Figure 10
Ventral side of thorax and pygidium of Arthroaspis bergstroemi n. gen. n. sp. MGUH 30406, specimen with ‘folded over’ cephalon, part and counterpart. A. ventral aspect; A 1 , overview showing sternites and extent of appendages; A 2 , close up of abaxial region, showing distal lobes of exopods; A 3 close up, arrows point to spines on basipod; B. counterpart to specimen in A; B 1 detail of midventral region with sternites and basipod spines (arrows); B 2 , sternites and impressions of exopod lamellae.