Pontchartrain (Defrance collection) (Eocene of France)

Where: France (48.8° N, 1.9° E: paleocoordinates 45.6° N, 1.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Lutetian (47.8 - 41.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: carbonate

Size class: macrofossils

Reposited in the MNHN

• Repository: Defrance collection (some of which is now at Musée de Normandie, Caen, or at MNHN Paris)

Primary reference: J. B. Lamarck. 1804. Suite des mémoires sur les fossiles des environs de Paris. Annales du Muséum National d'Histoire Naturelle 3:343-352 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 184143: authorized by Matthew Clapham, entered by Matthew Clapham on 04.02.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Heterostropha - Ringiculidae
Auricula miliola1 Lamarck 1804 snail
 Cerithioidea - Cerithiidae
Cerithium trochleare Lamarck 1804 cerith snail
Cerithium asperellum Lamarck 1804 cerith snail
 Cerithioidea - Thiaridae
"Melania corrugata n. sp." = Bayania semidecussata4, Melania dubia n. sp.4
"Melania corrugata n. sp." = Bayania semidecussata4 Lamarck 1804 snail
Melania dubia n. sp.4 Lamarck 1804 snail
 Cerithioidea - Batillariidae
"Cerithium plicatum" = Granulolabium plicatum
"Cerithium plicatum" = Granulolabium plicatum Bruguiére 1792 snail
 Sorbeoconcha - Naticidae
Ampullaria crassatina n. sp.5 Lamarck 1804 moon snail
 Sorbeoconcha - Rissoidae
"Bulimus turbinatus n. sp." = Turboella turbinata3
"Bulimus turbinatus n. sp." = Turboella turbinata3 Lamarck 1804 snail
 Trochoidea - Trochidae
"Trochus subcarinatus" = Jujubinus subcarinatus2
"Trochus subcarinatus" = Jujubinus subcarinatus2 Lamarck 1804 top snail