Pircancha Formation

Pircancha Formation
Stratigraphic range: Floian-Dapingian
~478–466 Ma
TypeGeological formation
Thickness1,800 m (5,900 ft)
Lithology
PrimaryMudstone
OtherShale, sandstone, pyrite
Location
Coordinates21°00′S 65°00′W / 21.0°S 65.0°W / -21.0; -65.0
Approximate paleocoordinates45°18′S 129°06′W / 45.3°S 129.1°W / -45.3; -129.1
RegionTarija Department
CountryBolivia
Pircancha Formation is located in Bolivia
Pircancha Formation
Pircancha Formation
Pircancha Formation (Bolivia)

The Pircancha Formation is a Floian to Dapingian geologic formation of southern Bolivia. The green mudstones, shales and sandstones were deposited in a shallow to open marine environment.[1][2] The fossil Pircanchaspis rinconensis is named after the formation.

Fossil content

The formation has provided the following fossils:

See also

References

  1. ^ "Rincon", "Escuela Seccional de Puesto Grande" at Fossilworks.org
  2. ^ Pircancha Fm., Tarija and Chilcayo at Fossilworks.org
  3. ^ Aubrechtová, 2015

Bibliography

  • Aubrechtová, Martina (2015), "A revision of the Ordovician cephalopod Bactrites sandbergeri Barrande: systematic position and palaeobiogeography of Bactroceras", Geobios, 48 (3): 193–211, Bibcode:2015Geobi..48..193A, doi:10.1016/j.geobios.2015.03.002, retrieved 2019-03-03

Further reading

  • B.-D. Erdtmann, B. Weber, H.-P. Schultze and S. Egenhoff. 2000. A possible agnathan plate from the lower Arenig (Lower Ordovician) of South Bolivia. Journal of Vertebrate Paleontology 20(2):394-399
  • M. Toro and S. Fernandez. 1979. Los fósiles de la formación Pircancha aflorante en Chilcayo, Provincia Méndez - Depto. Tarija. Revista de la Academia Nacional de Ciencas de Bolivia 163-169

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