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Klettgau Formation 
Summary
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.[1]
| Klettgau Formation | |
|---|---|
| Stratigraphic range: Carnian-Rhaetian ~ | |
| 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 |
| Approximate paleocoordinates | 35°12′N 10°42′E / 35.2°N 10.7°E |
| Region | Aargau, Schaffhausen |
| Country | Switzerland |
| Type section | |
| Named for | Klettgau |
| Named by | Jordan et al. |
| Location | Seebi quarry |
| Year defined | 2016 |
  Klettgau Formation (Switzerland) | |
Description edit
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.[2]
Fossil content edit
Dinosaur fossils are known from the formation, including those of Plateosaurus, Notatesseraeraptor frickensis and Schleitheimia[3][4]
The following other fossils were found in the formation:[1]
- Prozostrodontia
- Hallautherium schalchi[5]
- Helvetiodon schutzi[5]
- ?Thomasia sp.[6]
- cf. Thomasia sp.[6]
- Thomasia antiqua[6]
- T. moorei[6]
- Tricuspes cf. tuebingensis[6]
- ?Haramiyidae indet.[6]
- Morganucodon peyeri
- Morganucodon sp.
- Reptiles
- Deltadectes elvetica[7]
- Termatosaurus albertii[6]
- Proganochelys quenstedtii[8]
- Paleollanosaurus sp.[7]
- ?Variodens sp.[6]
- cf. Diphydontosaurus sp.[7]
- cf. Eudimorphodon sp.[6]
- Archosauriformes indet.[9]
- Nothosauridae indet.[6]
- Pterosauria indet.[6]
- Sphenodontia indet.[7]
- Theropoda indet.[10]
- Amphibians
- Fish
- Invertebrates
References edit
- ^ a b Klettgau Formation at Fossilworks.org
- ^ Jordan et al., 2016
- ^ Zahner & Brinkmann, 2019
- ^ Rauhut et al., 2020
- ^ a b Tatarinov, 1985
- ^ a b c d e f g h i j k l m n o p Clemens, 1980
- ^ a b c d 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. doi:10.1186/s13358-022-00260-4. ISSN 1664-2376. PMC 9613585. PMID 36317153.
- ^ Butler et al., 2006
- ^ Carrano, 2020
- ^ a b c Schalch & Peyer, 1919
- ^ Peyer, 1956
Bibliography edit
- Carrano, M. T. 2020. Taxonomic opinions on the Dinosauria, .. unpublished.
- Rauhut, Oliver W. M.; Femke M. Holwerda, and Heinz Furrer. 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., and W. Brinkmann. 2019. A Triassic averostran-line theropod from Switzerland and the early evolution of dinosaurs. Nature Ecology & Evolution 3. 1146–1152. . doi:10.1038/s41559-019-0941-z PMID 31285577 ISSN 2397-334X PMC 6669044
- Whiteside, D. I.; C. J. Duffin, and H. Furrer. 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. .
- Jordan, Peter; Johannes S. Pietsch; Hansruedi Bläsi; Heinz Furrer; Nicole Kündig; Nathan Looser; Andreas Wetzel, and Gaudenz Deplazes. 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.; L. B. Porro, and A. B. Heckert. 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 10. 613–633. .
- 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., and B. Peyer. 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. .