Also known as Gres Armoricain Fm., Guichen, Ille-et-Vilaine

Where: Ille-et-Vilaine, France (48.0° N, 2.0° W: paleocoordinates 64.2° S, 83.3° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Superieur Member (Grès Armoricain Formation), Arenig (478.6 - 466.0 Ma)

• member-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified sandstone and lithified shale

Size class: macrofossils

Primary reference: C. Babin. 1966. Mollusques bivalves et céphalopodes du Paléozoïque Armoricain. Étudé systématique. Essai sur la phylogénie des bivalves. Esquisse paléoécologique. Imprimerie Commerciale et Administrative. Brest 1-471 [A. Miller/P. Novack-Gottshall/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 20860: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 11.06.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)