Fig. 4From: The functional head of the Cambrian radiodontan (stem-group Euarthropoda) Amplectobelua symbrachiata Holotype of A. symbrachiata. a, NIGPAS 115346. b, interpretative drawing. c, close-up of the ‘small podomere’ between podomeres 3 and 4. See Methods for abbreviations. Scale bars: a, b, 5 mm; c, 2 mmBack to article page