Argiles d'Octeville

The Argiles d'Octeville (meaning Octeville Clay) is a geological formation in Normandy, France. It dates back to the Kimmeridgian stage of the Late Jurassic.[1] It is equivalent to the Kimmeridge Clay in England[2] and predominantly consists of claystone, with some limestone.[3] It is well exposed in cliff section at Cap de la Hève

Argiles d'Octeville Stratigraphic range: Kimmeridgian PreꞒ Ꞓ O S D C P T J K Pg N
Argiles d'Octeville exposed near the base of cliffs near Octeville-sur-Mer, with Chalk in the upper exposure
Type	Geological formation
Sub-units	Argiles du Croquet inférieures, Argiles du Croquet supérieures, Argiles d'Ecqueville inférieures, Argiles d'Ecqueville médianes, Argiles d'Ecqueville supérieures
Underlies	Unconformity with Aptian sands
Overlies	Marnes de Bleville
Thickness	34 metres
Lithology
Primary	Claystone
Other	Limestone
Location
Region	Normandy
Country	France
Type section
Named for	Octeville-sur-Mer

Vertebrate fauna

Reptiles of the Argiles d'Octeville
Taxa	Species	Presence	Material	Notes	Images
Dacentrurus[1]	Indeterminate[4]	Cliffs of Octeville, Cap de La Hève, Normandy	"Seven cervical vertebrae, seven dorsal vertebrae, a sacrum with seven fused centra and sacral ribs, the left ilium, the posterior ends of one pubis and one ischium, the first caudal vertebra and one femur"	Dacentrurine Stegosaur. Excavated in 1898.[5] First described as "Omosaurus lennieri" by Nopcsa in 1911[6] Remains destroyed by WW2 bombing in 1944.	Dacentrurus
Normannognathus[7]	N. wellnhoferi	Cliffs of Octeville, Cap de La Hève, Normandy	Left anterior portion of the skull and associated lower jaws	Pterosaur, indeterminate Monofenestratan.
Sauropoda[1]	Indeterminate	Geographically located in Departement de la Seine-Maritime, France.[1]		"(=Pelorosaurus sp.)"[1]

See also

• List of dinosaur-bearing rock formations

References

1. Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Jurassic, Europe)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 545–549. ISBN 0-520-24209-2.
2. Gallois, R. W. 2005 Kimmeridgian of the Normandy coast, C. R. L’Acad. Sci., Vol. 337, 347-255.
3. M. Saint-Germès, F. Baudin, J.-F. Deconinck, P. Hantzpergue, Y. Samson. 1996. Sédimentologie de la matière organique et des argiles du Kimméridgien de Normandie (région du Havre) (Sedimentology of organic matter and day mineralogy in the Kimmeridgian of Normandy (Le Havre area))
4. Maidment, Susannah C. R.; Norman, David B.; Barrett, Paul M.; Upchurch, Paul (January 2008). "Systematics and phylogeny of Stegosauria (Dinosauria: Ornithischia)". Journal of Systematic Palaeontology. 6 (4): 367–407. doi:10.1017/S1477201908002459. ISSN 1477-2019.
5. Lepage Y., Buffetaut E. & Lepage G., 2018. The first photographs of a dinosaur excavation in Europe: Emile Savalle and the stegosaur from Octeville (Normandy, 1898). Colligo, 1(1). https://perma.cc/EAH6-7STS
6. Nopcsa F., 1911. Omosaurus lennieri. Un nouveau dinosaurien au Cap de la Hève. Bulletin de la Société géologique de Normandie, 30 (1910) : 23-42.
7. Buffetaut, E., Lepage, J.-J., and Lepage, G. (1998). A new pterodactyloid pterosaur from the Kimmeridgian of the Cap de la Hève (Normandy, France). Geological Magazine 135(5):719–722.