干旱区生态环境知识资源中心(Arid): A new carcharodontosaurian theropod dinosaur occupies apex predator niche in the early Late Cretaceous of Uzbekistan

Arid

DOI	10.1098/rsos.210923
	A new carcharodontosaurian theropod dinosaur occupies apex predator niche in the early Late Cretaceous of Uzbekistan
	Tanaka, Kohei; Anvarov, Otabek Ulugbek Ogli; Zelenitsky, Darla K.; Ahmedshaev, Akhmadjon Shayakubovich; Kobayashi, Yoshitsugu
通讯作者	Tanaka, K (corresponding author), Univ Tsukuba, Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan.
来源期刊	ROYAL SOCIETY OPEN SCIENCE
ISSN	2054-5703
出版年	2021
卷号	8 期号:9
英文摘要	Carcharodontosauria is a group of medium to large-sized predatory theropods, distributed worldwide during the Cretaceous. These theropods were probably the apex predators of Asiamerica in the early Late Cretaceous prior to the ascent of tyrannosaurids, although few Laurasian species are known from this time due to a poor rock record. Here, we describe Ulughbegsaurus uzbekistanensis gen. et sp. nov. from the early Late Cretaceous (Turonian) of Central Asia, which represents the first record of a Late Cretaceous carcharodontosaurian from the region. This new taxon is represented by a large, isolated maxilla from the Bissekty Formation of the Kyzylkum Desert, the Republic of Uzbekistan, a formation yielding a rich and diverse assemblage of dinosaurs and other vertebrates from fragmentary remains. Comparison of the maxilla with that of other allosauroids indicates Ulughbegsaurus was 7.5-8 m in body length and greater than 1000 kg in body mass, suggesting it was the previously unrecognized apex predator of the Bissekty ecosystem while smaller known tryannosauroids and dromaeosaurids were probable mesopredators. The discovery of Ulughbegsaurus records the geologically latest stratigraphic co-occurrence of carcharodontosaurid and tyrannosauroid dinosaurs from Laurasia, and evidence indicates carcharodontosaurians remained the dominant predators relative to tyrannosauroids, at least in Asia, as late as the Turonian.
英文关键词	Bissekty Formation Carcharodontosauria dinosaur Late Cretaceous Tyrannosauroidea Uzbekistan
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000693572300012
WOS关键词	EVOLUTION
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364548
作者单位	[Tanaka, Kohei; Anvarov, Otabek Ulugbek Ogli] Univ Tsukuba, Life & Environm Sci, Tsukuba, Ibaraki 3058572, Japan; [Zelenitsky, Darla K.] Univ Calgary, Dept Geosci, Calgary, AB T2N 1N4, Canada; [Ahmedshaev, Akhmadjon Shayakubovich] State Comm Republ Uzbekistan Geol & Mineral Resou, State Geol Museum, Tashkent 100060, Uzbekistan; [Kobayashi, Yoshitsugu] Hokkaido Univ, Hokkaido Univ Museum, Sapporo, Hokkaido 0600810, Japan
推荐引用方式 GB/T 7714	Tanaka, Kohei,Anvarov, Otabek Ulugbek Ogli,Zelenitsky, Darla K.,et al. A new carcharodontosaurian theropod dinosaur occupies apex predator niche in the early Late Cretaceous of Uzbekistan[J],2021,8(9).
APA	Tanaka, Kohei,Anvarov, Otabek Ulugbek Ogli,Zelenitsky, Darla K.,Ahmedshaev, Akhmadjon Shayakubovich,&Kobayashi, Yoshitsugu.(2021).A new carcharodontosaurian theropod dinosaur occupies apex predator niche in the early Late Cretaceous of Uzbekistan.ROYAL SOCIETY OPEN SCIENCE,8(9).
MLA	Tanaka, Kohei,et al."A new carcharodontosaurian theropod dinosaur occupies apex predator niche in the early Late Cretaceous of Uzbekistan".ROYAL SOCIETY OPEN SCIENCE 8.9(2021).