恐龍卡第 1962 張，共 2 027 張

Yangchuanosaurus

名字的意思： “Lizard from Yang-ch'uan”1

吃：肉肉食恐龍侏羅紀中期到白堊紀早期

Yangchuanosaurus was a huge meat-eating dinosaur that lived in China during the Jurassic period. It was one of the top predators of its time, with sharp teeth and strong legs for chasing prey.1

生存年代

171 到 113 百萬年前7

侏羅紀中期到白堊紀早期

化石發現地

Yangchuanosaurus fossils have been found in Sichuan Province, China, particularly in the Shangshaximiao Formation.1 7

長度

8 m (26 ft)1 2

體重

1.44 公噸 (3,200 lb)1

高度

2.19 到 2.85 m (7.2 到 9.4 ft)3

最高速度

時速約 33 公里（21 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？

牠有多重？

跟 72 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 290 顆西瓜一樣重跟 76 個幼兒園小朋友一樣重跟 45 個小學生一樣重跟 3 隻北極熊一樣重能在 11 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Yangchuanosaurus 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)

Yangchuanosaurus 時速約 33 公里 (21 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

Yangchuanosaurus had six large holes in its skull that helped make the skull lighter, so it could move its head more easily.1

Its eyes faced forward, which gave it good depth perception to judge distances when hunting.1

It had a long tail that helped it balance its body when running.1

The first skeleton was found by workers digging foundations for the Shangyou Reservoir Dam in 1977.2 1

In 1981, fossils of Yangchuanosaurus shangyouensis were nearly lost in a flood when the Chongqing Museum of Natural History laboratory was partially submerged, but the fossils were saved.1

Yangchuanosaurus lived about 168 to 157 million years ago, during the Jurassic period.1

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

?How big was Yangchuanosaurus?

About 8 to 11 metres long and weighed up to 3.4 metric tons.4 1 5 6

?Was Yangchuanosaurus bigger than T. rex?

No, Yangchuanosaurus was smaller and lighter than T. rex, with longer arms.1

?What did Yangchuanosaurus eat?

It was a meat-eater that likely hunted large dinosaurs like Mamenchisaurus and may have also scavenged.1 6

?When did Yangchuanosaurus live?

It lived during the Jurassic period, about 168 to 145 million years ago.1 5 6

?Who discovered Yangchuanosaurus?

It was named by Chinese palaeontologist Dong Zhiming in 1978, discovered during construction of the Shangyou Reservoir Dam in 1977.4 6

?Why did Yangchuanosaurus have a long tail?

Its long tail helped balance its body when it ran after prey.1 6

迷思破解王

迷思： Some people think Yangchuanosaurus was a type of tyrannosaur.

真相： Yangchuanosaurus was actually an allosaur, not a tyrannosaur. It belonged to a different group of large meat-eating dinosaurs.1

給恐龍專家

學名: Yangchuanosaurus
命名者: Dong et al. 19787
類群: 肉食恐龍
科 / 演化支: Metriacanthosauridae7
分類: Theropoda > Allosauroidea7
岩石的年代: 171 到 113 百萬年 (Bajocian / Aptian)7
岩層: Shaximiao, Suining7
國家: 中國7
化石紀錄: The Paleobiology Database 收錄 4 筆7
發現: Yangchuanosaurus was discovered in 1977 by workers building the Shangyou Reservoir Dam in Sichuan, China. It was named by Dong Zhiming and colleagues in 1978.2 7
仍有爭議: Scientists debate the exact age of the rocks where Yangchuanosaurus was found, so the precise timing of when it lived is still uncertain.2