Bélus (=Marcon) (Oligocene of France)

Where: Landes, France (43.6° N, 1.1° W: paleocoordinates 43.4° N, 3.9° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: NP24, NP25 foram zone, Chattian (28.1 - 23.0 Ma)

• On the basis of the calcareous nannoplankton these deposits are referred to the zones NP24 and NP25 that correspond with the Chattian (Cahuzac et al. 1995.

• group of beds-level stratigraphic resolution

Environment/lithology: estuary or bay; lithified, gray, yellow marl

• The localities of Peyrère, Bélus and St-Étienned’Orthe are situated in the area that is considered to be originally a submarine canyon. At the head of the paleocanyon (Peyrère,Bélus) the infralittoral to circalittoral facies with dominance of marls occur. Circalittoral facies.
• marls. Cahuzac & Janssen give: Chattian, grey to yellowish marl

Size classes: macrofossils, mesofossils

Reposited in the MNHN

• Repository: University of Bourdeaux-1

Primary reference: M. A. Bitner, P. Lozouet, and B. Cahuzac. 2013. Upper Oligocene (Chattian) brachiopod fauna from the Aquitaine Basin, southwestern France and its paleoenviornmental implications. Geodiversitas 35(3):579-606 [M. Clapham/M. Manojlovic]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 152694: authorized by Matthew Clapham, entered by Marko Manojlovic on 30.11.2013, edited by Mihaela Krause

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Rhynchonellata
 Terebratulida - Megathyrididae
Argyrotheca bitnerae Dulai 2011
5 specimens, 3 ventral and 1 dorsal valve
Joania cordata Risso 1826
4 specimens, 3 ventral and 4 dorsal valves
Joania peyrerensis Bitner et al. 2013
3 specimens and 1 dorsal valve
Megathiris detruncata Gmelin 1791
10 specimens, 3 ventral and 5 dorsal valves
 Terebratulida - Cancellothyrididae
Terebratulina retusa Linnaeus 1758
5 specimens, 2 ventral and one dorsal valve
 Thecideida - Thecideidae
Lacazella mediterranea Risso 1826
1 specimen and a ventral and dorsal valve
Gastropoda
 Thecosomata - Cavoliniidae
Styliola subula Quoy and Gaimard 1827 snail
Creseis "sp. 2" Rang 1828 snail
Creseis spina Reuss 1867 snail
 Thecosomata - Limacinidae
Heliconoides hospes Rolle 1861 snail
Heliconoides linneensis Janssen 2008 snail
 Cavolinioidea - Cuvierinidae