La Serre D/C boundary section, Tournaisian part (Devonian to of France)

Where: France (44.0° N, 4.5° E: paleocoordinates 19.9° S, 13.1° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Late/Upper Famennian to Late/Upper Famennian (364.7 - 353.8 Ma)

• Approx D/C boundary (praesulcata/sulcata boundary) between beds 88 and 89.

•JA: originally entered as Tournaisian, but latest Famennian to Hastarian based on zonal assignment; see Somerville 2008

• group of beds-level stratigraphic resolution

Environment/lithology: marine; limestone and shale

• Interpreted as shallow neritic facies.
• Famennian part of sequence at La Serre includes nodular limestone, oolite, calcilutite, shale. Tournaisian part consists of the same lithologies, as well as radiolarian chert (with phosphatic nodules) and marl with limestone nodules. Carbonate lithologies greatly predominate, but there are some fossils (esp. brachiopods) in the middle unit that is partly siliciclastic.

Size class: macrofossils

Primary reference: C. Brauckmann, I. Chlupac, and R. Feist. 1993. Trilobites at the Devonian-Carboniferous boundary. Annales de la Societe geologique de Belgique 115(2):507-518 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 38642: authorized by Michael Foote, entered by Michael Foote on 26.04.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Phacopida - Phacopidae
Phacops (Omegops) sp. Struve 1976 trilobite
 Proetida - Brachymetopidae
 Proetida - Proetidae
 Productida - Productellidae
 Productida - Productidae
 Productida - Monticuliferidae
 Spiriferinida - Syringothyrididae
 Spiriferida - Strophopleuridae
 Spiriferida - Spiriferidae
 Spiriferida - Brachythyrididae
Brachythyris sp.1 M'Coy 1844
 Rhynchonellida - Trigonirhynchiidae
 Rhynchonellida - Rhynchoporidae
Rhynchopora sp.1 King 1865
 Favositida - Favositidae
Sutherlandia sp.2 Cocke and Bowsher 1968 tabulate coral
 Stauriida - Cyathaxoniidae
Cyathaxonia (Cyathocarinia) sp.2 Michelin 1847 horn coral
 Stauriida - Cyathopsidae
 Stauriida - Plerophyllidae
"Ufimia "sp. 1"" = Ufimia2, "Ufimia "sp. 2"" = Ufimia2, "Ufimia "sp. 3"" = Ufimia2, "Rhopalolasma sp." = Ufimia2
"Ufimia "sp. 1"" = Ufimia2 Shtukenberg 1895 horn coral
"Ufimia "sp. 2"" = Ufimia2 Shtukenberg 1895 horn coral
"Ufimia "sp. 3"" = Ufimia2 Shtukenberg 1895 horn coral
"Rhopalolasma sp." = Ufimia2 Shtukenberg 1895 horn coral
 Stauriida - Polycoeliidae
? Sochkineophyllum sp.2 Grabau 1928 horn coral
 Heterocorallia - Heterophylliidae
Heterophyllia sp.2 McCoy 1849 horn coral