Fig. 4

Hoplitaspis hiawathai, UWGM 2268 – almost complete specimen preserving prosomal appendages and buckler dorsal and ventral surface. a Specimen with detachable section in situ showing the buckler ventral plate. Note the projection of appendage VI from the prosoma midsection. b Specimen with the detachable section removed, showing the buckler tergites. Portions of the prosomal ventral plate ‘triangular area’ are preserved at the prosoma anterior. c Dorsal view of the detachable section, which preserves the buckler and anterior segments of the postabdomen in three-dimensional relief. II–VI = appendages II–VI, VI-6–VI-8 = appendage VI podomeres 6–8. Scale bars = 10 mm