FIGURE 4 in Continuous character variation within the Glossopleura-Anoria-Sonoraspis plexus: Dolichometopid trilobites from the Cadiz Formation (Cambrian: Miaolingian, Wuliuan), California

FIGURE 4. Comparison of cranial measurements (in mm) in dolichometopids assigned to Glossopleura (blue), Sonoraspis (red), and Anoria (black). A) Eye length relative to glabella length. B) Eye position as represented by mid-ocular distance versus glabella length. Genera coded by color as noted above. Species denoted by symbols as listed alphabetically here: Glossopleura bion (filled blue squares), G. boccar (open blue diamonds), G. campbelli (open blue circles), G. gigantea (open blue ovals), G. lodensis (blue stars), G. mckeei (open blue triangles), G. mohavensis (blue dashes), G. producta (filled blue triangles), G. similaris (open inverted blue triangles), G. stephenensis (filled inverted blue triangles), G. utahensis (vertical blue bars), G. walcotti (filled blue diamonds), G. yatesi (filled blue circles); Sonoraspis californica (filled red squares), S. gomezi (open red squares), S. nelsoni (red pluses); Anoria baton (black pluses), A. bessus (black X), and A. tontoensis (filled black circles),