Kerdreolet Formation trilobites, Rade de Brest, Massif Armoricain (Devonian of France)

Where: Alsace, France (48.4° N, 4.5° W: paleocoordinates 38.1° S, 30.1° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Kerdreolet Formation, Late/Upper Emsian (402.5 - 391.9 Ma)

• upper Emsian

• formation-level stratigraphic resolution

Environment/lithology: marine; cherty/siliceous shale and limestone

• Lithotypes from diagrammatic section: "schistes a nodules siliceux" [also showing symbol that seems to denote limestone nodules]; "calcaires"

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 40068: authorized by Michael Foote, entered by Michael Foote on 16.06.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Trilobites only.
 Corynexochida - Styginidae
 Phacopida - Acastidae
 Phacopida - Phacopidae
Phacops sp. Emmrich 1839 trilobite
 Proetida - Aulacopleuridae
 Proetida - Tropidocoryphidae
Cornuproetus (Lepidoproetus) "sp. 1" Richter and Richter 1919 trilobite
Cornuproetus (Lepidoproetus) "sp. 2" Richter and Richter 1919 trilobite
 Proetida - Proetidae
Proetus (Gerastos) ex gr. cuvieri Steininger 1831 trilobite
 Lichida - Odontopleuridae