Back الثلاثي المبكر Arabic Triásicu Inferior AST Untertrias German Early Triassic English Triásico Inferior Spanish Behe Triasiko Basque تریاس پیشین Persian Varhaistriaskausi Finnish טריאס תחתון HE Kora triász Hungarian
The Lower Triassic is the first of three epochs of the Triassic period. It lasted from about 252.2 million years ago (mya) to ~247.2 mya. The Lower Triassic is the oldest epoch of the Mesozoic era. These rocks were laid down just after the great Permian–Triassic extinction event.
The Lower Triassic was called the Scythian stage, which can be found in older literature. In Europe, most of the Lower Triassic is composed of sandstone. It is a lithostratigraphic unit of continental red beds. They were formed on land under desert conditions.