Fig. 23. Tommotiid Lapworthella Cobbold, 1921 in Early-middle Cambrian stratigraphy and faunas from northern Siberia

Fig. 23. Tommotiid Lapworthella Cobbold, 1921 from the Cambrian Erkeket Formation, Khorbusuonka River (A–D, F–L, O–Q) and Tyuser Formation, lower reaches of the Lena River (E, M, N), Siberia, Russia; samples 11/18.7 (G, L), 11/21.6 (H, I), 19/1.5 (D), 19/5.5 (F, J, K), 19/31.75 (Q), 20/1B (A–C), 20/5B (O, P), 21/22.7 (M, N), 21/112 (E). A–F, J, K. Lapworthella lucida Meshkova, 1969 sclerites, SMNH X11018–11025, respectively. G–I, L–N. Lapworthella tortuosa Missarzhevsky in Rozanov and Missarzhevsky, 1966 sclerites, SMNH X11026–11031, respectively. O–Q. Lapworthella dentata Missarzhevsky in Rozanov et al., 1969 sclerites, SMNH X11032–11034, respectively. Scale bar 250 µm.