FIG. 26 in Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic)

FIG. 26. — Undispirifer? obsoletiplicatus n. sp.; A-C, ventral view of different sizes pedicle valves; A, N 69/12991; B, holotype (N 68/12991); C, N 70/12991; D, E, dorsal view of a brachial valve (NN 71/12991, 72/12991); F, posterior view of a pedicle valve with interarea and open delthyrium (N 73/12991); G, H, external moulds of pedicle valves, showing a well developed muscle field and gonad impressions (NN 74/12991, 75/12991), loc. 215581, Severnaya Zemlya or Pod''emnaya formations. Scale bars: A-E, 6 mm; F-H, 5 mm.