Figure 7.16-17. Protriticites sphaericus Volozhanina 1962, scale bar = 33mm, both axial sections, bed 81.0 m, 16, (PMO-43861/5a); 17, (PMO-43861/26a). ). Fusulinid assemblage of Protriticites pseudomontiparus, Obsoletes obsoletus Zone.