Английская Википедия:Grand-Auverné Formation

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Шаблон:Infobox rockunit The Grand Auverné Formation is a geologic formation in France. It preserves fossils dating back to the Darriwilian to Sandbian (Dobrotivian in the regional stratigraphy) stages of the Ordovician period.[1]

Description

The formation comprises dark shales with fine laminations, fossiliferous nodules, and occasional lenticles, bioturbation, sand and pyrite.[2]

Fossil content

The following fossils were reported from the formation:[2][3]

Trilobites

Шаблон:Div col

Шаблон:Div col end

Graptoloidea

See also

References

Шаблон:Reflist

Bibliography

  • J. Pillet. 1993. La faune des "Schistes a nodules" d'Angers (Llandeilo inferieur); I, Les trilobites. Memoire - Societe d'Etudes Scientifiques de l'Anjou 12