Houdan (Defrance collection) (Eocene of France)

Where: France (48.8° N, 1.6° E)

• Paleocoordinates: 41.2° N, 7.9° E (Wright 2013)

• 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. 1802. Premier mémoire. Mollusques testacées dont on trouve les dépouilles fossiles dans les environs de Paris. Annales du Muséum National d'Histoire Naturelle 1:308-312 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 184108: authorized by Matthew Clapham, entered by Matthew Clapham on 01.02.2017

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Patellogastropoda - Patellidae
Patella pennata n. sp.
Patella pennata n. sp. Lamarck 1802 limpet
 Sorbeoconcha - Ficidae
Pyrula subcarinata n. sp.1
Pyrula subcarinata n. sp.1 Lamarck 1803 fig shell
 Cerithioidea - Potamididae
"Cerithium tricarinatum" = Potamides (Potamidopsis) tricarinatus2
"Cerithium tricarinatum" = Potamides (Potamidopsis) tricarinatus2 Lamarck 1804 horn snail
 Cerithioidea - Cerithiidae
Cerithium conoideum n. sp.3, Cerithium involutum n. sp.3, Cerithium cinctum3
Cerithium conoideum n. sp.3 Lamarck 1804 cerith snail
Cerithium involutum n. sp.3 Lamarck 1804 cerith snail
Cerithium cinctum3 Bruguière 1792 cerith snail
 Cerithioidea - Thiaridae
Melania hordacea n. sp.4
Melania hordacea n. sp.4 Lamarck 1804 snail
 Neritoidea - Neritidae
Nerita tricarinata n. sp.5
Nerita tricarinata n. sp.5 Lamarck 1804 snail
1Lamarck 1803; 2Lamarck 1804; 3Lamarck 1804; 4Lamarck 1804; 5Lamarck 1804