FIGURE 11 in Evolutionary significance of the retiolitine Gothograptus (Graptolithina) with four new species from the Silurian of the East European Platform (Baltica), Poland and Lithuania

FIGURE 11. Tubaria of Gothograptus nassa (Holm, 1890) from Lithuania. A–B, E–F. Specimen with five pairs of thecae, VU RET-8, Kybartai-14 core, depth 1087.8 m, nassa Biozone; A. ventro-lateral view; B. view of distal end; E, enlargement of cross-section of nema; F, distal view of end of tubarium. C–D, G. tubarium with four pairs of thecae, ventral view, VU RET-9, Šiupyliai-69 core, depth 998.0 m, nassa Biozone; C. enlargement of th12 orifice; D. oblique view of th12 orifice; G. whole specimen.