Pissot Formation Explained

Pissot Formation
Type:	Formation
Age:	Darriwilian-Sandbian (Dobrotivian) ~
Period:	Sandbian
Prilithology:	Siltstone
Region:	Orne
Coordinates:	49°N -1°W
Paleocoordinates:	-66.9°N 72.2°W
Extent:	Armorican Massif

The Pissot Formation is a geologic formation in the Armorican Massif of Normandy, northwestern France. It preserves fossils dating back to the Darriwilian to Sandbian (Dobrotivian in the regional stratigraphy) stages of the Ordovician period.^[1]

Fossil content

The following fossils have been reported from the formation:^{[1] [2] [3]}

Trilobites

• Dalmanitina (Eodalmanitina) destombesi
• Morgatia hupei
• Dionide sp.

See also

• List of fossiliferous stratigraphic units in France

References

Bibliography

• J.-L. Henry. 1980. Trilobites ordoviciens du Massif armoricain. Mémoires de la Société Géologique et Minéralogique de Bretagne 22:1-250
• J. L. Henry and M. Romano. 1978. Le genre Dionide Barrande, 1847 (Trilobite) dans l'Ordovicien du Massif Armoricain et du Portugal. Géobios 11(3):327-343

Notes and References

1. https://paleobiodb.org/classic/displayStrata?geological_group=&formation=Pissot&group_formation_member=Pissot Pissot Formation
2. Henry, 1980
3. Henry & Romano, 1978