Le Quesnoy (reworked elasmobranchs) (Paleocene of France)

Where: Oise, France (49.3° N, 2.7° E: paleocoordinates 43.9° N, 0.3° E)

• coordinate based on nearby landmark

When: Argiles d'lignite du Soissonnais Formation, Thanetian (59.2 - 56.0 Ma)

• MP7

• group of beds-level stratigraphic resolution

Environment/lithology: fine channel fill; lenticular, gray sandstone

• Strata deposited at bottom of two channels cutting into underlying Thanetian marine green sands. The channels prograde toward the northeast and were discovered under Oise River Quaternary deposits.
• a succession of lenticular bodies showing two main facies: 1) clayey sands rich in frequently pyritised lignite, together with amber; 2) grey clayey sands with less lignite (1 to 12 % of the sediment), with continental vertebrate fauna. These facies, the rarity of mollusc shells and charophytes, probably due to decarbonatation and the presence of pyrrhotite (FeS4), reflect a hypoxic environment.

Size class: macrofossils

Reposited in the MNHN

Collection methods: bulk,

• Screen-washing noted by Gheerbrant et al. 2005

Primary reference: A. Nel, G. de Plöeg, J. Dejax, D. Duthiel, D. Franceschi, E. Gheerbrant, M. Godinot, S. Hervet, J.-J. Menier, M. Augé, G. Bignot, C. Cavagnetto, S. Duffaud, J. Gaudant, S. Hua, A. Jossang, F. Lapparent Broin, J.-P. Pozzi, J.-C. Paicheler, F. Beuchet, and J.-C. Rage. 1999. Un gisement sparnacien exceptionnel à plantes, arthropodes et vertébrés (Éocène basal, MP7): Le Quesnoy (Oise, France). Comptes Rendus de l'Académie des Sciences - Series IIA - Earth and Planetary Science 329(1):65-72 [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 68175: authorized by John Alroy, entered by John Alroy on 06.01.2007, edited by Patricia Holroyd

Creative Commons license: CC BY (attribution)

Taxonomic list

 Squatiniformes - Squatinidae
Squatina sp. Dumeril 1806 angel shark
 Plagiostomi - Squalidae
Otodus obliquus, "Megasqualus orpiensis" = Squalus orpiensis
Otodus obliquus Agassiz 1843 dogfish shark
"Megasqualus orpiensis" = Squalus orpiensis Winkler 1874 dogfish shark
 Myliobatiformes - Myliobatidae
Myliobatis sp. Cuvier 1816 eagle ray
 Lamniformes -
Isurolamna inflata mackerel shark
 Lamniformes - Odontaspididae
Striatolamia striata sand tiger shark
Palaeohypotodus rutoti Winkler 1878 sand tiger shark
 Carchariniformes - Triakidae
Pachygaleus lefevrei Daimeries 1891 hound shark
Palaeogaleus vincenti Daimeries 1889 hound shark
 Heterodontiformes - Heterodontidae
Heterodontus sp. de Blainville 1816 bullhead shark
 Euselachii - Mitsukurinidae
Anomotodon novus goblin shark
 Hexanchiformes - Hexanchidae
Notorynchus sp. Ayers 1855 cow shark