Stemmatoceras Maschke, 1907 Stemmatoceras

Seyed-Emami, Kazem, Fürsich, Franz T., Wilmsen, Markus, Majidifard, Mahmoud R. & Shekarifard, Ali, 2008, Lower and Middle Jurassic ammonoids of the Shemshak Group in Alborz, Iran and their palaeobiogeographical and biostratigraphical importance, Acta Palaeontologica Polonica 53 (2), pp. 237-260 : 256

Genus Stemmatoceras Maschke, 1907 Stemmatoceras ? sp.

Fig. 6K.

Material.—A single specimen from Sharif−Abad (050512− 13).

Discussion.—A fragment of a large and coarsely ribbed Stephanoceratidae was found at Sharif−Abad (level H), which may be a Stemmatoceras from the Middle Bajocian. Stephanoceratidae are common in the Badamu Formation of the Kerman area ( Seyed−Emami 1967, 1971, 1988), but have been never reported with certainty from the Alborz Range.