Figure 2
From: Demecology in the Cambrian: synchronized molting in arthropods from the Burgess Shale
Supposed synchronized molting of megacheirans. (A-D) ROM 62275; (A) overview of the specimens (cross-polarized light); (B) close-up image of (A); (C) rose diagram of relative orientation of megacheiran specimens (N = 306); (D) close-up image of (B) showing associations with Dictyophycus gracilis Ruedemann, 1931, a putative alga, and Morania spp. Walcott, 1919, a putative cyanobacteria; (E,F) ROM 57711, single specimen with well-preserved telson (close up in (F)). Scale bars: 2 cm (A,B); 0.5 cm (D); 0.2 cm (E); 0.1 cm (F).