Exter Formation

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

• Thomasia antiqua
• Haramiyidae indet.

Therapsids

• Chalepotherium plieningeri

Reptiles

• "Ichthyosaurus" rhaeticus
• Megalosaurus cloacinus
• Nothosaurus cloacinus
• Phytosaurus cubicodon?
• Phytosaurus cylindricodon?
• Plateosaurus ornatus
• Rhaeticosaurus mertensi
• Termatosaurus albertii
• Termatosaurus crocodilinus
• Plateosaurus sp.
• Plesiosauria indet.

Fish

• Ceratodus cloacinus
• C. heteromorphus
• C. parvus
• C. trapezoides
• Hybodus cloacinus
• H. sublaevis
• Lissodus minimus
• Nemacanthus monilifer
• Sargodon tomicus
• Acrodus sp.
• Asterolepis sp.
• Raja sp.

Insects

• Triassothemis gartzii

Flora

• Becklesia franconica

See also

• List of fossiliferous stratigraphic units in Germany

References

Bibliography