Ferques Fm., Fiennes Mbr., vicinity of Ferques, Bas-Boulonnais (Devonian of France)

Where: France (50.8° N, 1.8° E: paleocoordinates 22.1° S, 3.5° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Fiennes Member (Ferques Formation), Frasnian (382.7 - 372.2 Ma)

• middle asymmetricus conodont zone

• member-level stratigraphic resolution

Environment/lithology: marine; brown dolomite and dolomitic sandstone

• "The Blacourt Formation is a compact, massive bedded, black fossiliferous marine limestone, with argillaceous layers and some small reefs in the Griset Member. The lower [Cambreseque] and upper [Patures] member of the Beaullieu Formation are mainly terrigenous ["shale" mentioned in figure caption], except for its lowest beds, the so-called Cedule Limestone. The middle [Noces] member consists of dolomite lenses, passing upward into shales, and to a reef build-up capped by fossiliferous limestones. The base of the lower [Fiennes] member of the succeeding Ferques Formation is a biostromal dolomite overlain by yellow, then brownis-dark dolomite and dolomitic sandstones. These are overlain by the fully marine fossiliferous Ferques Limestone. The lower part of the [second-from-bottom] Bois Member and the upper part of the [third-from-bottom] Parisienne Member are biostromal. In the upper [Gris] member, sediments are more argillaceous..."

Primary reference: P. Morzadec, D. Brice, C. Cygan, R. Feist, C. Majeste-Menjoulas, F. Paris, and P. R. Racheboeuf. 2000. The Devonian of France: a tentative tie with the GSSP of the Devonian stages. Courier Forschungs-Institut Senckenberg 225:115-129 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 38688: authorized by Michael Foote, entered by Michael Foote on 28.04.2004, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

 Bellerophontida - Bellerophontidae
Aglaoglypta labyrinthodes5 Whidborne 1896 snail
USNM 137403; "Bellerophon" is from the sandstone member according to old papers.
 Spiriferinida - Cyrtinidae
 Spiriferida - Mucrospiriferidae
 Auloporida - Thecostegitidae
Thecostegites bouchardi3 tabulate coral
 Auloporida - Auloporidae
Aulopora cf. stasinskae3 tabulate coral
 Stauriida - Metriophyllidae
 Stauriida - Kyphophyllidae
Tabulophyllum vorticis n. sp.4 horn coral
 Stauriida - Disphyllidae
Hexagonaria mireillae n. sp.4 horn coral
 Stromatoporida - Syringostromellidae
 Syringostromatida - Stachyoditidae
 Stromatoporellida - Stromatoporellidae