FIG. 13 in Biostratigraphy and taxonomy of polymerid trilobites of the Manuels River Formation (Drumian, middle Cambrian), Newfoundland, Canada

FIG. 13. — Plutonides hicksii (Salter, 1866b); A, B, internal cast and mould of the same specimen, occipital node visible in both (NFM F-3717 from 10.38 m); C, internal cast of a thorax attached to the pygidium, pleural spines preserved, NFM F-3299 from 5.22 m; D, internal cast of a cranidium attached to the anterior 11 thoracic segments (NFM F-3352 from 7.56 m). Scale bars: 5 mm.