Fig. 5. Eurypterid moult assemblages. AeC: Eurypterus lactustris from the Williamsville Formation in Ridgemount Quarry, Ontario. Photo credit: J. Utrup. A: Mostly complete moult ensemble with cephalic carapace and one opisthosomal segment dislocated and superimposed on the abdomen. YPM 208303. Scale bar 10 mm. B: Dissociated ventral plates with prosomal appendage attached. YPM 208456. Scale bar 10 mm. C: Ventral plate and swimming leg in moult ensemble. YPM 209023. Scale bar 10 mm. DeF: Adelopthalmid eurypterid from the Devonian Lower Old Red Sandstone of the Dinas Estate in Brecon, Powys,Wales. D: Moult ensemble with cephalic carapace (right) dislocated from all opisthomal segments of the abdomen (left). OUMNH D.2184. Scale bar 10 mm. EeF: Dislocated cephalic carapaces preserved in isolation, without the first opisthomal segment. E: OUMNH D.2178. Scale bar 5 mm. F: OUMNH D.2173. Scale bar 3 mm.