Extended Data Figure 1: T. borealis MGUH 30500, frontal appendage.
From: A suspension-feeding anomalocarid from the Early Cambrian
a, Part, photographed in low-angle lighting coated with MgO. b, Camera lucida drawing with spines indicated (s1–s15). Bs, spines broken at the base. c, Detail of spine preserving auxiliary spines in relief (arrowed).
