Röt Formation
From Wikipedia, the free encyclopedia
From Wikipedia, the free encyclopedia
The Röt Formation or Rötton Formation (German for Röt Shale), or Upper Buntsandstein, is a geologic formation of the Buntsandstein in Germany. It preserves fossils dating back to the Middle Triassic Epoch (Anisian or Aegean or Bithynian in the regional stratigraphy).[1] The formation overlies the Plattenstein and Solling Formations and is overlain by the Jena Formation.[2][3]
Röt Formation | |
---|---|
Stratigraphic range: Anisian (Aegean or Bithynian) ~ | |
Type | Formation |
Unit of | Buntsandstein |
Sub-units | Violet Horizon 5 Member |
Underlies | Jena Formation |
Overlies | Plattensandstein & Solling Formations |
Lithology | |
Primary | Limestone, mudstone, shale |
Other | Sandstone |
Location | |
Coordinates | 51.5°N 11.9°E |
Approximate paleocoordinates | 17.5°N 19.7°E |
Region | Sachsen-Anhalt, Baden-Württemberg, Bavaria, Hessen |
Country | Germany |
Extent | Central Germany |
The limestones, mudstones, shales and sandstones of the formation, deposited in a shallow marine environment, have provided fossils of early archosaurs, temnospondyls, fish and insects.
The formation has provided the following fossils:[1]
Group | Taxa | Notes | Images |
---|---|---|---|
Temnospondyls | Eocyclotosaurus woschmidti | [4][5] | |
Heptasaurus cappelensis (described as Mastodonsaurus cappelensis) | [4] | ||
Capitosauria indet. | [6] | ||
Reptiles | Amotosaurus rotfeldensis | [7] | |
Anomoiodon krejcii | [7] | ||
Crenelosaurus nigrosilvanus | [7] | ||
Cymatosaurus erikae | [8] | ||
C. erytheus | [8] | ||
C. fridericianus | [9] | ||
Marcianosuchus angustifrons | |||
Sclerosaurus armatus | [10] | ||
Seemannia palaeotriadica | [11] | ||
Ctenosauriscidae indet. | [6] | ||
Fish | Selachii indet. | [6] | |
Insects | Rhoeniella granulata | [12] | |
Based on the fossils of early archosaurs, the formation is correlated with the Donguz Formation of Russia, the upper Heshanggou Formation of China and the Holbrook Member of the Moenkopi Formation of Arizona.[3]
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