The Reuchenette Formation is a

Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), 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 J ...

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 secondary ...

in Switzerland. It is Kimmeridgian in age and predominantly consists of well stratified limestone, with lithology variable both laterally and stratigraphically including wackestones, packstones and grainstones, as well as mudstone.

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 are among the fossils that have been recovered from the formation, including the Turiasaurian sauropod '' Amanzia greppini,'' alongside a theropod tooth belonging to

Ceratosauria Ceratosaurs are members of the clade Ceratosauria, a group of dinosaurs defined as all theropods sharing a more recent common ancestor with '' Ceratosaurus'' than with birds. The oldest known ceratosaur, '' Saltriovenator'', dates to the earlies ...

indet, originally assigned to '' Megalosaurus meriani.''

teleosaurid Teleosauridae is a family of extinct typically marine crocodylomorphs similar to the modern gharial that lived during the Jurassic period. Teleosaurids were thalattosuchians closely related to the fully aquatic metriorhynchoids, but were less ad ...

crocodyliformes are also known, including '' Sericodon,

Proexochokefalos ''Proexochokefalos'' (meaning "big head with big tuberosities") is an extinct genus of machimosaurid teleosauroid from the Jurassic of France Classification The type species, ''S. heberti'', was originally named "''Steneosaurus''" ''heberti'' ...

'' and '' Machimosaurus.'' The thalassochelydian turtle '' Solnhofia'' is known from the formation, as is the platychelyid turtle '' Platychelys.''

Footnotes

References

* Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. . Kimmeridgian Stage Jurassic System of Europe Geologic formations of Switzerland {{Europe-geologic-formation-stub

See also

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References