FIG. 12 in Biostratigraphy and taxonomy of polymerid trilobites of the Manuels River Formation (Drumian, middle Cambrian), Newfoundland, Canada

FIG. 12. — Paradoxides davidis Salter, 1863: A, internal cast of a cranidium, ornamentation on fixigenae preserved, occipital ring bears a node (NFM F-3842 from 11.19 m); B, mould of a cranidium, ornamentation on fixigenae and parts of doublure preserved (NFM F-3908 from 11.85 m); C, internal cast of a cranidium with doublure attached (NFM F-3663 from 12.06 m); D, internal cast of cranidium, occipital node slightly visible (NFM F-3934 from 12.08 m). Scale bars: 5 mm.