Summary: | FIG. 27. — Selected transverse serial sections, illustrating the development of internal structures in Undispirifer? obsoletiplicatus n. sp.; A, ventral valve (N 76/12991), length 17.3 mm, width 12.0? mm; B, dorsal valve (N 77/12991), length 14.7 mm, width 19.9 mm; loc. 21581, Severnaya Zemlya or Pod''emnaya formations. Numerical designations are the same as on Fig. 11. Scale bar: 2.3 mm. Published as part of Modzalevskaya, Tatiana L., 2003, Silurian and Devonian brachiopods from Severnaya Zemlya (Russian Arctic), pp. 73-107 in Geodiversitas 25 (1) on page 97, DOI: 10.5281/zenodo.5375016
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