Where: Calvados, France (49.1° N, 0.4° W: paleocoordinates 67.6° S, 64.9° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Grès de May Formation, Late/Upper Ordovician (458.4 - 443.8 Ma)

• formation-level stratigraphic resolution

Environment/lithology: offshore; lithified siltstone

Size class: macrofossils

Preservation: mold/impression

Primary reference: J.-L. Henry. 1980. Trilobites ordoviciens du Massif armoricain. Mémoires de la Société Géologique et Minéralogique de Bretagne 22:1-250 [D. Gendry/D. Gendry]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 174726: authorized by Damien Gendry, entered by Damien Gendry on 25.11.2015

Creative Commons license: CC BY (attribution)