A NEW SPECIES OF CHIMAEROID FISH FROM THE UPPER CRETACEOUS OF THE SARATOV REGION, RUSSIA

Amylodon karamysh sp. nov. (Chondrichthyes, Holocephali, Chimaeridae) is described from the Early Campanian (Late Cretaceous) of the Saratov Region, Russia. It is based on a single mandibular plate with a relat ively short outer margin and four small median tritors. The morphology of the mandibular plate of A. karamysh appears to have evolved from t he condition in the chimaerid Ischyodus, which implies that the sheari ng-type dentitions of Amylodon and Rhinochimaera were probably of inde pendent origin.