Neostreptognathodus pnevi, the index of the Kungurian-base
Time：2006-10-26 viewd：2030 times
Neostreptognathodus pnevi is the index fossil species for the base of the Kungurian Stage. 1-3: Mechetlino, Urals (Chernykh, 2006); 4-5: Conda Mine, Idaho (Behnken et al., 1986); 6: Ziyun, Guizhou (from Chen Jun's Ph.D. theisis).
