Reuchenette Formation Explained

Reuchenette Formation
Type:	Geological formation
Age:	Kimmeridgian,
Period:	Kimmeridgian
Prilithology:	Limestone
Otherlithology:	Mudstone
Region:	Europe
Subunits:	Membre de Chevenez, Membre de Courtedoux, Marne du Banné, Membre de Vabenau
Underlies:	Twannbach Formation
Overlies:	Formation de Court, Balsthal-Formation, Membre de Porrentruy, Verena-Member, Holzflue-Member, Formation de Courgenay
Thickness:	140 metres average, 160 m in type area.

The Reuchenette Formation is a Jurassic geologic formation 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.^[1] Dinosaur 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 indet, originally assigned to Megalosaurus meriani.^[2] teleosaurid crocodyliformes are also known, including Sericodon, Proexochokefalos and Machimosaurus.^[3] The metriorhynchid thalatosuchians Torvoneustes^[4] and Dakosaurus. The hybodontid shark Asteracanthus.^[5] The thalassochelydian turtle Thalassemys^[6] and Solnhofia is known from the formation,^[7] as is the platychelyid turtles Platychelys,^[8] and the plesiochelyid turtle Plesiochelys.^[9]

Vertebrate Fauna

Ray-finned fish

Lobe-finned fish

Cartilaginous fish

!Genus!Species!Material!Notes!Images

Asteracanthus

A. udulfensis

Reptiles

Testudinata

!Genus!Species!Material!Notes!Images

Craspedochelys	C. picteti
	C. jaccardi
Plesiochelys	P. bigleri
Platychelys	P. oberndorferi
Portlandemys	P. gracilis
Solnhofia	S. brachyrhyncha
Tropidemys	T. langii
Thalassemys	T. bruntrutana
	T. hugii
	"T." moseri

Crocodylomorpha

!Genus!Species!Material!Notes!Images

Dakosaurus	D. maximus
Machimosaurus	H. hugii
Proexochokefalos	P. cf. bouchardi
Sericodon	S. jugleri
Torvoneustes	T. jurensis

Dinosauria

!Genus!Species!Material!Notes!Images

Amanzia	A. greppini
Ceratosauria	Indeterminate

Pterosauria

!Genus!Species!Material!Notes!Images

Pterodactyloidea

Indeterminate

Second wing phalanx (NMS 20’870)

Invertebrate Fauna

Cephalopoda

See also

• List of dinosaur-bearing rock formations
  • List of stratigraphic units with indeterminate dinosaur fossils

References

• Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. .

Notes and References

1. Web site: Reuchenette Formation. strati.ch.
2. Schwarz. Daniela. Mannion. Philip D.. Wings. Oliver. Meyer. Christian A.. December 2020. Re-description of the sauropod dinosaur Amanzia ("Ornithopsis/Cetiosauriscus") greppini n. gen. and other vertebrate remains from the Kimmeridgian (Late Jurassic) Reuchenette Formation of Moutier, Switzerland. Swiss Journal of Geosciences. en. 113. 1. 2. 10.1186/s00015-020-00355-5. 1661-8726. free.
3. Johnson. Michela M.. Young. Mark T.. Brusatte. Stephen L.. 2020. The phylogenetics of Teleosauroidea (Crocodylomorpha, Thalattosuchia) and implications for their ecology and evolution. PeerJ. 8. e9808. 33083104. 10.7717/peerj.9808. 7548081 . free.
4. Girard . L. C. . De Sousa Oliveira . S. . Raselli . I. . Martin . J. E. . Anquetin . J. . 2023 . Description and phylogenetic relationships of a new species of Torvoneustes (Crocodylomorpha, Thalattosuchia) from the Kimmeridgian of Switzerland . PeerJ . 11 . e15512 . 10.7717/peerj.15512 . 37483966 . 10362849 . free .
5. Léa Leuzinger . Gilles Cuny . Evgeny Popov . Jean-Paul Billon-Bruyat . 2017 . A new chondrichthyan fauna from the Late Jurassic of the Swiss Jura (Kimmeridgian) dominated by hybodonts, chimaeroids and guitarfishes . Papers in Palaeontology . 3 . 4 . 471–511 . 10.1002/spp2.1085 . free . 2017PPal....3..471L . 11336/41081 . free .
6. Anquetin. J.. Püntener. C.. Joyce. W.G.. 2017. A Review of the Fossil Record of Turtles of the Clade Thalassochelydia. Bulletin of the Peabody Museum of Natural History. 58. 2. 317–369. 10.3374/014.058.0205. 31091127.
7. Anquetin. Jérémy. Püntener. Christian. 2020-11-12. A new species of the large-headed coastal marine turtle Solnhofia (Testudinata, Thalassochelydia) from the Late Jurassic of NW Switzerland. PeerJ. en. 8. e9931. 33240584 . 10.7717/peerj.9931. 7666818 . 2167-8359. free.
8. Sullivan. Patrick M.. Joyce. Walter G.. August 2017. The shell and pelvic anatomy of the Late Jurassic turtle Platychelys oberndorferi based on material from Solothurn, Switzerland. Swiss Journal of Palaeontology. en. 136. 2. 323–343. 10.1007/s13358-017-0136-7. 1664-2376.
9. Christian Püntener . Jérémy Anquetin . Jean-Paul Billon-Bruyat . 2017 . The comparative osteology of Plesiochelys bigleri n. sp., a new coastal marine turtle from the Late Jurassic of Porrentruy (Switzerland) . PeerJ . 5 . e3482 . 10.7717/peerj.3482 . 28674653 . 5493033 . free .