| Klettgau Formation | |
|---|---|
| Stratigraphic range: Carnian-Rhaetian ~235–202 Ma PreꞒ Ꞓ O S D C P T J K Pg N | |
| Type | Geological formation |
| Unit of | Keuper |
| Sub-units | Ergolz, Gansingen, Berlingen, Seebi, Gruhalde & Belchen Members |
| Underlies | Staffelegg Formation |
| Overlies | Bänkerjoch Formation |
| Thickness | 30–60 m (98–197 ft) locally up to 75 m (246 ft) |
| Lithology | |
| Primary | Mudstone, marl |
| Other | Dolomite, sandstone |
| Location | |
| Coordinates | 47°42′N 8°30′E / 47.7°N 8.5°E / 47.7; 8.5 |
| Approximate paleocoordinates | 35°12′N 10°42′E / 35.2°N 10.7°E / 35.2; 10.7 |
| Region | Aargau, Schaffhausen |
| Country | Switzerland |
| Type section | |
| Named for | Klettgau |
| Named by | Jordan et al. |
| Location | Seebi quarry |
| Year defined | 2016 |
  Klettgau Formation (Switzerland) | |
The Klettgau Formation is a geological formation in Switzerland. It is Late Triassic in age, covering most of the mid to late Norian, the Carnian, and into the Rhaetian, spanning a period of 26-30 million years.
Description
The primary depositional environment was that of a playa with marine and fluvial intercalations. The lithology is quite variable consisting primarily of fine grained rocks typically claystones and dolocretes, often with sandstone or carbonatic fluvial channel fills.
Fossil content
Dinosaur fossils are known from the formation, including those of Plateosaurus, Notatesseraeraptor frickensis and Schleitheimia
The following other fossils were found in the formation:
- Prozostrodontia
- Hallautherium schalchi
- Helvetiodon schutzi
- ?Thomasia sp.
- cf. Thomasia sp.
- Thomasia antiqua
- T. moorei
- Tricuspes cf. tuebingensis
- ?Haramiyidae indet.
- Morganucodon peyeri
- Morganucodon sp.
- Reptiles
- Deltadectes elvetica
- Termatosaurus albertii
- Proganochelys quenstedtii
- Paleollanosaurus sp.
- ?Variodens sp.
- cf. Diphydontosaurus sp.
- cf. Eudimorphodon sp.
- Archosauriformes indet.
- Nothosauridae indet.
- Pterosauria indet.
- Sphenodontia indet.
- Theropoda indet.
- Amphibians
- Fish
- Invertebrates
References
- ^ Klettgau Formation at Fossilworks.org
- Jordan et al., 2016
- Zahner & Brinkmann, 2019
- Rauhut et al., 2020
- ^ Tatarinov, 1985
- ^ Clemens, 1980
- ^ Whiteside et al., 2017
- Scheyer, Torsten M.; Klein, Nicole; Evers, Serjoscha W.; Mautner, Anna-Katharina; Pabst, Ben (December 2022). "First evidence of Proganochelys quenstedtii (Testudinata) from the Plateosaurus bonebeds (Norian, Late Triassic) of Frick, Canton Aargau, Switzerland". Swiss Journal of Palaeontology. 141 (1): 17. Bibcode:2022SwJP..141...17S. doi:10.1186/s13358-022-00260-4. ISSN 1664-2376. PMC 9613585. PMID 36317153.
- Butler et al., 2006
- Carrano, 2020
- ^ Schalch & Peyer, 1919
- Peyer, 1956
Bibliography
- Carrano, M. T (2020), Taxonomic opinions on the Dinosauria, unpublished
- Rauhut, Oliver W. M.; Holwerda, Femke M.; Furrer, Heinz (2020), "A derived sauropodiform dinosaur and other sauropodomorph material from the Late Triassic of Canton Schaffhausen, Switzerland", Swiss Journal of Geosciences, 113 (1): 8, doi:10.1186/s00015-020-00360-8, ISSN 1661-8726
- Zahner, M.; Brinkmann, W. (2019), "A Triassic averostran-line theropod from Switzerland and the early evolution of dinosaurs", Nature Ecology & Evolution, 3 (8): 1146–1152, Bibcode:2019NatEE...3.1146Z, doi:10.1038/s41559-019-0941-z, ISSN 2397-334X, PMC 6669044, PMID 31285577
- Whiteside, D. I.; Duffin, C. J.; Furrer, H. (2017), "The Late Triassic lepidosaur fauna from Hallau, North-Eastern Switzerland, and a new 'basal' rhynchocephalian Deltadectes elvetica gen. et sp. nov.", Neues Jahrbuch für Geologie und Paläontologie, 285: 53–74, doi:10.1127/njgpa/2017/0669
- Jordan, Peter; Pietsch, Johannes S.; Bläsi, Hansruedi; Furrer, Heinz; Kündig, Nicole; Looser, Nathan; Wetzel, Andreas; Deplazes, Gaudenz (2016), "The middle to late Triassic Bänkerjoch and Klettgau formations of northern Switzerland", Swiss Journal of Geosciences, 109 (2): 257–284, doi:10.1007/s00015-016-0218-3, ISSN 1661-8726
- Butler, R. J.; Porro, L. B.; Heckert, A. B. (2006), "A supposed heterodontosaurid tooth from the Rhaetian of Switzerland and a reassessment of the European Late Triassic record of Ornithischia (Dinosauria)", Neues Jahrbuch für Geologie und Paläontologie - Monatshefte, 2006 (10): 613–633, doi:10.1127/njgpm/2006/2006/613
- Tatarinov, L. P (1985), "New data on a collection of tetrapod teeth from the Rhaetian of Hallau (Switzerland)", Paleontological Journal, 1: 138–140
- Clemens, W. A (1980), "Rhaeto-Liassic mammals from Switzerland and West Germany", Zitteliana, 5: 51–92
- Peyer, B (1956), "Über Zähne von Haramiyiden, von Triconodonten und von wahrscheinlich synapsiden Reptilien aus dem Rhät von Hallau, Kt. Schaffhausen, Schweiz - On the teeth of haramiyids, triconodonts, and probable synapsid reptiles from the Rhaetic of Hallau, Kanton Schaffhausen, Switzerland", Schweizerische Paläontologische Abhandlungen, 72: 1–72
- Schalch, F.; Peyer, B. (1919), "Über ein neues Rhätvorkommen im Keuper des Donau-Rheinzuges - On a new occurrence of the Rhaetian in the Keuper of the Danube-Rhine valleys", Mitteilungen der Badischen Geologischen Landesanstalt, 8: 263–315