Angers, Anjou, Armoricain Massif (Ordovician of France)

Where: Loire-Atlantique, France (47.5° N, 0.6° W: paleocoordinates 66.6° S, 78.9° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Grand-Auverné Formation, Llanvirn (466.0 - 460.9 Ma)

• Lower Llanvirn

• formation-level stratigraphic resolution

Environment/lithology: offshore; lithified, bioturbated, concretionary, pyritic, shelly/skeletal, sandy shale

• Dark shale with fine laminations, fossiliferous nodules, and occasional lenticles, bioturbation, sand, and pyrite

Size class: macrofossils

Preservation: cast, mold/impression

Primary reference: J. Pillet. 1992. Les Gastéropodes de l’Ordovicien moyen en Anjou. Bulletin de la Société des études scientifiques d’Anjour 7:1-60 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 185523: authorized by Pete Wagner, entered by Pete Wagner on 26.04.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

• Primarily gastropod and trilobite taxonomy and biostrat.
 Bellerophontida - Sinuitidae
Sinuites bilobatus de Sowerby and Murchison 1839 snail
Sinuites bilobatus bilobatus
 Bellerophontida - Tropidodiscidae
Peruniscus pusillus Perner 1903 snail
 Murchisoniina - Eotomariidae
Ptychonema desiderata Perner 1907 snail