Fig. 3
From: Mandibulate convergence in an armoured Cambrian stem chelicerate
Diagrammatic reconstruction of Habelia optata, morph A. a Ventral view of the cephalon. Right “intermediary” appendage removed to show gnathobase morphology. b Lateral view. c Dorsal view. d Isolated biramous thoracic limb in frontal, lateral and posterior views (left to right). For abbreviations, see Methods. Line drawings courtesy of Joanna Liang © Royal Ontario Museum