New anomalocardid frontal appendages from the Guanshan biota, eastern Yunnan

摘要: Anomalocaridids were large predators of the Cambrian seas at top trophic pyramid. Complete anomalocaridid specimens have been rarely discovered and rigid isolated frontal appendages mouthparts are more commonly preserved. Here we study new material from Wulongqing Formation, Stage 4, Series 2 near Kunming, eastern Yunnan. Two forms described, namely Anomalocaris kunmingensis sp. nov. Paranomalocaris multisegmentalis gen. nov., The appendage A. probably comprises 15 podomeres which first one has a weakened skeletoned, second is armed with small spines, third remarkably robust proximal ventral spines 6 anisomerous auxiliary spines; paired associated 4–14; 12–14 dorsal last podomere bears distal spine distinctly larger than other. P. tapered backwards, consisting 22 visible podomeres; most 5 pairs 12–21 bear spines. provides additional evidence for our understanding diversity anomalocaridids in Cambrian. morphology these finds may indicate importance different feeding strategies ecosystem.