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Talacasto Formation

Geologic formation in Argentina From Wikipedia, the free encyclopedia

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The Talacasto Formation is a geological formation in Argentina, exposed primarily across San Juan Province, with an additional outcrop in La Rioja Province. It preserves fossils dating back to the Devonian period.

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Description

The Talacasto Formation is exposed in the Precordillera Basin of Argentina, with outcrops most widespread in San Juan Province, though an isolated exposure also exists at Sierra de las Minitas in La Rioja Province.[1][2] Along with the Punta Negra Formation, it makes up the Gualilán Group, which represent Devonian-aged deposits in the Argentine Precordillera.[3] The thickness of the Talacasto Formation varies across its extent; at the type locality of Quebrada de Talacasto in the south it is 300 m (980 ft) thick, while at the Loma de los Piojos section near the Jáchal River in the north it exceeds 1,000 m (3,300 ft) in thickness.[1]

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Fossil content

Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Bivalves

More information Bivalves reported from the Talacasto Formation, Genus ...

Brachiopods

More information Brachiopods reported from the Talacasto Formation, Genus ...

Cephalopods

More information Cephalopods reported from the Talacasto Formation, Genus ...

Corals

More information Corals reported from the Talacasto Formation, Genus ...

Echinoderms

More information Echinoderms reported from the Talacasto Formation, Genus ...

Hyoliths

More information Hyoliths reported from the Talacasto Formation, Genus ...

Ostracods

More information Ostracods reported from the Talacasto Formation, Genus ...

Sponges

More information Sponges reported from the Talacasto Formation, Genus ...

Trilobites

More information Trilobites reported from the Talacasto Formation, Genus ...
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References

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