Houetal_Supplementary Data 1

Supposed protaspid and meraspides of Zhangshania typica from the Hongjingshao Formation, in Kunming, Yunnan Province, southern China: (1), supposed protaspid of this species, YKLP 12249; (2), same specimen of YKLP 12249 photographed under different lighting; (3), Meraspid degree 2, YKLP 12250; (4), enlargement of pygidium of specimen YKLP 12250; (5), Meraspid degree 3, YKLP 12251; (6), enlargement of pygidium of specimen YKLP 12251. p, pygidial segment; t, thoracic segment. Same abbreviations seen below. Scale bars are (1, 2, 4, 6) 200 µm; (3, 5) 500 µm.