The Reuchenette Formation is a Jurassic geologic formation in Switzerland. It is Kimmeridgian in age,precisely dated through ammonites between 152.7 to 152 mya. It predominantly consists of well stratified limestone, with lithology variable both laterally and stratigraphically including wackestones, packstones and grainstones, as well as mudstone. 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. teleosaurid crocodyliformes are also known, including Sericodon, Proexochokefalos and Machimosaurus. The metriorhynchid thalatosuchians Torvoneustes and Dakosaurus. The hybodontid shark Asteracanthus. The thalassochelydian turtle Thalassemys and Solnhofia is known from the formation, as is the platychelyid turtles Platychelys, and the plesiochelyid turtle Plesiochelys.
Vertebrate fauna
Ray-finned fish +GenusSpeciesMaterialNotesImages"Lepidotes""L". laevisJaw FragmentGinglymodiL. sp.Four enameloid caps of the grinding toothGinglymodiaGyrodusG. "jurassicus"Lower jawPycnodontidaeG. sp.Two incisorsPycnodontidaeProscinetesP. sp. 1Enameloid cap of grinding tooth, six vomers and four prearticularsPycnodontidaeP. sp. 2Enameloid cap of grinding tooth, vomer and three prearticularsPycnodontidaePycnodontiformeIndeterminateEnameloid cap of grinding toothPycnodontidaeCaturusC. sp.Seven teethCaturidaeCallopterusC. sp.ToothCaturidaeIonoscopusI. sp.ToothCaturidaeBelonostomusB. sp.PredentaryAspidorhynchidae
Cartilaginous fish +GenusSpeciesMaterialNotesImagesAsteracanthusA. udulfensis149 teeth from different parts of the jawAcrodontine hybodontiforme with strongly ornamented dentition adapted for crushing hard-shelled prey, so far only known from the Reuchenette Formation"Hybodus""H". sp.101 teeth from different parts of the jawHybodontiforme with teeth similar to teeth from "Hybodus" lusitanicus, but they are smaller and slightly different in the bluntness of their main cusp"H". multicuspidatus19 mostly incomplete teethHybodontiforme whose teeth are very similar to those of Polyacrodus brevicostatus, however that genus is considered a nomen dubiumPlanohybodusP. sp.22 teethHybodontiforme that may represent a new speciescf. Meristodonoidescf. M. sp.22 teethHybodontiforme very similar to Meristodonoides, the teeth are too poorly preserved to properly confirm the inclusion in the genusPseudorhinaP. sp.One partial toothPseudorhina tooth displaying a unique morphology, however too fragmentary to nameP. acanthoderma69 teeth from different parts of the jawLarge angelshark known best by complete specimens hailing from the contemporary Nusplingen LimestoneP. alifera27 teeth from different parts of the jawMedium-sized angelshark known best by complete specimens hailing from the Solnhofen LimestoneProtospinaxP. sp.Three teethSqualomorph known from complete specimens hailing from the Solnhofen Limestone, the material from the Swiss Jura is too fragmentary to identify on a species levelHeterodontidaeIndeterminateOne fragment of a fin spine and 5 teethIndeterminate bullhead sharkHeterodontusH. semirugosusSix anterior teethBullhead shark?Paracestracion?P. sp.One fin spineHeterodontiforme tentatively referred to ParacestracionPalaeoscylliumP. cf. formosum15 teeth from different parts of the jawCatshark most similar to P. formosumCorysodonC. cirinensisFour teethThe systematic position of this genus is disputed, its also known from Cerin and SolnhofenRhinobatoideaIndeterminate25 teethTeeth that could either belong to Belemnobatis or SpathobathisBelemnobatisB. sismondae339 teeth from different parts of the jawAsterodermid known by more complete specimens from CerinB. morinicus55 teethAsterodermid known by more complete specimens from CerinSpathobatisS. bugesiacus157 teeth from different parts of the jawAsterodermid known by more complete specimens from CerinIschyodusI. quenstedti16 fin spines, 34 dental plates, 9 palatine plates and 25 mandibular platesLarge chimaera with a wide distribution in Late Jurassic EuropeLaffoniaL. helvetica1 egg capsuleEgg capsule similar to those of the modern short-nose chimaera
Reptiles
Testudinata +GenusSpeciesMaterialNotesImagesCraspedochelysC. pictetiC. jaccardiPlesiochelysP. bigleriPlatychelysP. oberndorferiPortlandemysP. gracilis SolnhofiaS. brachyrhynchaTropidemysT. langiiThalassemysT. bruntrutanaT. hugii"T." moseri
Crocodylomorpha +GenusSpeciesMaterialNotesImagesDakosaurusD. maximusMachimosaurusH. hugiiProexochokefalosP. cf. bouchardi SericodonS. jugleriTorvoneustesT. jurensis
Dinosauria +GenusSpeciesMaterialNotesImagesAmanziaA. greppiniCeratosauriaIndeterminate
Dinosauria trace fossils +GenusSpeciesMaterialNotesImagesBreviparopus-likeB. isp.Breviparopus-like trackBrontopodusB. isp.Sauropod track JurabrontesJ. curtedulensisGiant theropod tracks.MegalosauripusM. transjuranicusTheropod trackParabrontopodusP. isp.Sauropod track
Pterosauria +GenusSpeciesMaterialNotesImagesPterodactyloideaIndeterminateSecond wing phalanx (NMS 20'870)
Invertebrate Fauna
Cephalopoda +GenusSpeciesMaterialNotesImages
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. .