Pissot Formation
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]
| Pissot Formation Stratigraphic range: Darriwilian-Sandbian (Dobrotivian) ~461–457.5 Ma | |
|---|---|
 Geologic map of the Armorican Massif | |
| Type | Formation |
| Lithology | |
| Primary | Siltstone |
| Location | |
| Coordinates | 49.0°N 1.0°W |
| Approximate paleocoordinates | 66.9°S 72.2°E |
| Region | Orne |
| Country |  France |
| Extent | Armorican Massif |
  Pissot Formation (France)  Pissot Formation (Normandy) | |
Fossil content
The following fossils have been reported from the formation:[1][2][3]
Trilobites
- Dalmanitina (Eodalmanitina) destombesi
- Morgatia hupei
- Dionide sp.
References
- Pissot Formation at Fossilworks.org
- Henry, 1980
- 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
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