Riochican
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 of the Golfo San Jorge Basin.
Formations[]
| Formation bold is type |
Country | Basin | Notes |
|---|---|---|---|
 Argentina |
Golfo San Jorge Basin | ||
| Bogotá Formation |  Colombia |
Altiplano Cundiboyacense | |
| Argentina |
Golfo San Jorge Basin | ||
| Chota Formation |  Peru |
||
| Argentina |
Golfo San Jorge Basin | ||
| Argentina |
Austral Basin | ||
| Argentina |
Salta Basin | ||
| Mealla Formation | Argentina |
Salta Basin | |
| Peru |
& | ||
| Peru |
Altiplano Basin | ||
| Argentina |
Golfo San Jorge Basin | ||
| Río Loro Formation | Argentina |
Sierras Pampeanas | |
| Argentina |
Golfo San Jorge Basin |
Fossils[]
| Group | Fossils | Formation | Notes |
|---|---|---|---|
| Mammals | Etayoa bacatensis | Bogotá | |
| , , , , , , , , , , , , Trigonostylops sp., Victorlemoinea sp., , , ?Notostylops sp., , , , Dasypodidae indet. | |||
| , , | Río Loro | ||
| Reptiles & amphibians |
Testudines indet. | ||
| Pelomedusoides sp. | |||
| Lorosuchus nodosus, Pelomedusoides cf. argentinensis | Río Loro | ||
| Fishes | |||
| Insects | Anthicus sepultulus, , , , Cryptophagus sunchalensis, , , , , , , , , , , , , , Lebia harrelli, Ormenis devincta, , , , , , , , ?Anthonomus sunchalensis, ?Corizus deflagratus, ?Cossonus devoratus, ?Haruspex defectus, ?Molanna derosa, ?Podabrus santaritensis, ?Trichodes stebingeri | ||
| Flora | , , , , , , , , , , , | ||
| Palmoxylon patagonicum | |||
| Palmoxylon patagonicum |
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
- ; ; ; , and . 2008. Vertebrate faunas from the Paleocene Bogotá Formation of northern Colombia (Abstract). Journal of Vertebrate Paleontology Society of Vertebrate Paleontology, 68th Annual Meeting. _. Accessed 2017-03-29.
- . 1992. Geología e Hidrogeología de Santafé de Bogotá y su Sabana, 1–20. Sociedad Colombiana de Ingenieros.
- , and . 2005. Geología de la Sabana de Bogotá, 1–104. INGEOMINAS.
- Bororó Formation
- ; , and . 2009. A Danian subtropical lacustrine palynobiota from South America (Bororó Formation, San Jorge Basin, Patagonia - Argentina). Geologica Acta 7. 35–61. Accessed 2018-09-10.
- Chota Formation
- . 2010. Geología, informe temático. Proyecto Zonificación Ecológica y Económica del departamento de Amazonas, 1–76. Instituto de Investigaciones de la Amazonía Peruana (IIAP). Accessed 2018-09-04.
- ; ; , and . 2014. La formación Chota en la Cuenca Bagua: Evaluación e implicancias del criterio de clasificación litoestratigráfico, 1–4. Congreso Peruano de Geología. Accessed 2017-08-15.
- Las Flores Formation
- ; ; , and . 2010. Redefinición estratigráfica del Grupo Río Chico (Paleógeno inferior), en el norte de la Cuenca del Golfo San Jorge, Chubut. Revista de la Asociación Geológica Argentina 67. 239–256. Accessed 2017-08-15.
- Koluel Kaike Formation
- ; ; , and . 2010. Redefinición estratigráfica del Grupo Río Chico (Paleógeno inferior), en el norte de la Cuenca del Golfo San Jorge, Chubut. Revista de la Asociación Geológica Argentina 67. 239–256. Accessed 2017-08-15.
- Maíz Gordo Formation
- . 2009. Palinoestratigrafía, paleoambientes y cambios climáticos durante el Cretácico final y Paleógeno de la Cuenca del Grupo Salta, República Argentina (PhD thesis), 1–229. Universidad Nacional de Salta. Accessed 2017-10-18.
- Mealla Formation
- , and . 2010. Facies y ambientes del Grupo Salta (Cretácico-Paleógeno) en Tumbaya, Quebrada de Humahuaca, Provincia de Jujuy. Revista de la Asociación Geológica Argentina 67. 383–391. Accessed 2018-09-07.
- Mogollón Formation
- ; ; ; ; ; , and . 2015. A New Carodnia Simpson, 1935 (Mammalia, Xenungulata) from the Early Eocene of Northwestern Peru and a Phylogeny of Xenungulates at Species Level. Journal of Mammalian Evolution 22. 129–140. Accessed 2019-02-13.
- . 2010. Evaluación Geológica de la Formación Mogollón en el Yacimiento Leones – Cuenca Talara (MSc. thesis), 1–87. Universidad Nacional de Ingeniería. Accessed 2017-10-18.
- Muñani Formation
- , and . 2011. A new didolodontid mammal from the late Paleocene–earliest Eocene of Laguna Umayo, Peru. Acta Palaeontologica Polonica 56. 665–678. Accessed 2017-08-15.
- Peñas Coloradas Formation
- ; ; ; ; ; ; ; , and . 2014. New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for Cretaceous-Paleogene extinction recovery and land mammal age correlations. GSA Bulletin 126. 289–306. Accessed 2017-08-15.
- ; ; , and . 2010. Redefinición estratigráfica del Grupo Río Chico (Paleógeno inferior), en el norte de la Cuenca del Golfo San Jorge, Chubut. Revista de la Asociación Geológica Argentina 67. 239–256. Accessed 2017-08-15.
- Río Loro Formation
- , and . 2011. A new sebecid mesoeucrocodylian from the Rio Loro Formation (Palaeocene) of north-western Argentina. Zoological Journal of the Linnean Society 163. S7–S36.
- Salamanca Formation
- ; , and . 2014. The youngest South American rhynchocephalian, a survivor of the K/Pg extinction. Proceedings of the Royal Society B: Biological Sciences 281. 20140811. Accessed 2019-03-03.
- , and . 1997. Un primitico Notonychopidae (Litopterna) del paleoceno inferior de Punta Peligro, Chubut, Argentina. Estudios Geológicos 53. 263–274. Accessed 2018-10-01.
- ; ; ; ; ; ; ; , and . 2014. New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for Cretaceous-Paleogene extinction recovery and land mammal age correlations. GSA Bulletin 126. 289–306. Accessed 2017-08-15.
- ; ; , and . 2017. Flowering after disaster: Early Danian buckthorn (Rhamnaceae) flowers and leaves from Patagonia. PLOS ONE 12. e0176164. Accessed 2019-02-14.
- ; ; , and . 2017. Conifer woods from the Salamanca Formation (early Paleocene), Central Patagonia, Argentina: Paleoenvironmental implications. Journal of South American Earth Sciences 76. 427–445. Accessed 2019-02-14.
| Ages |        | ||||||
|---|---|---|---|---|---|---|---|
| Defining formations and sites |
| ||||||
| Sources |
| ||||||
Categories:
- Riochican
- Paleocene South America
- Eocene South America
- Paleogene Argentina