Fig. 3

Sepia vandervoorti sp. nov., Middle Miocene (upper Langhian–lowermost Serravallian). a RGM.1351051.a (part), with partially preserved dorsal shield and its imprints, documenting a narrow median keel. b RGM.1351051.b (counterpart). Scale bars equal 10 mm. c Detail of the prong and early ontogenetic chambers of the phragmocone. Scale bar equals 1 mm. d Apical part of the cuttlebone with shell remnants of the outer and inner cones. Scale bar equals 10 mm. e Detail of typically rhomboid characters of the anterior part of the cuttlebone. The square indicates where imprints of pillar structure are preserved. Scale bar equals 10 mm. f Remains of the dorsal shield with fine granulation. Scale bar equals 1 mm. g Detail of imprints of pillar structure (intracameral walls). h–kSepia sp., Lower Pliocene (Zanclean), northwestern Italy. i Connection of finely granulated shield with smooth prong. j Lateral view of the knife-like prong. k Ventrolateral view of phragmocone. Scale bar equals 10 mm