Anzaldo Formation

Anzaldo Formation
Stratigraphic range: Katian
~460–446 Ma
TypeGeological formation
Unit ofCochabamba Group
UnderliesSan Benito Formation
OverliesCapinota Formation
Lithology
PrimarySandstone
Location
Coordinates17°48′S 65°48′W / 17.8°S 65.8°W / -17.8; -65.8
Approximate paleocoordinates45°06′S 127°30′W / 45.1°S 127.5°W / -45.1; -127.5
RegionCochabamba Department
Country Bolivia
ExtentCordillera Oriental
Anzaldo Formation is located in Bolivia
Anzaldo Formation
Anzaldo Formation
Anzaldo Formation
Anzaldo Formation
Anzaldo Formation (Bolivia)

The Anzaldo Formation is a Katian geologic formation of central Bolivia. The formation belongs to the Cochabamba Group, overlies the Capinota Formation and is overlain by the San Benito Formation. The formation is famous for being where the Sacabambaspis, a jawless fish that has become a popular internet meme in recent years was discovered.[1]

Fossil content

The formation has provided the following fossils:

Fish

Pteraspidomorphi

Trilobites

Bivalves

Gastropods

Lingulida

See also

References

  1. ^ Anzaldo Formation at Fossilworks.org
  2. ^ a b Emig & Herrera, 2006
  3. ^ a b c Gagnier et al., 1996
  4. ^ Pradel et al., 2007
  5. ^ a b c d e f g Branisa, 1965

Bibliography

  • Pradel, A.; Sansom, I. J.; Gagnier, P.-Y.; Cespedes, R.; Janvier, P. (2007), "The tail of the Ordovician fish Scabambaspis", Biology Letters, 3 (1): 72–75, doi:10.1098/rsbl.2006.0557, PMC 2373808, PMID 17443969
  • Emig, C. C.; Herrera, Z. (2006), "Dignomia munsterii (Brachiopoda, Lingulata) from the Ordovician of Bolivia, with redescription of the genus", Geodiversitas, 28: 227–237
  • Gagnier, P. Y.; Blieck, A.; Emig, C. C.; Sempere, T.; Vachard, D.; Vanguestaine, M. (1996), "New paleontological and geological data on the Ordovician and Silurian of Bolivia", Journal of South American Earth Sciences, 9 (5): 329–347, Bibcode:1996JSAES...9..329G, doi:10.1016/S0895-9811(96)00018-1
  • Branisa, L (1965), "Los fósiles guias de Bolivia: I. Paleozoico", Boletín de Servicio Geologico de Bolivia la Paz, Bolivia, 6: 1–282