Fig. 13

Fossil evidence for extended parental care in Fuxianhuia protensa. a ELI MU76A-a, life assemblage including a stage 29 – most likely sexually mature – adult individual and four stage 8 juveniles. b ELI MU76B-b, counterpart, articulated stage 8 juvenile with preserved eyes. c ELI MU76A-c, articulated stage 8 juvenile with preserved gut; note the presence of reduced tergites underneath head shield (see also Fig. 3). d ELI MU76A-d, two articulated stage 8 juveniles with preserved gut and walking legs. Abbreviations: Abn, abdominal tergite; hs, head shield; tf, tail flukes; Thn, thoracic tergite; wl, walking legs