Fig. 3 in Floian, Early Ordovician, trilobites from the Olongbluk Terrane, northwest China

Fig. 3. Asaphid trilobite Tsaidamaspis diarmatus Chang and Fan, 1960, from the middle part of the Duoquanshan Formation (upper Floian, Lower Ordovician) of Shihuigou, Delingha, northern Qinghai Province, China. A. NIGP 203156, cranidium. B. NIGP 203157, librigena. C. NIGP 203158, librigena. D. NIGP 203159, hypostome in dorsal (D1) and lateral (D2) views. E. NIGP 203160, pygidium. F. NIGP 203161, pygidium. G. NIGP 203162, pygidium. H. NIGP 203163, pygidium. Scale bars 5 mm.