(a – d) MGM-6755X, with digestive structures. (a) Overall view of specimen, with restored areas outlined in red and in lighter shade (for detailed indication of type of restoration see Supplementary Fig. 2); (b) detail of cephalic area and first thoracic segments with crop, intestine and digestive caeca; (c) latex cast of posterior cephalic and anterior thoracic caeca; (d) detail of the tip of the pygidial axis with remains of intestine and possible ?caeca. (e–h) MGM-6756X, part (e,f) and counterpart (g,h), of a specimen with preserved endopods. (e) Ventral right-hand side. (f) Detail of the cephalic and first thoracic endopods. (g) Counterpart of pygidium and five thoracic segments. (h) Detail of the last five thoracic endopods in positive relief. (b–d) have been whitened with MgO. Scale bar, 30 mm for (a,e,g); 20 mm for (b); 10 mm for (c,d,f,h).