English: Morphological reconstruction of Alacaris mirabilis and Chengjiangocaris kunmingensis. a Full-body reconstruction of A. mirabilis in lateral view. b Full-body reconstruction of A. mirabilis in dorsal view. c Ventral view of the head and anterior trunk region of A. mirabilis showing gnathobasic protopodite ventral food groove. d Ventral view of the head and anterior trunk region of C. kunmingensis; note the differences in the morphology of the hypostome relative to A. mirabilis, and the presence of smaller gnathobasic endites on the proximal limbs. Abbreviations 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