恐龍卡第 0131 張，共 2 027 張

Aorun

名字的意思： “dragon king of the West Sea”1 2

吃：肉肉食恐龍侏羅紀中期

Aorun was a tiny, meat-eating dinosaur that lived about 161 million years ago. It was only about 1 meter (3.3 feet) long and weighed as much as a small cat. Scientists think it was a baby, less than one year old, when it died.1 2

生存年代

165 到 162 百萬年前3

侏羅紀中期

化石發現地

Wucaiwan locality, Shishugou Formation, Xinjiang, China1 2

長度

1 m (3.3 ft)1 2

體重

1.5 kg (3 lb)1 2

最高速度

時速約 23 公里（14 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？

牠有多重？

跟 12 根香蕉一樣重

跟 2 隻家貓從鼻子接到尾巴一樣長跟 6 根香蕉頭尾相接一樣長比一隻家貓還輕跟 12 根香蕉一樣重能在 16 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Aorun 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)

Aorun 時速約 23 公里 (14 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

Aorun is one of the oldest known coelurosaur dinosaurs, a group that includes birds and their closest relatives.1 2

The only fossil of Aorun was discovered in 2006 by a team of scientists from the USA and China. They first spotted a leg bone sticking out of the ground, and when they dug it up, they found the skull underneath.1 2

Aorun had between 25 and 30 teeth in its lower jaw, but only 12 in its upper jaw. Scientists think this is because it was a baby, and adults would have had more teeth.1

Aorun lived in a warm, seasonal dry environment alongside many other dinosaurs, including the long-necked sauropod Mamenchisaurus and the horned dinosaur Yinlong.1

The name Aorun comes from a Chinese myth about the Dragon King of the West Sea, who appears in the story 'Journey to the West'.1 2

Aorun was named after Professor Zhao Xijin, a famous Chinese paleontologist who led many important dinosaur digs.1 2

Aorun 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Aorun 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 Aorun 最常被問的問題

?What did Aorun eat?

Aorun was a meat-eater that probably ate small lizards, mammals, and crocodile relatives. Its small, numerous teeth were good for catching such prey.2

?How big was Aorun?

The only known Aorun fossil was about 1 metre (3.3 feet) long and weighed about 1.5 kilograms (3.3 pounds). But it was a baby less than one year old, so adults might have been bigger.1

?When did Aorun live?

Aorun lived about 161 million years ago, during the Late Jurassic Period. That makes it one of the oldest known coelurosaur dinosaurs.1

?Is Aorun a dinosaur?

Yes, Aorun is a dinosaur. It is a carnivorous theropod dinosaur, a group that includes meat-eaters like T. rex and the ancestors of birds.1

給恐龍專家

學名: Aorun
命名者: Choiniere et al. 20133
類群: 肉食恐龍
科 / 演化支: Alvarezsauria3
分類: Theropoda3
岩石的年代: 165 到 162 百萬年 (Callovian)3
岩層: Shishugou3
國家: 中國3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Aorun was discovered in 2006 by a team led by Jonah Choiniere and James Clark during a Sino-American expedition in Xinjiang, China. It was officially named and described in 2013.1 2
仍有爭議: Some scientists think Aorun might be a carnosaur instead of a coelurosaur, but most agree it is a very early coelurosaur.1