Wuchiapingian

The Wuchiapingian (also known as Wujiapingian, Djulfian, Dzhulfian, Longtanian, Rustlerian, Saladoan, Kazanian, or Castile) is the first of two stages of the Lopingian epoch of Permian period. It spans the time between 260.4 ± 0.7 Ma and 253.8 ± 0.7 Ma (million years ago).