Also known as Kersadiou Formation trilobites, Rade de Brest, Massif Armoricain

Where: Alsace, France (48.3° N, 4.5° W: paleocoordinates 31.4° S, 21.1° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: lower Polygnathus varcus conodont zone, Kersadiou Formation, Givetian (387.7 - 382.7 Ma)

• PJW: Originally given as Eifelian; however, Botquelen & Racheboeuf 2008 put Kersadiou in the lower Polygnathus varcus zone. They also indicate that the specific that generated the list is Kersadiou, so this is not a case where they go to Eifelian-aged rocks from this region (i.e., the underlying Quelern Formation). Kersadiou overlies the Quelern and underlies the Tibidy.

• formation-level stratigraphic resolution

Environment/lithology: marine; cherty/siliceous shale

Size class: macrofossils

Primary reference: P. Morzadec. 1983. Trilobites du Devonien (Emsien-Famennien) de la Rade de Brest (Massif Armoricain). Palaeontographica Abteilung A 181(4-6):103-184 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 40072: authorized by Michael Foote, entered by Michael Foote on 16.06.2004

Creative Commons license: CC BY (attribution)