FIG. 16 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)

FIG. 16. — Selected transverse serial sections, illustrating the development of internal structures in Stegerhynchus? decemplicatus duplex Nikiforova & T. Modzalevskaya, 1968 (N 39/12991). Measurements: length 7.7 mm, width 10.3 mm, thickness 4.9 mm; loc. 13, bed 89, Vodopad Formation. Numerical designations are the same as on Fig. 11. Scale bar: 2 mm.