The Germanic Trias Supergroup (German: Germanische Trias-Supergruppe) is a lithostratigraphic unit (a sequence of rock strata) in the subsurface of large parts of western and central Europe (north of the Alps) and the North Sea.
The Germanic Trias formed in the large Germanic Basin, a basin that covered much of midwestern Europe (including the south of the North Sea and Baltic Sea) during the Triassic.
Radiometric dating has shown the age of the Germanic Trias is not totally corresponding with the Triassic period.
The base of the Buntsandstein was formed during the Changhsingian, the uppermost stage of the Permian, about 252 million years ago.
The Bunter of British stratigraphy is similar in age, lithology and facies to the Buntsandstein.