恐龍卡第 1856 張，共 2 027 張

Ulughbegsaurus

名字的意思： “Ulugh Beg's lizard”1

吃：肉肉食恐龍白堊紀晚期

Ulughbegsaurus was a huge meat-eating dinosaur that lived in what is now Uzbekistan. It was one of the top predators of its time, even bigger than the early tyrannosaurs that lived nearby.2

生存年代

94 到 90 百萬年前4

白堊紀晚期

化石發現地

Bissekty Formation, Kyzylkum Desert, Navoi Viloyat, Uzbekistan2

長度

7.5 到 8 m (25 到 26 ft)2

體重

1 公噸 (2,200 lb)2

高度

2.4 m (7.9 ft)

估計值

最高速度

時速約 36 公里（22 英里）

跑步, 估計值

牠生活在什麼時候？

三疊紀

侏羅紀

白堊紀

2 億 5200 萬年前20114566，小行星撞地球

牠有多大？

牠有多長？

牠有多高？

估計值

牠有多重？

跟 50 隻狗一樣重

跟 8 隻狗從鼻子接到尾巴一樣長跟 44 根香蕉頭尾相接一樣長跟 200 顆西瓜一樣重跟 53 個幼兒園小朋友一樣重跟 31 個小學生一樣重跟 2 隻北極熊一樣重能在 10 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Ulughbegsaurus 跟「你」比起來有多大？

只是在你的瀏覽器裡算算數學。什麼都不會被儲存或傳送出去。

牠有多快？

走路的人 時速約 5 公里 (3 mph)

騎腳踏車的小朋友 時速約 12 公里 (7 mph)

Ulughbegsaurus 時速約 36 公里 (22 mph)

一匹飛奔的馬 時速約 65 公里 (40 mph)

一隻獵豹 時速約 100 公里 (62 mph)

酷東西

趣味知識

Ulughbegsaurus was a carcharodontosaurian, a group of large predatory dinosaurs that were the top hunters before tyrannosaurs took over.2

It lived about 90 to 92 million years ago during the Turonian stage of the Late Cretaceous.2

The only known fossil is a left maxilla (upper jaw bone) that is 24.2 cm long and 13.1 cm tall.2

Ulughbegsaurus shared its home with smaller predators like the tyrannosauroid Timurlengia and the dromaeosaurid Itemirus.1

Its name honors Ulugh Beg, a 15th-century astronomer and mathematician from Central Asia.2

Scientists think Ulughbegsaurus was the apex predator of the Bissekty ecosystem, while tyrannosauroids were smaller mesopredators.2

Ulughbegsaurus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Ulughbegsaurus 可能的樣子。這只是猜測：真正的動物可能長得不一樣，也沒有人知道牠真正的顏色。

給恐龍專家

學名: Ulughbegsaurus
命名者: Tanaka et al. 20214
類群: 肉食恐龍
科 / 演化支: Carcharodontosauria4
分類: Theropoda > Allosauroidea4
岩石的年代: 94 到 90 百萬年 (Turonian)4
岩層: Bissekty4
國家: 烏茲別克4
化石紀錄: The Paleobiology Database 收錄 3 筆4
發現: The holotype maxilla was collected in the 1980s by a field team member of Lev Nessov in the Kyzylkum Desert, Uzbekistan. It was rediscovered in 2019 and named by Tanaka and colleagues in 2021.1 2
仍有爭議: Scientists are not sure exactly how big Ulughbegsaurus was because only a few jaw bones have been found. The length estimate of 7.5 to 8 metres is based on comparisons with other allosauroids.2