English: Alacaris multinoda from the Cambrian (Stage 3) Xiaoshiba Lagerstätte. a–e YKLP 12268 (holotype). a Complete individual in ventral view showing disarticulated head shield, appendicular organization, trunk tergites, and tailspine with paired flukes. b Details of area b, showing antennae, hypostome, SPAs, and three sets of walking legs with differentiated gnathobasic protopodites forming a ventral food groove. c Interpretative drawing of b. d Close-up of area d, showing multisegmented endopods with prominent protopodites, followed by walking legs with spinose endites (arrowed). e Close-up of area e, showing multisegmented endopods and flap-like exopods. f YKLP 12269, lateral view of a complete individual. g YKLP 12276, specimen with disarticulated head shield, showing organization of the anterior region. h Close-up of area h, showing the anterior sclerite with stalked eyes, the insertion of the paired antennae close to the anterior edge of the hypostome, and the proximal portions of the SPAs. ant: antenna, asc: anterior sclerite, exp: exopod, ey: eye, fg: food groove, gn: gnathobase, gut: alimentary canal, hs: head shield, hy: hypostome, m: mouth, Pn: podomeres, se: setae, SPA: specialized post-antennal appendage, tel: tailspine, tf: tail fluke, Tn: tegites, wln: walking legs