Assemblage 3 (Devonian of France)

Also known as Lower part of the Couderousse Member of the Blacourt Formation

Where: Boulonnais, France (46.0° N, 2.0° E: paleocoordinates 32.7° S, 26.7° E)

• coordinate estimated from map

When: Couderousse Member (Blacourt Formation), Givetian (387.7 - 382.7 Ma)

• 5-6 meters thick

• member-level stratigraphic resolution

Environment/lithology: offshore; micaceous, pyritic, gray, calcareous limestone

• The sediments are represented by indurated bioclastic crinoidal pyrite-rich limestone with gray calcareous micaceous claystone. The microfacies consists of packstone-wackestone, reworked biomicrite and natural bioclsats of different sizes.

Primary reference: D. Brice. 2003. Brachiopod assemblages in the Devonian of Ferques (Boulonnais, France). Relations to palaeoenvironments and global eustatic curves. Bulletin of Geosciences 78(4):405-417 [L. Ivany/C. Story/C. Story]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 65778: authorized by Linda Ivany, entered by Cristina Story on 25.09.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Dagnachometes cf. supragibbosus
Rhynchonellata
 Rhynchonellida - Trigonirhynchiidae
Trigonirhynchiidae indet.
Trigonirhynchiidae indet. McLaren 1965
originally entered as "Trigonirhynchiidae sp."
 Terebratulida - Stringocephalidae
Stringocephalus sp., Stringocephalus burtini
Stringocephalus burtini Defrance 1825
 Spiriferida - Reticulariidae
Undispirifer undiferus, Undispirifer ? grandis
 Spiriferida - Cyrtospiriferidae
Cyrtospirifer verneuiliformis
 Orthida - Rhipidomellidae
Aulacella sp.
 Atrypida - Atrypidae
Desquamatia sola, Spinatrypa sp.
Spinatrypa sp. Stainbrook 1951
 Spiriferinida - Cyrtinidae
Cyrtina sp.
Cyrtina sp. Davidson 1858
 Athyridida - Athyrididae
Athyris sp.