Hettangian

Hettange-Grande (; ; Lorraine Franconian: Grouss-Hetténgen) is a commune in the Moselle department in Grand Est in north-eastern France.

The Hettangian is the earliest age and lowest stage of the Jurassic Period of the geologic timescale. It spans the time between 201.3 ± 0.2 Ma and 199.3 ± 0.3 Ma (million years ago). The Hettangian follows the Rhaetian (part of the Triassic Period) and is followed by the Sinemurian.