Ségrie, Grès armoricain Fm (Ordovician of France)

Where: France (48.2° N, 0.0° E: paleocoordinates 62.4° S, 86.2° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Grès Armoricain Formation, Floian (477.7 - 470.0 Ma)

• Arenig

Environment/lithology: shoreface; poorly lithified, sandy, cherty/siliceous siliciclastic sediments

Size classes: macrofossils, mesofossils

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 174543: authorized by Damien Gendry, entered by Damien Gendry on 15.11.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Asaphida - Asaphidae
Ogyginus armoricanus Tromelin and Lebesconte 1876 trilobite
 Phacopida - Homalonotidae
Platycoryphe dangeardi Henry 1971 trilobite
Platycoryphe heberti Lebesconte 1887 trilobite