The Chasicoan (Spanish: Chasiquense or Spanish: Chasicoense) age is a period of geologic time from 10–9 Ma within the Late Miocene epoch of the Neogene, used more specifically within the SALMA classification in South America. It follows the Mayoan and precedes the Huayquerian age.[1]

Etymology

The Chasicoan is named after the Arroyo Chasicó Formation of the Colorado Basin in northeastern Argentina.

Formations

Chasicoan is located in South America
Chasicoan
Chasicoan
Chasicoan
Chasicoan
Chasicoan
Chasicoan
Chasicoan
Chasicoan
Chasicoan
Chasicoan
Chasicoan
Chasicoan
Chasicoan
Chasicoan
Locations of Chasicoan formations
Formation
bold is type
Country Basin Notes
Arroyo Chasicó Formation ArgentinaColorado Basin
Bahía Inglesa Formation ChileCaldera Basin
Caujarao Formation VenezuelaFalcón Basin
Cerro Azul Formation ArgentinaColorado Basin
Coquimbo Formation ChileTongoy Bay
Loma de Las Tapias Formation ArgentinaTulum Valley
Madre de Dios Formation PeruMadre de Dios Basin
Mauri Formation BoliviaAltiplano Basin
Navidad Formation ChileChilean Coast Range
Puerto Madryn Formation ArgentinaValdés Basin
Paraná Formation ArgentinaParaná Basin
Pebas Formation Brazil
 Colombia
 Ecuador
 Peru
Amazon Basin
Pisco Formation PeruPisco Basin
Urumaco Formation VenezuelaFalcón Basin

Fossil content

Group Fossils Formation Notes
MammalsCardiatherium chasicoense, Cardiomys leufuensis, Chasicobradys intermedius, Chasicostylus castroi, Chasicotatus ameghinoi, Epipeltephilus kanti, Lagostomus telenkechanum, Lycopsis viverensis, Paedotherium minor, Pisanodon nazari, Protomegalonyx chasicoensis, Pseudolycopsis cabrerai, Vetelia perforata, Kraglievichia sp., Orthomyctera sp., ?Parodimys sp., Proeuphractus sp., ?Tetrastylus sp., Typotheriopsis sp., Hegetotheriinae indet., Hoplophorini indet., Palaehoplophorini indet., Plohophorini indet., Proterotheriinae indet.Arroyo
Chasicó
Chasichimys bonaerense, Chasicotatus ameghinoi, Macrochorobates scalabriniiCerro
Azul
Cardiatherium chasicoense, Contrerascynus borhyaenoidesLoma de
las Tapias
Notiomastodon sp.Madre de
Dios
Bolivartherium urumaquensis, Bounodus enigmaticus, Ischyrorhynchus cf. vanbenedeni, Pseudoprepotherium urumaquensis, Urumaquia robusta, Gyrinodon sp., Neoepiblema sp., Potamarchus sp., Ribodon sp., Saurocetes sp.Urumaco
BirdsPsilopterus colzecusArroyo
Chasicó
Leptoptilos patagonicusPuerto Madryn
Reptiles &
amphibians
Carlesia cf. pendolai, Anura indet., Testudines indet.Arroyo
Chasicó
Bairdemys venezuelensis, Caiman brevirostris, C. wannlangstoni, Charactosuchus mendesi, Globidentosuchus brachyrostris, Gryposuchus croizati, G. jessei, G. cf. pachakamue, Hesperogavialis cruxenti, Ikanogavialis gameroi, Melanosuchus fisheri, Mourasuchus arendsi, Purussaurus mirandai, Boinae indet.Urumaco
FishesMegalodon, Hemipristis serra, Carcharhinus sp., Galeocerdo sp., Rhinoptera sp., Sphyrna sp.Caujarao
Ariidae indet., Carcharhinidae indet., Dasyatidae indet., Hemigaleidae indet., Heterodontidae indet., Lamnidae indet., Myliobatidae indet., Odontaspididae indet., Otodontidae indet., Physeteroidea indet., Rajidae indet., Sciaenidae indet., Sparidae indet., Sphyrnidae indet., Squatinidae indet.Paraná
Megalodon, Arius couma, A. dowii, A. herzbergii, A. kessleri, A. quadriscutis, A. rugispinis, Bagre marinus, Carcharhinus caquetius, Epinephelus itajara, Galeocerdo cuvier, Hemipristis serra, Larimus henrii, L. steurbautti, Micropogonias coatesi, Phractocephalus nassi, Pristis pectinata, Carcharhinus sp., Cynoscion sp., Dasyatis sp., Equetus sp., Haemulon sp., Nebris sp., Rhinoptera sp., Sphyrna sp.Urumaco

References

  1. Chasicoan at Fossilworks.org
  2. 1 2 Pérez, 2012, p.11
  3. Le Roux et al., 2006, p.46
  4. Quijano Ballesteros, 2005, p.19
  5. Goin et al., 2000, p.101
  6. Verzi et al., 2008, p.146
  7. Le Roux et al., 2006, p.49
  8. Deschamps et al., 2009, p.296
  9. Romero et al., 1998, p.60
  10. Marshall & Sempere, 1991, p.636
  11. Finger et al., 2007, p.13
  12. Noriega & Cladera, 2008, p.594
  13. Martín Pérez, 2013, p.51
  14. Antoine et al., 2016, p.56
  15. Wesselingh et al., 2006, p.304
  16. Brand et al., 2011
  17. Linares, 2004, p.16
  18. Pérez et al., 2018
  19. Rasia & Candela, 2016
  20. González Ruiz et al., 2012
  21. Ribera del Arroyo Chasicó at Fossilworks.org
  22. Barrancas del Arroyo Chasicó at Fossilworks.org
  23. Las Barrancas at Fossilworks.org
  24. 1 2 3 Arroyo Chasicó at Fossilworks.org
  25. Cerro La Bota at Fossilworks.org
  26. Mones, 2014
  27. Quebrada Ullum at Fossilworks.org
  28. Loma de Las Tapias Localidad Nº 4 at Fossilworks.org
  29. Aurinsa at Fossilworks.org
  30. 1 2 3 Urumaco Formation at Fossilworks.org
  31. Urumaco, Biozona 2 Loc 01-FU at Fossilworks.org
  32. Urumaco at Fossilworks.org
  33. Urumaco, Biozona 2 Loc 46-FU at Fossilworks.org
  34. Tío Gregorio - brown shales at Fossilworks.org
  35. 1 2 Tío Gregorio at Fossilworks.org
  36. 1 2 Northwest of San Rafael at Fossilworks.org
  37. Punta Buenos Aires at Fossilworks.org
  38. El Hatillo at Fossilworks.org
  39. Corralito Locality at Fossilworks.org
  40. Domo de Agua Blanca at Fossilworks.org
  41. Cerro Jose la Paz site, El Picache at Fossilworks.org
  42. Caujarao at Fossilworks.org
  43. Cantera del Puerto Viejo at Fossilworks.org
  44. Carrillo Briceño et al., 2015

Bibliography

Arroyo Chasicó Formation
Bahía Inglesa Formation
Caujarao Formation
Cerro Azul Formation
Coquimbo Formation
Loma de Las Tapias Formation
Madre de Dios Formation
Mauri Formation
Navidad Formation
Palo Pintado Formation
Paraná Formation
Pebas Formation
Pisco Formation
Puerto Madryn Formation
Urumaco Formation
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