The Exter Formation is the only formation of the Upper Keuper or Rhätsandstein, and is a geologic formation in Germany. It preserves fossils dating back to the Rhaetian of the Triassic period (specifically around 205 Ma).

Fossil content

The formation has provided fossils of:

Mammals

Therapsids

Reptiles

Fish

Insects

  • Triassothemis gartzii

Flora

  • Becklesia franconica

See also

Bibliography

  • Van Konijnenburg-van Cittert, J. H. A.; Pott, C.; Schmeißner, S.; Dütsch, G.; Kustatscher, E. (2021), "The Rhaetian flora of Wüstenwelsberg, Bavaria, Germany: Description of selected gymnosperms (Ginkgoales, Cycadales, Coniferales) together with an ecological assessment of the locally prevailing vegetation", Review of Palaeobotany and Palynology, 288 (Article 104398), Bibcode:, doi:
  • Wintrich, T.; Hayashi, S.; Houssaye, A.; Nakajima, Y.; Sander, P. M. (2017), "A Triassic plesiosaurian skeleton and bone histology inform on evolution of a unique body plan", Science Advances, 3 (12) e1701144, Bibcode:, doi:, PMC , PMID
  • Barth, G.; Nel, A.; Franz, M. (2013), "Two new odonate-like insect wings from the latest Norian of northern Germany", Polish Journal of Entomology, 82 (3): 127–142, doi:
  • v. Huene, F (1940), Fossilium Catalogus. I: Animalia. Pars 93: Mammalia Triadica, F. Quenstedt (ed.), pp. 1–13
  • Hennig, E (1922), "Die Säugerzähne des württembergischen Rhät-Lias-Bonebeds", Neues Jahrbuch für Mineralogie, Geologie und Paläontologie, 46: 181–267
  • Fraas, E (1897), "Reste von Zanclodon aus dem oberen Keuper vom Langenberge bei Wolfenbüttel - Remains of Zanclodon from the upper Keuper of Langenberge near Wolfenbüttel", Zeitschrift der Deutschen Geologischen Gesellschaft, 49: 482–485
  • Plieninger, W. H (1847), "Zahne aus der oberen Grenzbreccie des Keupers bei Degerloch und Steinenbronn", Jahreshefte des Vereins für Vaterländische Naturkunde in Württemberg, 3: 164–167