Type
Zone
Age range
249.3–248.4 Ma
Early Triassic
Olenekian
Neospathodus pingdingshanensis
Borinella buurensis-Scythogondolella milleri
Neospathodus waageni
249.3249.3249.2249.2249.1249.1249.0248.9248.9248.8248.8248.8248.7248.7248.6248.6248.5248.4248.4