Beaulieu Fm., Cambresque 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: Cambreseque Member (Beaulieu Formation), Frasnian (382.7 - 372.2 Ma)

• lower asymmetricus conodont zone. "Exact base of the Frasnian cannot be [precisely determined] because there is a fault at the base of the Beaulieu Shales"

• member-level stratigraphic resolution

Environment/lithology: marine; shale and limestone

• "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..."

Size class: macrofossils

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 38685: authorized by Michael Foote, entered by Michael Foote on 28.04.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Crinoidea
  -
Crinoidea indet.4
Crinoidea indet.4 Miller 1821 Sea lily
Le Menn has given formal names to several columnal taxa.
 Monobathrida - Melocrinitidae
Melocrinites subglobosus4
Strophomenata
 Productida - Productellidae
Productella subaculeata3
Productella subaculeata3 Murchison 1840
 Strophomenida - Douvillinidae
Douvillina cedulae3
 Strophomenida - Chonetidae
Rhyssochonetes douvillei3
Rhynchonellata
 Atrypida - Atrypidae
Spinatrypa "sp. G"3
Spinatrypa "sp. G"3 Stainbrook 1951
 Spiriferida - Mucrospiriferidae
Apousiella dorlodoti3
 Spiriferida - Cyrtospiriferidae
Eodmitria supradisjuncta3, ? Uchtospirifer sp.3, Cyrtospirifer syringothyriformis3, Cyrtospirifer verneuili3
 Orthida - Schizophoriidae
Schizophoria striatula3
Schizophoria striatula3 von Schlotheim 1813
 Spiriferinida - Cyrtinidae
Cyrtina douvillei3
 Rhynchonellida - Trigonirhynchiidae
Ripidiorhynchus barroisi3, Ripidiorhynchus belliloci3
 Athyridida - Athyrididae
Athyris oehlerti3
Stenolaemata
 Trepostomida - Amplexoporidae
Petalotrypa brevicamerata n. sp.2
 Trepostomida - Atactotoechidae
Leptotrypella radiata n. sp.2
 Cystoporata - Fistuliporidae
Fistuliramus pachycystis n. sp.2
 Trepostomata - Heterotrypidae
? Leptotrypa cassa n. sp.2
Bivalvia
 Cardiidia - Grammysiidae
? Prothyris "sp. 2"1
? Prothyris "sp. 2"1 Meek 1871 clam
 Lucinida - Mactromyidae
Paracyclas sp.1, Paracyclas proavia1
Paracyclas sp.1 Hall 1843 clam
Paracyclas proavia1 Goldfuss 1834 clam
 Ostreida - Pterineidae
Ptychopteria "sp. 1"1
Ptychopteria "sp. 1"1 Hall 1883 oyster
Anthozoa
 Stauriida - Disphyllidae
Disphyllum pashiense6
 Auloporida - Aulocystidae
"Plexituba" briceae5
"Plexituba" briceae5 tabulate coral
1Babin 1988; 2Bigey 1988; 3Brice 1988; 4Le Menn 1988; 5Mistiaen 1988; 6Rohart 1988