Fig. 1. A in Morphology and developmental traits of the trilobite Changaspis elongata from the Cambrian Series 2 of Guizhou, South China

Fig. 1. A. Map showing the position of collecting localities in the Guizhou Province. B. Map of the fossil locality Lazizhai, 6.4 km from Jianhe, Guizhou Province, South China. C. Stratigraphical column of the Balang Formation (Cambrian Stage 4), showing the horizon where the material was collected arrows), and the stratigraphic occurrences of oryctocephalid trilobites.