Pissot Formation

Pissot Formation
Stratigraphic range: Darriwilian-Sandbian (Dobrotivian) ~461–457.5  Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Geologic map of the Armorican Massif
Type	Formation
Lithology
Primary	Siltstone
Location
Coordinates	49°00′N1°00′W / 49.0°N 1.0°W / 49.0; -1.0
Approximate paleocoordinates	66°54′S72°12′E / 66.9°S 72.2°E / -66.9; 72.2
Region	Orne
Country	France
Extent	Armorican Massif
Pissot Formation (France) Show map of France Pissot Formation (Normandy) Show map of Normandy

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

1. Pissot Formation at Fossilworks.org
2. Henry, 1980
3. Henry & Romano, 1978

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