils	Formation	Notes
Mammals	Etayoa bacatensis	Bogotá	^[15]
	Brandmayria simpsoni, Ernestokokenia chaishoer, E. ?yirunhor, Isotemnus cf. primitivus, Palangania brandmayri, Anisolambda sp., Henricosbornia sp., Josepholeidya sp., Notopithecus sp., Othnielmarshia sp., Polydolops winecage, Ricardolydekkeria sp., Trigonostylops sp., Victorlemoinea sp., ?Eohyrax sp., ?Nemolestes sp., ?Notostylops sp., ?Pleurostylodon sp., ?Polystylops sp., ?Postpithecus sp., Dasypodidae indet.	Koluel Kaike	^[16]^[17] ^[18]
	Eoastrapostylops riolorense, Notonychops powelli, Satshatemnus bonapartei	Río Loro	^[19]
Reptiles & amphibians	Testudines indet.	Koluel Kaike	^[18]
	Pelomedusoides sp.	Maíz Gordo	^[20]
	Lorosuchus nodosus, Pelomedusoides cf. argentinensis	Río Loro	^[21]
Fishes	?Cyprinodon primulus	Maíz Gordo	^[22]
Insects	Anthicus sepultulus, Austrolibellula noroestenia, Carabites harringtoni, Celinapterix bellissima, Cryptophagus sunchalensis, Curculionites harringtoni, C. jujuyensis, C. magdalinus, C. parastictus, C. stebingeri, C. sunchalicus, C. wielandi, Curviarculia delicata, C. lamasi, Gryllites vocalis, Jujusia maizgorda, Latibasalia elongata, L. quispeae, Lebia harrelli, Ormenis devincta, Otiorhynchites aterrimus, O. crassus, Palaeomacromia multicellulata, Palaeophya argentina, Promegalestes singularis, Tenebrionites inclinans, Thyridates novokschonovi, ?Anthonomus sunchalensis, ?Corizus deflagratus, ?Cossonus devoratus, ?Haruspex defectus, ?Molanna derosa, ?Podabrus santaritensis, ?Trichodes stebingeri	Maíz Gordo	^[22]^[23] ^[24]^[25] ^[26]^[27] ^[28]^[29]
Flora	Banaraphyllum ovatum, Cissites patagonica, Cryptocaryoides mariasantisimensis, Dryophyllum australis, Fagophyllum duseni, Laurophyllum chubutensis, Laurophyllum piatnitzkyi, Myrica premira, Nothofagidites visserensis, Paranymphaea aristolochiaformis, Sterculia acuminataloba, Zizyphus chubutensis	Río Chico	^[30]^[31]
	Palmoxylon patagonicum	Bororó	^[32]
	Cordioxylon prototrichotoma	Peñas Coloradas	^[33]
	Palmoxylon patagonicum	Salamanca	^[32]

References

^ Paleo Database: Riochican
^ Raigemborn et al., 2010, p.240
^ Bayona et al., 2012, p.103
^ Scarfati et al., 2009, p.36
^ Chacaltana et al., 2015, p.2
^ Castro Medina, 2010, p.53
^ Raigemborn et al., 2010, p.251
^ Raigemborn et al., 2010, p.249
^ Narváez, 2009, p.24
^ Sánchez & Marquillas, 2010, p.389
^ Quispe Alcalá, 2010, p.21
^ Gelfo & Goin, 2011
^ ^a ^b Clyde et al., 2014, p.303
^ Pol & Powell, 2011, S9
^ Quebrada Mochuelo at Fossilworks.org
^ Bajo Palangana at Fossilworks.org
^ Bajo de la Palangana at Fossilworks.org
^ ^a ^b Cerro Redondo at Fossilworks.org
^ Aguas Chiquitas at Fossilworks.org
^ Quebrada del Puesto at Fossilworks.org
^ El Cadillal Lake at Fossilworks.org
^ ^a ^b Sierra Santa Bárbara East at Fossilworks.org
^ Quebrada El Gritón at Fossilworks.org
^ La Cuesta Azul at Fossilworks.org
^ El Fuerte at Fossilworks.org
^ La Mendieta at Fossilworks.org
^ El Garabatal at Fossilworks.org
^ Sunchal at Fossilworks.org
^ Sunchal Station 3 at Fossilworks.org
^ Cerro Funes at Fossilworks.org
^ Puerto Visser at Fossilworks.org
^ ^a ^b Palmoxylon at Fossilworks.org
^ Puerto Visser at Fossilworks.org

Bibliography

Bogotá Formation

Bororó Formation

Template:Cite LSA

Chota Formation

Las Flores Formation

Template:Cite LSA

Koluel Kaike Formation

Template:Cite LSA

Maíz Gordo Formation

Template:Cite LSA

Mealla Formation

Template:Cite LSA

Mogollón Formation

Muñani Formation

Template:Cite LSA

Peñas Coloradas Formation

Río Loro Formation

Template:Cite LSA

Salamanca Formation

[1] Paleo Database: Riochican

[Raigemborn2010_p240-2] Raigemborn et al., 2010, p.240

[Bayona_p103-3] Bayona et al., 2012, p.103

[Scarfati2009_p36-4] Scarfati et al., 2009, p.36

[Chacaltana_p2-5] Chacaltana et al., 2015, p.2

[CastroMedina2010_p53-6] Castro Medina, 2010, p.53

[Raigemborn2010_p251-7] Raigemborn et al., 2010, p.251

[Raigemborn2010_p249-8] Raigemborn et al., 2010, p.249

[Narvaez2009_p24-9] Narváez, 2009, p.24

[Sanchez2010_p389-10] Sánchez & Marquillas, 2010, p.389

[Quispe2010_p21-11] Quispe Alcalá, 2010, p.21

[GelfoGoin2011-12] Gelfo & Goin, 2011

[Clyde_p303-13] Clyde et al., 2014, p.303

[PolPowell2011_S9-14] Pol & Powell, 2011, S9

[FWQuebradaMochuelo-15] Quebrada Mochuelo at Fossilworks.org

[FWBajoPalangana-16] Bajo Palangana at Fossilworks.org

[FWBajoDeLaPalangana-17] Bajo de la Palangana at Fossilworks.org

[FWCerroRedondo-18] Cerro Redondo at Fossilworks.org

[FWAguasChiquitas-19] Aguas Chiquitas at Fossilworks.org

[FWQuebradaDelPuesto-20] Quebrada del Puesto at Fossilworks.org

[FWElCadillalLake-21] El Cadillal Lake at Fossilworks.org

[FWSierraSantaBarbaraEast-22] Sierra Santa Bárbara East at Fossilworks.org

[FWQuebradaElGriton-23] Quebrada El Gritón at Fossilworks.org

[FWLaCuestaAzul-24] La Cuesta Azul at Fossilworks.org

[FWElFuerte-25] El Fuerte at Fossilworks.org

[FWLaMendieta-26] La Mendieta at Fossilworks.org

[FWElGarabatal-27] El Garabatal at Fossilworks.org

[FWSunchal-28] Sunchal at Fossilworks.org

[FWSunchal3-29] Sunchal Station 3 at Fossilworks.org

[FWCerroFunes-30] Cerro Funes at Fossilworks.org

[FWPuertoVisser3-31] Puerto Visser at Fossilworks.org

[FWPalmoxylon-32] Palmoxylon at Fossilworks.org

[FWPuVisser-33] Puerto Visser at Fossilworks.org

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