Fig. 5

In-depth analyses of the pygidial appendages of all three investigated specimens of Sinoburius lunaris. a Volume rendering and TIFF slices no 38, 40 and 43 of specimen YRCP 0011, dorsal view. b Volume rendering and TIFF slices no 118, 121 and 124 of the left pygidial appendages of specimen Hz-f-10-45, ventral view. c Isosurface model showing remnants of the left endopods and exopods of appendages 13–16 of specimen Hz-f-10-45, dorsal view. d Surface model of endopod 16 and 17 of specimen YKLP 11407 with prospective article boundaries (basipodite not possible to reconstruct due to preservation). e Isosurface model showing remnants of the right endopods and exopods of appendages 14–17 of specimen YKLP 11407, dorsal view. f Volume rendering (VRT) of the right pygidial appendages of specimen YKLP 11407, ventral view. g PCA plot of the pygidial appendages of all specimens. Each symbol represents one appendage (mean length of right and left appendages). Values were size-corrected via Burnaby-Back Projection (BBP). Eigenvalues: PC1: 0.235114. PC2: 0.217857. Renderings done with Amira. en, endopod; ex, exopod