The cambrian trilobite ShantungiaWalcott, 1905 is a monotypic genus, with S. spiniferaWalcott, 1905 as the genotype and is characterized by its long frontal spine extending medially from the anterior cranidial border. The genus has hitherto been known restricted in occurrence to the traditional Drepanura Zone of North China (Walcott, 1913; Endo and Resser, 1937; Qiu et al., 1983; Zhang and Jell, 1987). As DrepanuraBergeron, 1899 is preoccupied by a collembolan insect and NeodrepanuraÖzdikmen, 2006 was proposed as a replacement, this zone is referred to as the Neodrepanura Biozone herein.

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