兀魯伯龍屬

兀魯伯龍屬
化石时期:晚白堊世土侖階
93.9–89.8 Ma
正模標本
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 蜥形纲 Sauropsida
总目: 恐龍總目 Dinosauria
目: 蜥臀目 Saurischia
亚目: 獸腳亞目 Theropoda
演化支 新獸腳類 Neotheropoda
演化支 鳥吻類 Averostra
演化支 坚尾龙类 Tetanurae
演化支 俄里翁龍類 Orionides
演化支 鳥獸腳類 Avetheropoda
下目: 肉食龍下目 Carnosauria
总科: 異特龍超科 Allosauroidea
演化支 异特龙类 Allosauria
演化支 鲨齿龙类 Carcharodontosauria
属: 兀魯伯龍屬 Ulughbegsaurus
Tanaka et al., 2021
模式種
烏茲別克兀魯伯龍
Ulughbegsaurus uzbekistanensis

Tanaka et al., 2021

兀魯伯龍屬名Ulughbegsaurus,意為「兀魯伯蜥蜴」)是一鯊齒龍類獸腳類恐龍,生存於白堊紀晚期的中亞,化石發現於烏茲別克土侖階貝斯克緹層英语Bissekty Formation,可能是目前已知年代最晚期的異特龍超科[1]模式種烏茲別克兀魯伯龍Ulughbegsaurus uzbekistanensis)於2021年命名、發表。[2]

發現

已知有三個骨頭:正模標本UzSGM 11-01-02是個左上頜骨CCMGE 600/12457是左上頜骨的枝端;ZIN PH 357/16是右上頜骨的後端。後者原先被歸類於同期的馳龍科依特米龍模式種烏茲別克兀魯伯龍Ulughbegsaurus uzbekistanensis)的名稱是在紀念15世紀帖木兒帝國蘇丹兼科學家的兀魯伯和其發現地。[2]

描述

估計身長7.5至8公尺及體重1噸。[2]

分類

2021年的研究使用兩種數據集進行兩次系統發生學分析來鑑定兀魯伯龍的親緣關係。如以下支序圖所示:第一種(左)將兀魯伯龍列在包含新獵龍和其他大盜龍類的未解決多分支英语polytomy關係中;第二種(右)將其與其他基礎鯊齒龍類並列多分支,而這次大盜龍類則被歸在暴龍超科[2]

古生物學

貝斯克緹層英语Bissekty Formation中,兀魯伯龍與其他肉食性獸腳類共存,包括暴龍超科帖木兒龍、馳龍科的依特米龍。其體型可能成為當地頂級掠食者,並代表著直到相當晚期的土侖階,鯊齒龍科仍是主宰的優勢獸腳類(而暴龍類還不是),至少在亞洲還是。[2][3]

參考來源

  1. ^ Rieger, Sarah. Newly discovered dinosaur predated tyrannosaurs — and at the time was a bigger apex predator. CBC News. 7 September 2021 [8 September 2021]. (原始内容存档于2022-01-03). 
  2. ^ 2.0 2.1 2.2 2.3 2.4 Tanaka K, Anvarov OU, Zelenitsky DK, Ahmedshaev AS, Kobayashi Y. A new carcharodontosaurian theropod dinosaur occupies apex predator niche in the early Late Cretaceous of Uzbekistan. Royal Society Open Science. 2021, 8 (9): Article ID 210923. doi:10.1098/rsos.210923可免费查阅. 
  3. ^ Black, Riley. New, Giant Carnivorous Dinosaur Was a Terror to Smaller Tyrannosaurs. Smithsonian Magazine. [2021-09-08]. (原始内容存档于2022-01-14) (英语). 

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