Abstract
Duck-billed dinosaur remains (Hadrosauridae) from the Yalovach Formation (Lower Santonian) of the Isfara 2 and Kansai localities (northern Tajikistan) are described. Most of them belong to a flat-headed hadrosaurid which is distinguished from all other representatives of the family by the absence on the frontals of a facet for the nasals. In this feature, the Tajikistan hadrosaurid is similar to Bactrosaurus johnsoni from the Iren Dabasu Formation of China, which shows the minimum contact of the frontals and nasals; and in the wide prefrontal, it resembles Aralosaurus tuberiferus from the Bostobinskaya Formation in Kazakhstan. The theropod Troodon isfarensis Nessov, 1995 from Isfara 2 is described based on a hadrosaurid prefrontal.
Published Version
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