Klettgau Formation

Geological formation in Switzerland

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	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.^[1]

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]

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

Amphibians

Labyrinthodontia indet.^[6]

Fish

Invertebrates

References

^ ^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

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Carrano, M. T. 2020. Taxonomic opinions on the Dinosauria, .. unpublished.

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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

‹ The template below (Cite LSA) is being considered for deletion. See templates for discussion to help reach a consensus. ›

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

‹ The template below (Cite LSA) is being considered for deletion. See templates for discussion to help reach a consensus. ›

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. .

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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

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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. .

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Tatarinov, L. P. 1985. New data on a collection of tetrapod teeth from the Rhaetian of Hallau (Switzerland). Paleontological Journal 1. 138–140. .

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Clemens, W. A. 1980. Rhaeto-Liassic mammals from Switzerland and West Germany. Zitteliana 5. 51–92. .

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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. .

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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. .