Benetticeras cf. benettii Checa, 1985

Cecca, Fabrizio & Savary, Bérengère, 2007, Palaeontological study of Middle Oxfordian- Early Kimmeridgian (Late Jurassic) ammonites from the Rosso Ammonitico of Monte Inici (north-western Sicily, Italy), Geodiversitas 29 (4), pp. 507-548 : 537

Benetticeras cf. benettii Checa, 1985 ( Fig. 12B )

MATERIAL EXAMINED. — MI4W 8c top/1.

STRATIGRAPHIC DISTRIBUTION. — The specimen has been collected in bed 8d of section Monte Inici East, assigned with doubt to the Hauffianum Subzone of the Late Oxfordian Bimammatum Zone.

DESCRIPTION

Moderately involute shell. Depressed whorl section with convex flanks, large and rounded venter. The umbilical edge is rounded and the umbilical wall is almost vertical. Periumbilical tubercles are large and tend to widen on the flank. The suture line is characterized by L as deep as E and S 1 almost as high as S 2. Measurements: see Table 22.

DISCUSSION

The preservation of this specimen does not allow a more accurate determination. Nevertheless coiling, whorl and tubercle shapes are typical of B. bene ttii . The species B. vaii Sarti, 1993 is more evolute.

Figures

FIG. 12. — A, Physodoceras cf. wolfi (Neumayr, 1873), specimen MI4N 8c/3 from bed 8c of section Monte Inici East; B, Benetticeras cf. benettii Checa, 1985, specimen MI4W 8c top/1 from bed 8d of section Monte Inici East; C, Euaspidoceras cf. radisense (d’Orbigny, 1850), specimen MI4N 8 “top”/8, from bed 8top of section Monte Inici East. All figures natural size. Arrows indicate the beginning of the body chamber.