Fig. 7 in Bashkirian rugose corals from the Carboniferous Mattson Formation in the Liard Basin, northwest Canada -stratigraphic and paleobiogeographic implications

Fig. 7. Lithostrotionid rugose coral Nemistium liardense sp. nov. from Liard Basin, Northwestern Territories, Canada, Mattson Formation, perhaps lower Bashkirian. A. GSC 140520, holotype, longitudinal section of offsetting corallite (A1), transverse section of colony fragment (A2). B. GSC 140526, transverse section showing broken corallites (white arrows) at periphery of colony of Heritschioides simplex sp. nov.; upper part (black arrows) indicates fragment of colony of Nemistium liardense sp. nov.