Fig. 4 in The gaudryceratid ammonoids from the Upper Cretaceous of the James Ross Basin, Antarctica

Fig. 4. The gaudryceratid ammonoid Gaudryceras submurdochi Raffi and Olivero sp. nov., early Campanian (Upper Cretaceous), Antarctica, from Rabot Formation, Redonda Point locality (A–D, F) and Hamilton Norte locality (E) and from Santa Marta Formation, Brandy Bay locality (G). A. CADIC PI 416, holotype, phragmocone and part of the body chamber in lateral (A1) and ventral (A2) views. B. CADIC PI 428, phragmocone and part of the body chamber in lateral (B1) and ventral (B2) views. C. CADIC PI 421, phragmocone and part of the body chamber in lateral (C1) and ventral (C2) views. D. CADIC PI 442, phragmocone in lateral (D1) and ventral (D2) views; the arrows mark the beginnig of the body chamber. E. CADIC PI 417, transversal section to a diameter of 57.5 mm (E1), neanoconch ornamentation (E2). F, G. Neanoconch ornamentation. F. CADIC PI 422. G. CADIC PI 431. The arrows point to major ribs in the neanoconch. Scale bars 1 mm, except E2, F, G 10 mm.