The Marnes a ''Belemnopsis latesulcatus'' Formation is a
Jurassic
The Jurassic ( ) is a geologic period and stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The Jurassic constitutes the middle period of ...
geologic
formation
Formation may refer to:
Linguistics
* Back-formation, the process of creating a new lexeme by removing or affixes
* Word formation, the creation of a new word by adding affixes
Mathematics and science
* Cave formation or speleothem, a secondar ...
in
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan area ...
. It is so named because it exists within the ''
Belemnopsis latesulcatus''
biostratigraphic zone. It predominantly consists of
bioturbated variegated
marl and
lenticular concetionary wackestone
Under the Dunham classification (Dunham, 1962Dunham, R.J., 1962. Classification of carbonate rocks according to depositional texture. In: W.E. Ham (Ed.), Classification of Carbonate Rocks. American Association of Petroleum Geologists Memoir. Amer ...
Vertebrate fauna
Dinosaur
Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the evolution of dinosaurs is t ...
remains diagnostic to the
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...
level are among the fossils that have been recovered from the formation.
[Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.] A referred specimen of ''
Loricatosaurus priscus'' (MHBR 001) was found in this unit and is the source of the name ''
Lexovisaurus
''Lexovisaurus'' is a genus of stegosaur from mid-to-Late Jurassic Europe, 165.7-164.7 mya. Fossils of limb bones and armor fragments have been found in middle to late Jurassic-aged strata of England.
Discovery and taxonomy
In the early ...
'' when Hoffstetter (1957) coined that genus for the dubious species ''O. durobrivensis'' (to which he referred MNBR 001), because the area in which MHBR 001 was found used to be inhabited by the
Lexovii
The Lexovii (Gaulish: *''Lexsouioi'', 'the leaning, lame'), were a Gallic tribe dwelling immediately west of the mouth of the Seine, around present-day Lisieux, during the Iron Age and the Roman period.
Name
They are mentioned as ''Lexovii'' (v ...
, a tribe of the ancient Gauls.
[Hoffstetter, R., 1957, "Quelques observations sur les Stégosaurinés", Bulletin du Muséum National d’Histoire Naturelle, Paris, 2nde série 29: 537-547 ]
See also
*
List of dinosaur-bearing rock formations
This list of dinosaur-bearing rock formations is a list of geologic formations in which dinosaur fossils have been documented.
Containing body fossils
* List of stratigraphic units with dinosaur body fossils
** List of stratigraphic units with ...
**
List of stratigraphic units with few dinosaur genera
This list of stratigraphic units with few non-avian dinosaur genera includes Mesozoic stratigraphic units of formation rank or higher that have produced dinosaur body fossils which have been referred to at most five genera. Since taxonomy frequent ...
Footnotes
References
* Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. .
Jurassic System of Europe
Jurassic France
Callovian Stage
{{France-geologic-formation-stub