Fig. 6 in Middle Triassic Nautilida from the Besano Formation of Monte San Giorgio, Switzerland

Fig. 6 Nautilida gen. et sp. indet., PIMUZ 38668, P. 902/ Mirigioli (Monte San Giorgio), Middle Besano Formation (bed 98), uppermost Anisian: a lateral view, left side, b lateral view, right side, c ventral view, d aboral portion of ventral view showing suture line (ventral saddle). In figs. a and b the umbilical wall is not visible because is embedded in the matrix (here not showed), so it is difficult to judge where exactly the dorsum ends.The black point beside a, b, c, marks where was observed the suture line showed in d