摘要：A diverse shallow water assemblage of chondrichthyan microremains is described from the Famennian of the Chahriseh section, central Iran. twenty-two taxa are identified; of these two new taxa viz. Roongodus phijani gen. et sp. nov. (hybodontoidea) and Arduodens flammeus gen. et sp. nov. (Ctenacanthiformes) have been erected. two morphoecological subtypes of Ph. gothicus dentition, characteristic of deeper and shallower shelves, are proposed.
