FIG. 40. — Acanthopora transitans n. gen., n in Devonian acanthodians from Severnaya Zemlya Archipelago (Russia)

FIG. 40. — Acanthopora transitans n. gen., n. sp., Matusevich River, outcrop 1, bed 21, Severnaya Zemlya Formation; A, specimen exposing pectoral, posterior dorsal and anal fin spines and squamation with myomeric structures, lateral view, anterior to left, holotype, LIG 35-A-403; B, enlarged area of squamation with myomeric structures in the central part of the holotype; C, enlarged fin spines of the same specimen; D, paratype LIG 35-A-401 in lateral preservation, squamation; E, enlarged area of squamation of the same paratype. Abbreviations: afs, anal fin spine; pdfs, posterior dorsal fin spine. Scale bars: A-D, 10 mm; E, 1 mm.