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Röt Formation

The Röt Formation (or Rötton Formation) is a geologic unit of the Buntsandstein in Germany, preserving fossils from the Middle Triassic Epoch, specifically the Anisian stage. It lies above the Plattenstein and Solling Formations and beneath the Jena Formation. The formation consists of limestones, mudstones, shales, and sandstones deposited in a shallow marine environment. These sediments have yielded fossils of early archosaurs, temnospondyls, fish, and insects.

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Fossil content

The formation has provided the following fossils:4

GroupTaxaNotesImages
TemnospondylsEocyclotosaurus woschmidti56
Heptasaurus cappelensis (described as Mastodonsaurus cappelensis)7
Capitosauria indet.8
ReptilesAmotosaurus rotfeldensis9
Anomoiodon krejcii10
Crenelosaurus nigrosilvanus11
Cymatosaurus erikae12
C. erytheus13
C. fridericianus14
Marcianosuchus angustifrons
Sclerosaurus armatus15
Seemannia palaeotriadica16
Ctenosauriscidae indet.17
FishSelachii indet.18
InsectsRhoeniella granulata19

Correlations

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.20

See also

Bibliography

References

  1. Röt Formation at Fossilworks.org https://paleobiodb.org/classic/displayStrata?geological_group=Buntsandstein&formation=R%F6t&group_formation_member=R%F6t

  2. Butler et al., 2011, p.2

  3. Butler et al., 2011, p.25

  4. Röt Formation at Fossilworks.org https://paleobiodb.org/classic/displayStrata?geological_group=Buntsandstein&formation=R%F6t&group_formation_member=R%F6t

  5. Schoch & Werneburg, 1999

  6. Fraser & Rieppel, 2006

  7. Schoch & Werneburg, 1999

  8. Butler et al., 2011

  9. Ortlam, 1967

  10. Ortlam, 1967

  11. Ortlam, 1967

  12. Rieppel, 1997

  13. Rieppel, 1997

  14. Rieppel, 1999

  15. Sues & Reisz, 2008

  16. Von Huene, 1958

  17. Butler et al., 2011

  18. Butler et al., 2011

  19. Ansorge, 1994

  20. Butler et al., 2011, p.25