Fig. 3: Details of contents in the anterior digestive tract.
From: Uniquely preserved gut contents illuminate trilobite palaeophysiology

a–e, Anterior oblique view of the head region: ventriculi (a); with transparent exoskeleton and hypostome (b); with hypostome (c); with hypostome transparent (d); with hypostome and ‘crumble’ (e). f, Posterior oblique view of the head region, hypostome transparent. Colour coding as in Fig. 1, ‘crumble’ in dark green; labelling in a and b for orientation. Scale bars, 1 mm.