The Löwenstein Formation (Stubensandstein in Baden-Württemberg, Burgsandstein in Bavaria) is a lithostratigraphic formation of the Keuper in Germany.

It is underlain by the Mainhardt Formation and overlain by the Trossingen Formation.

It dates back to the middle Norian.

[1] Theropod tracks and an unnamed herrerasaur genus are known from the Lower Stubensandstein.

[2]