FIGURE 4 in Geometric morphometric assessment of Guanshan trilobites (Yunnan Province, China) reveals a limited diversity of palaeolenid taxa

FIGURE 4. The log-centroid size against regressed Procrustes ANOVA scores plot indicates the distinct clusters of the Palaeolenus douvillei and Megapalaeolenus deprati. Clusters bound by convex hulls of taxa. Hollow circles around points indicate specimens with 13 tergites and hollow pentagons around points indicate specimens with at least 14 tergites.