FIG. 3. — A-M in Upper Silurian thelodonts from Severnaya Zemlya Archipelago (Russia)

FIG. 3. — A-M, Paralogania ex gr. martinssoni (Gross, 1967); A, transitional scale; B-H, L, M, trunk scales; I, fin scale; J, K, scales of unknown position; A-E, G, I-L, scales in crown view; F, a scale in base view; H, M, scales in lateral view; N, Lanarkia? sp., a scale in lateral view; O-T, Phlebolepis elegans Pander, 1856; O-R, scales in crown view; S, magnified scale of Fig. 3Q showing the finely striated crown margin; T, scale in base view; O-Q, S, cephalo-pectoral scales; R, precaudal scale; T, precaudal? scale; A, Pi 7612; B, Pi 7609; C, Pi 7610; D, Pi 6845; E, Pi 7616; F, Pi 7617; G, H, Pi 7615; I, Pi 6847; J, Pi 6846; K, Pi 7608; L, LIG 35-900; M, LIG 35-901; N, LIG 35-902; O, Pi 7564; P, Pi 7560; Q, Pi 7562; R, Pi 7563; S, Pi 7562; T, Pi 7566; A-K, sample MF 11-1, Matusevich River, October Revolution Island, Ust-Spokojnaya Formation, Ludlow; L-N, sample 5m-1, Pioneer Island; O-T, sample MF 157-4, Spokojnaya River, October Revolution Island, Ludlow, Upper Silurian. Scale bars: A-D, F, G, K, S, 0.1 mm; E, H-J, M-O, Q, R, T, 0.2 mm; L, P, 0.3 mm.