Grignon (Brongniart collection) (Eocene of France)

Where: France (48.8° N, 1.9° E: paleocoordinates 45.7° N, 1.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: NP15 nannofossil zone, Lutetian (47.8 - 41.3 Ma)

• The sediments from the "Falunière de Grignon" are correlated of the Middle Lutetian, according to the identification of biozone NP15 (Aubry 1985). They belong to the regional Zone III and the base of Zone IV of Abrard (1925) and correspond to parasequences A6-A10 of Gely (1996).

• group of beds-level stratigraphic resolution

Environment/lithology: open shallow subtidal; unlithified, calcareous sandstone and unlithified, glauconitic sandstone

Size class: macrofossils

Preservation: original aragonite

Collected by R. Coquebert; reposited in the MNHN

• Repository: Brongniart collection (now at MNHN Paris)

Primary reference: R. Coquebert and A. Brongniart. 1793. Extrait d'un mémoire sur la formation de la coquille de Strombus fissurella, et sur deux espèces analogues à celle-ci. Bulletin des Sciences, Société Philomatique de Paris 1:55-56 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 184152: authorized by Matthew Clapham, entered by Matthew Clapham on 04.02.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Stromboidea - Strombidae
"Strombus fissurella" = Rimella fissurella, "Strombus canalis n. sp." = Rimella canalis
"Strombus fissurella" = Rimella fissurella Linnaeus 1767 true conch
"Strombus canalis n. sp." = Rimella canalis Coquebert and Brongniart 1793 true conch