Gres Armoricain Fm., Loire-Atlantique (Ordovician of France)

Where: Loire-Atlantique, France (47.7° N, 1.4° E: paleocoordinates 62.6° S, 86.9° E)

• local area-level geographic resolution

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

• formation-level stratigraphic resolution

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

• Sandstone occasionally intercalated with 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 20861: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 11.06.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Bivalve taxonomy and biostratigraphy
Show authors, comments, and common names
Bivalvia
 Arcida - Parallelodontidae
Parallelodon sp.
Parallelodon sp. Meek and Worthen 1866 clam
 Nuculanida - Nuculanidae
"? Leda sp." = Nuculana
"? Leda sp." = Nuculana Link 1807 pointed nut clam