Fig. 58 in An early Cambrian fauna of skeletal fossils from the Emyaksin Formation, northern Siberia

Fig. 58. Bradoriids Mongolitubulus spinosus (Hinz, 1987) from lower Cambrian Emyaksin Formation, Bol'shaya Kuonamka River and basal Kuonamka Formation, Malaya Kuonamka River, Anabar Uplift, Siberia, fragments of spines. A. SMNH Ar 63450, sample 7/55; A1, lateral view; A2, close-up of A1 showing ornamentation; A3, oblique basal view; A4, oblique transversal view on the apical end of the fragment. B. SMNH Ar 63452, sample 1/9; lateral view. C. SMNH Ar 63453, sample 1/9; lateral view. D. SMNH Ar 63451, sample 7/70; D1, lateral view; D2, oblique transversal view on the basal end of the fragment. Scale bar: 300 μm, except A1, 120 μm; A2, 60 μm.