Fig. 5 in An early Cambrian fauna of skeletal fossils from the Emyaksin Formation, northern Siberia

Fig. 5. Helcionellid mollusc Parailsanella sp. 1 internal moulds from lower Cambrian Emyaksin Formation, Bol'shaya Kuonamka River, Anabar Uplift, Siberia; sample 7/36.7. A. SMNH Mo 160415; lateral (A 1), sub-apical (A 2), and upper (A 3) views. B. SMNH Mo 167655; lateral (B 1), sub-apical (B 2), and upper (B 3) views. C. SMNH Mo 167656; lateral (C 1), upper (C 2), and sub-apical (C 3) views. D. SMNH Mo 160416; lateral (D 1), oblique sub-apical D ), and upper (D ) views. Scale bar 600 μm.