The Iquiri Formation is an Eifelian to Frasnian geologic formation of central Bolivia. The formation comprises black shales and sandstones.[1]

Iquiri Formation
Stratigraphic range: Eifelian-Frasnian
~392–377 Ma
Paleogeography of the Late Devonian (380 Ma)
TypeGeological formation
UnderliesSaipurú Formation
OverliesLos Monos Formation
Lithology
PrimaryBlack shale
OtherSandstone
Location
Coordinates18°00′S 65°00′W / 18.0°S 65.0°W / -18.0; -65.0
Approximate paleocoordinates69°48′S 78°36′W / 69.8°S 78.6°W / -69.8; -78.6
RegionCochabamba Department
Country Bolivia
ExtentCordillera Oriental
Iquiri Formation is located in Bolivia
Iquiri Formation
Iquiri Formation (Bolivia)

Fossil content

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The formation has provided fossils of Proteolobus walli.

See also

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References

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Further reading

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  • G. D. Wood. 1997. The acritarch Proteolobus walli gen et sp. nov. from the Devonian Iquiri Formation of Bolivia: a possible coenobial alga. Micropaleontology 43(3):325-331