FIGURE 16. Pustulobolus triangulus n. gen et. n in Depth related brachiopod faunas from the lower Cambrian Forteau Formation of southern Labrador and western Newfoundland, Canada

FIGURE 16. Pustulobolus triangulus n. gen et. n. sp. from the Forteau Formation, Lower shale, Mount St. Margaret of western Newfoundland. 1-2, Ventral valve NFM F-2523, sample MSM-11; 1, oblique lateral view; 2, external view. 3- 4, Ventral valve NFM F-2524, sample MSM-11; 3, detail of larval shell; 4, detail of pitted larval shell ornament. 5, Ventral valve exterior NFM F-2525, sample MSM-11. 6, Ventral valve exterior NFM F-2526, sample MSM-5. 7-8, Ventral valve NFM F-2527, sample MSM-5; 7, exterior view; 8, detail of pustulose adult surface ornament. 9-10, Dorsal Valve NFM F-2528, sample MSM-7; 9, exterior view; 10, detail of larval shell in oblique view. 11, Conjoined shell NFM F- 2529, sample MSM-11, showing outline of dorsal valve and triangular ventral pseudointerarea. Scalebars equal 250 µm in figures 1-2, 5-7, 9 and 11; 50 µm in figures 3 and 10; 20 µm in figure 8 and 5 µm in figure 4.