La Meignanne, Anjou, Armoricain Massif (Ordovician of France)

Where: Loire-Atlantique, France (47.5° N, 0.7° W: paleocoordinates 67.7° S, 75.4° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Schistes d'Angers Formation, Dobrotivian (459.0 - 457.9 Ma)

• 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: P. Cavet and J. Pillet. 1967. Sur l'existence du genre Ormathops Delo 1935 (Zeliszkellinae, trilobite) dans les schistes a nodules ordoviciens du synclinal d'Ancenis (Massif armoricain). Compte Rendu Sommaire des Seances de la Societe Geologique de France 7:300-301 [A. Miller/P. Novack-Gottshall/P. Novack-Gottshall]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 20889: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 12.06.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• Primarily gastropod and trilobite taxonomy and biostrat.
Show authors, comments, and common names
Gastropoda
 Bellerophontida - Sinuitidae
? Sinuites meignannensis n. sp.1
? Sinuites meignannensis n. sp.1 Pillet 1992 snail
 Bellerophontida - Tropidodiscidae
Peruniscus pusillus2
Peruniscus pusillus2 Perner 1903 snail
 Murchisoniina - Eotomariidae
Ptychonema desiderata2
Ptychonema desiderata2 Perner 1907 snail
 Euomphalina - Lesueurillidae
Lesueurilla aff. prima1
Lesueurilla aff. prima1 Perner 1903 snail
 Euomphalina - Holopeidae
Holopea laevis1
Trilobita
 Phacopida - Homalonotidae
Colpocoryphe sp.
Colpocoryphe sp. Novak and Perner 1918 trilobite
 Phacopida - Dalmanitidae
Ormathops sp.
Ormathops sp. Delo 1935 trilobite
 Phacopida - Pliomeridae
Placoparia sp.
Placoparia sp. Hawle and Corda 1847 trilobite
 Asaphida - Cyclopygidae
Pricyclopyge sp.
Pricyclopyge sp. Richter and Richter 1954 trilobite
1Pillet 1992; 2Wagner 2023