New data on duck-billed dinosaurs (Ornithischia, Hadrosauridae) from the upper cretaceous of Tajikistan

被引：8

作者：

Averianov, A. O. ^{[1
]}

Alifanov, V. R. ^{[2
]}

机构：

[1] Russian Acad Sci, Inst Zool, St Petersburg 199034, Russia

[2] Russian Acad Sci, Borissiak Paleontol Inst, Moscow 117997, Russia

来源：

PALEONTOLOGICAL JOURNAL | 2012年 / 46卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

Hadrosauridae; Ornithishia; Yalovach Formation; Santonian; Upper Cretaceous; Tajikistan; ASIAN ORNITHOPODS DINOSAURIA; UZBEKISTAN;

D O I：

10.1134/S0031030112050036

中图分类号：

Q91 [古生物学];

学科分类号：

0709 ; 070903 ;

摘要：

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.

引用

页码：512 / 519

页数：8

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