Saint Nicolas de Pierrepont (Ordovician of France)

Where: Normandy, France (49.3° N, 1.6° W: paleocoordinates 67.4° S, 67.0° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Orthograptus truncatus graptolite zone, Sangsurière Formation, Berounian (457.9 - 449.8 Ma)

• Unnamed or unknown Upper Ordovician formation at Saint Nicolas de Pierrepont, France. PJW: Henry (1980) notes that this is the Sangsurière Formation.

• formation-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; lithified, concretionary, phosphatic, sandy shale

• Dark shale with occasional dark grey layers of cone-in-cone limestone and phosphate nodules and rare sandy lenses

Size class: macrofossils

Preservation: mold/impression

Primary reference: C. Babin and M. Robardet. 1972. Quelques paleotaxodontes (mollusques bivalves) de l’Ordovicien Supérieur de Saint Nicolas de Pierrepont (Normandie). Bulletin de la Société Géologique et Minéralogique de Bretagne, Série C 4:24-38 [A. Miller/P. Novack-Gottshall/P. Novack-Gottshall]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 20837: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 10.06.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bivalvia
 Nuculanida - Malletiidae
"Ctenodonta bilunata" = Myoplusia bilunata
"Ctenodonta bilunata" = Myoplusia bilunata Barrande 1881 clam
Ctenodonta cf. bilunata perdentata
 Solemyida - Ctenodontidae
Ctenodonta ? ponderata, Ctenodonta aff. librata
 Nuculida - Cardiolariidae
Deceptrix cf. ciae