恐龍卡第 0068 張，共 2 027 張

Alectrosaurus

名字的意思： “alone lizard”1

吃：肉暴龍類白堊紀晚期

Alectrosaurus was a medium-sized, meat-eating dinosaur that lived in Asia during the Late Cretaceous. It was an early relative of the famous Tyrannosaurus rex, but smaller and more lightly built. Scientists have mostly found its leg and foot bones, so they are still learning what the rest of it looked like.1

生存年代

100 到 72 百萬年前4

白堊紀晚期

化石發現地

Inner Mongolia, China; also reported from Uzbekistan, Kazakhstan, and Tajikistan4 1

長度

5 到 6 m (16 到 20 ft)1

體重

454 kg 到 907 kg (1,000 到 2,000 lb)2

高度

2 m (6.6 ft)

估計值

最高速度

時速約 40 公里（25 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 45 隻狗一樣重

跟 6 隻狗從鼻子接到尾巴一樣長跟 33 根香蕉頭尾相接一樣長跟 180 顆西瓜一樣重跟 48 個幼兒園小朋友一樣重跟 28 個小學生一樣重跟 2 隻北極熊一樣重能在 9 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Alectrosaurus 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)

Alectrosaurus 時速約 40 公里 (25 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

Alectrosaurus means 'alone lizard' because when it was first discovered, scientists thought it was a unique type of dinosaur.1

The only known skeleton of Alectrosaurus is mostly a hind leg and some foot bones. No complete skull has been found yet.1

Alectrosaurus had a special foot feature: the ends of its toe bones were swollen and raised up like little pedestals. Scientists call this the 'pediculate' condition.1

It lived about 90 to 83 million years ago, during the Coniacian to Campanian stages of the Late Cretaceous.1

Alectrosaurus was a tyrannosauroid, which means it was an early cousin of Tyrannosaurus rex, but much smaller and more slender.1

Some fossils from Uzbekistan and Mongolia were once thought to be Alectrosaurus, but scientists now think those bones belong to other, unknown tyrannosaurs.1

Alectrosaurus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Alectrosaurus 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。

你們都在問

關於 Alectrosaurus 最常被問的問題

?How big was Alectrosaurus?

It was about 5 to 6 metres (16 to 20 ft) long and weighed between 454 and 907 kg (1,001 to 2,000 lb).3

?What did Alectrosaurus eat?

It was a meat-eater, or carnivore, that hunted other animals.4

?Was Alectrosaurus a dinosaur?

Yes, it was a theropod dinosaur, a type of tyrannosauroid.3

?How fast could Alectrosaurus run?

It was a very fast runner, with long hindlimbs that made it a pursuit predator.3

?When did Alectrosaurus live?

It lived during the Late Cretaceous, about 96 to 83 million years ago.3

?Where was Alectrosaurus found?

Its fossils were found in the Iren Dabasu Formation in Inner Mongolia, China.3

給恐龍專家

學名: Alectrosaurus
命名者: Gilmore 19334
類群: 暴龍類
科 / 演化支: Tyrannosauroidea4
分類: Theropoda > Tyrannosauroidea4
岩石的年代: 100 到 72 百萬年 (Cenomanian / Campanian)4
岩層: Bissekty, Iren Dabasu, Khodzhakul4
國家: 烏茲別克, 哈薩克, 中國, 塔吉克4
化石紀錄: The Paleobiology Database 收錄 19 筆4
發現: Alectrosaurus was named by American paleontologist Charles W. Gilmore in 1933. The first fossils were found in the Iren Dabasu Formation in Inner Mongolia, China, during the Third Asiatic Expedition.4 1
仍有爭議: Scientists are not sure what the skull of Alectrosaurus looked like, because no skull bones have been found that definitely belong to it.1