Anterior region of adult L. illecebrosa. Four pairs of biramous appendages (h1–h4) are identified in the head of various specimens. (A) YKLP 11089; (B) YKLP 11090; (C) YKLP 11091; (D) YKLP 11092; (E) YKLP 11093; (F) YKLP 11094. cs, cephalic shield; ey, eye; rs, rostrum; sga, short great appendage; t1, trunk appendage 1; ts1, trunk segment 1. (Scale bars: 3 mm.)