Figure 4

Paterina zenobia from the middle (Series 3, Stage 5) Cambrian Burgess Shale. A-C, ROM63182, WT talus. A, Plan view of specimens attached to a trilobite carapace, scale bar 5 mm B, Close up of anteromedial chaetae, scale bar 1 mm. C, Close up of posterolateral chaetae, scale bar 1 mm. D-G, ROM63183, S7; Tulip Beds Talus (Mount Stephen). D, Plan view, scale bar 5 mm. E, Close up of anteromedial chaetae. F, Close up of posterolateral chaetae. G, Close up of posterolateral chaetae. H-J, ROM63184, WT talus. H, Plan view, scale bar 5 mm. I, Close up of anteromedial chaetae, scale bar 5 mm. J, Close up of posterolateral chaetae, scale bar 1 mm. K-M, ROM63185, Talus above Walcott Quarry. K, Plan view, scale bar 5 mm. L, Close up of anteromedial chaetae. M, Close up of posterolateral chaetae. Scale bars 2.5 mm unless otherwise stated.