in 1990. He collected fossil bones in a road section along the Chita – Khabarovsk highway near the village of Kundur and sent them to Yuri L. Bolotsky. Large-scale excavations started at Kundur in 1999. Besides the abundant Olorotitan arharensis material, it has yielded many disarticulated saurolophine specimens. All these specimens were assigned to Kundurosaurus because the describers considered the recovered material to be homogeneous, and suggested that there is no reason to believe that more than one single saurolophine taxon lived in the Kundur area by latest Cretaceous period. Kundur is one of four rich dinosaur localities that have been discovered in the southeastern part ("Lower Zeya depression") of Zeya-Bureya sedimentary basin, eastern Asia: Jiayin and Wulaga localities are located in the Yuliangze Formation of northern Heilongjiang Province, China and Blagoveschensk and Kundur localities are located in the Udurchukan Formation of southern Amur Region, Russia. In each locality, the dinosaur fauna is largely dominated by lambeosaurine hadrosaurids (Charonosaurus jiayinensis and some non-diagnostic material of Mandschurosaurus amurensis from Jiayin, Sahaliyania from Wulaga, Amurosaurus from Blagoveschensk, and Olorotitan from Kundur), but the indeterminate hadrosaurid Arkharavia, from Kundur, and saurolophine (non-crested or solid-crested) hadrosaurids are also represented (Saurolophus kryschtofovici and other non-diagnostic material of M. amurensis from Jiayin, Wulagasaurus from Wulaga, Kerberosaurus from Blagoveschensk and Kundurosaurus from Kundur). Classification A phylogenetic analysis of saurolophines performed by Godefroit, Bolotsky & Lauters (2012) indicates that Kundurosaurus is nested within a clade including Edmontosaurini and Saurolophini, possibly as a sister-taxon of Kerberosaurus. It is based on the data matrix of Prieto-Márquez (2010), however Prieto-Márquez (2010) recovered Edmontosaurini as a sister-taxon of a monophyletic clade formed by Saurolophini and Kritosaurini while in Godefroit et al. (2012) the Edmontosaurini + Saurolophini clade is well supported and excludes Kritosaurini. The position of Kundurosaurus within Edmontosaurini collapses when fragmentary taxa are excluded from the analysis. In the full analysis, Kundurosaurus is placed as the sister-taxon of Kerberosaurus, which is known from the same region. It may therefore be postulated that K. nagornyi is a second species of the genus Kerberosaurus. This clade, however, is very weakly supported and synapomorphies uniting both taxa can only been found under optimization. Furthermore, although overlapping materials between the genera are limited to their partial skulls, according to Godefroit et al. (2012) Kundurosaurus can be differentiated from Kerberosaurus on the basis of the rostrocaudally longer and more robust dorsal maxillary process, more robust and