Fig. 72 in An early Cambrian fauna of skeletal fossils from the Emyaksin Formation, northern Siberia

Fig. 72. Spicules of heteractinid sponges from lower Cambrian Emyaksin Formation, Bol'shaya Kuonamka River and Malaya Kuonamka River, Anabar Uplift, Siberia; sample 7/70 (A–D, H), sample K1-3B (E–G, I–K). A. SMNH Sp 10334; plan (A1) and lateral (A2) views. B. SMNH Sp 10335; B1, lateral view; B 2, plan view on the distal end. C. SMNH Sp 10336; plan view. D. SMNH Sp 10337; plan (D1) and oblique lateral (D2) views. E. SMNH Sp 10338; plan (E1) and lateral (E2) views. F. SMNH Sp 10339; general view. G. SMNH Sp 10340; lateral view. H. SMNH Sp 10341; plan view. I. SMNH Sp 10342; lateral view. J. SMNH Sp 10343; oblique view. K. SMNH Sp 10344; lateral view. Scale bar 600 μm.