Lissoceras (Lissoceratoides) cf. erato (d’Orbigny, 1850)

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 : 517

Lissoceras (Lissoceratoides) cf. erato (d’Orbigny, 1850)

MATERIAL EXAMINED. — MI4N 8 “top”/12.

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

Smooth, evolute and compressed shell with a high, ovate whorl section. Flanks are slightly convex and

converge towards a narrow, rounded venter. Due to the poor preservation both the umbilical edge and wall cannot be observed. Measurements: see Table 4.

DISCUSSION

The absence of sculpture and the structure of the shell correspond to haploceratid or lissoceratid characters. Both whorl section and shell dimensions of the studied specimen correspond to those of the species L. (L.) erato , but the preservation of the umbilical area does not allow a firm specific assignement.

Family OPPELIIDAE Douvillé, 1890