Euaspidoceras cf. lytoceroide (Gemmellaro, 1876)

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 : 534

Euaspidoceras cf. lytoceroide ? (Gemmellaro, 1876) ( Fig. 7D)

MATERIAL EXAMINED. — MI3 9/9.

STRATIGRAPHIC DISTRIBUTION. — Bed 9 of section Castello Inici, which has been assigned to the Middle Oxfordian Plicatilis Zone.

DESCRIPTION

The specimen is an eroded internal mold of an aspidoceratid whose size is approximately 85 mm. The inner whorls are dissolved but traces of ventrolateral tubercles are visible from a diameter of 7 mm. Eight tubercles per whorl exist at a diameter of approximately 21 mm. No traces of umbilical tubercles and ribs are visible. The preserved portion of the last whorl shows traces of ventrolateral tubercles and corroded folds that likely are rib remains. Because any traces of suture lines are visible it is impossible to state whether this specimen bears the body chamber or not.

Due to the incomplete preservation, measurements cannot be taken.

DISCUSSION

The preservation of the specimen is extremely poor but the tubercles of the inner whorls and the coiling aspect suggest a tentative comparison with E. lytoceroide .