Fig. 3
From: Middle Triassic Nautilida from the Besano Formation of Monte San Giorgio, Switzerland
Germanonautilus aff. ellipticus Parnes, 1986, PIMUZ 29942, Valle Stelle/Tre Fontane (Monte San Giorgio), Middle Besano Formation (bed 73), Secedensis Zone, Illyrian: a original specimen partially included in the matrix, lateral view, b ventral view, associated with an external mold of Stoppaniceras cf. artinii, c plaster cast replica of the same specimen, lateral view, d plaster cast replica of the same specimen, ventral view, e plaster cast replica of the same specimen, ventrolateral view, f drawing of the ventral view showing the hypothetical whorl section (in grey the flank areas)