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.Grand Auverné Formation at Fossilworks.org
Description The formation comprises dark shales with fine laminations, fossiliferous nodules, and occasional lenticles, bioturbation, sand and pyrite.Schistes d'Angers, Grand Auverné Fm at Fossilworks.org
Fossil content The following fossils were reported from the formation:Pillet, 1993
Trilobites
Basilicus sp. Bumastus sp. Colpocoryphe sp. Dionide sp. Eccoptochile sp. Ectillaenus sp. Eodalmanitina sp. Neseuretus sp. Nobiliasaphus sp. Ogygites sp. Pateraspis sp. Placoparia sp. Prionocheilus sp. Salterocoryphe sp. Selenopeltis sp. Uralichas sp. Zeliszkella sp. ?Onnia sp.
Graptoloidea Didymograptus sp.
See also List of fossiliferous stratigraphic units in France
References
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