Fig. 4 in Bashkirian rugose corals from the Carboniferous Mattson Formation in the Liard Basin, northwest Canada -stratigraphic and paleobiogeographic implications

Fig. 4. Thin sections of lithostrotionid rugose coral Nemistium liardense sp. nov. from Stikine Terrane, Northwestern Territories, Canada, Mattson Formation, lower Bashkirian (A, B), and Liard Basin, Northwestern Territories, Canada, Mattson Formation, perhaps lower Bashkirian (C–E). A. GSC 140524, transverse (A1) and longitudinal (A2) section. B. GSC 140525, transverse (B1) and longitudinal (B2) section. C. GSC 140522, longitudinal section of two corallites (C1) and transverse section (C2). D. GSC 140523, longitudinal section of offsetting corallite with strong pseudocolumella (D1) and transverse section of part of colony (D2). E. GSC 140520, holotype, oblique section of two young corallites.