Fig. 14 in Early-middle Cambrian stratigraphy and faunas from northern Siberia

Fig. 14. Lingulid brachiopod Botsfordia caelata (Hall, 1847) from the Cambrian Emyaksin (F, G) and Kuonamka (A–E, H, I) formations, Malaya Kuonamka and Bol'shaya Kuonamka rivers, Siberia, Russia; samples K1/7B (A, B, H) and 1/9 (C–E, I) and 7/70 (F, G). A, B, F. Ventral valves, SMNH Br151240–151242, respectively. A1, A3, B2, close-ups showing brephic shell. C, D, G–I. Ventral valves, SMNH Br151243–151247, respectively. D2, enlargement showing brephic shell. E. Deformed specimen with both valves preserved, SMNH Br151248, view on the ventral valve. Scale bar: 1 mm (A2, B1, C, D1, E–I) and 250 µm (A1, A3, B2, D2).