Early Changhsingian (Late Permian) ammonoids from NW Iran

Abstract
Early Changhsingian ammonoids from the Transcaucasus-NW Iranian region are poorly known. Here we revise the ammonoids of this interval based on new findings in sections of the Aras Valley and Ali Bashi Mountains of the Julfa region, NW Iran. We revise the ceratitid genera Phisonites, Iranites, Shevyrevites and Dzhulfites. We introduce the new genus Araxoceltites with the three new species A. sanestapanus, A. laterocostatus and A. cristatus.