Klettgau Formation

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
~235–202 Ma
TypeGeological formation
Unit ofKeuper
Sub-unitsErgolz, Gansingen, Berlingen, Seebi, Gruhalde & Belchen Members
UnderliesStaffelegg Formation
OverliesBänkerjoch Formation
Thickness30–60 m (98–197 ft)
locally up to 75 m (246 ft)
Lithology
PrimaryMudstone, marl
OtherDolomite, sandstone
Location
Coordinates47.7°N 8.5°E / 47.7; 8.5
Approximate paleocoordinates35.2°N 10.7°E / 35.2; 10.7
RegionAargau, Schaffhausen
Country  Switzerland
Type section
Named forKlettgau
Named byJordan et al.
LocationSeebi quarry
Year defined2016
Klettgau Formation (Switzerland)

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.[2]

Fossil content

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]

Mammals
Therapsids
Reptiles
Amphibians
Fish
Invertebrates

References
  1. Klettgau Formation at Fossilworks.org
  2. Jordan et al., 2016
  3. Zahner & Brinkmann, 2019
  4. Rauhut et al., 2020
  5. Tatarinov, 1985
  6. Clemens, 1980
  7. Whiteside et al., 2017
  8. Butler et al., 2006
  9. Carrano, 2020
  10. Schalch & Peyer, 1919
  11. Peyer, 1956

Bibliography
  • 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 unpublished.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. 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. 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 Paleontologische 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.
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