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Riochican

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The Riochican (Spanish: Riochiquense) 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

Riochican is located in South America
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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

  1. ^ Paleo Database: Riochican
  2. ^ Raigemborn et al., 2010, p.240
  3. ^ Bayona et al., 2012, p.103
  4. ^ Scarfati et al., 2009, p.36
  5. ^ Chacaltana et al., 2015, p.2
  6. ^ Castro Medina, 2010, p.53
  7. ^ Raigemborn et al., 2010, p.251
  8. ^ Raigemborn et al., 2010, p.249
  9. ^ Narváez, 2009, p.24
  10. ^ Sánchez & Marquillas, 2010, p.389
  11. ^ Quispe Alcalá, 2010, p.21
  12. ^ Gelfo & Goin, 2011
  13. ^ a b Clyde et al., 2014, p.303
  14. ^ Pol & Powell, 2011, S9
  15. ^ Quebrada Mochuelo at Fossilworks.org
  16. ^ Bajo Palangana at Fossilworks.org
  17. ^ Bajo de la Palangana at Fossilworks.org
  18. ^ a b Cerro Redondo at Fossilworks.org
  19. ^ Aguas Chiquitas at Fossilworks.org
  20. ^ Quebrada del Puesto at Fossilworks.org
  21. ^ El Cadillal Lake at Fossilworks.org
  22. ^ a b Sierra Santa Bárbara East at Fossilworks.org
  23. ^ Quebrada El Gritón at Fossilworks.org
  24. ^ La Cuesta Azul at Fossilworks.org
  25. ^ El Fuerte at Fossilworks.org
  26. ^ La Mendieta at Fossilworks.org
  27. ^ El Garabatal at Fossilworks.org
  28. ^ Sunchal at Fossilworks.org
  29. ^ Sunchal Station 3 at Fossilworks.org
  30. ^ Cerro Funes at Fossilworks.org
  31. ^ Puerto Visser at Fossilworks.org
  32. ^ a b Palmoxylon at Fossilworks.org
  33. ^ Puerto Visser at Fossilworks.org

Bibliography

Bogotá Formation
  • Bloch, Jonathan Ivan; Cadena, Edwin; Hastings, Alexander; Rincón, Aldo F.; Jaramillo, Carlos (2008), "Vertebrate faunas from the Paleocene Bogotá Formation of northern Colombia (Abstract)", Journal of Vertebrate Paleontology, Society of Vertebrate Paleontology, 68th Annual Meeting: _, retrieved 2017-03-29
  • Guerrero Uscátegui, Alberto Lobo (1992), Geología e Hidrogeología de Santafé de Bogotá y su Sabana, Sociedad Colombiana de Ingenieros, pp. 1–20
  • Montoya Arenas, Diana María; Reyes Torres, Germán Alfonso (2005), Geología de la Sabana de Bogotá, INGEOMINAS, pp. 1–104
Bororó Formation
Chota Formation
Las Flores Formation
Koluel Kaike Formation
Maíz Gordo Formation
Mealla Formation
Mogollón Formation
Muñani Formation
Peñas Coloradas Formation
Río Loro Formation
Salamanca Formation
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