Fig. 31 in An early Cambrian fauna of skeletal fossils from the Emyaksin Formation, northern Siberia

Fig. 31. Hyolith opercula Parkula cf. P. esmeraldina Skovsted, 2006 from lower Cambrian Emyaksin Formation, Malaya Kuonamka River, Anabar Uplift, Siberia; sample K1-3B. A. SMNH X 4660; inner (A1), oblique ventral (A2), lateral (A3, A4), and dorsal (A5) views. B. SMNH X 4661; lateral (B1), dorsal (B2), and inner (B3) views. Scale bar 300 μm.