恐龍卡第 1973 張，共 2 027 張

Yinlong

名字的意思： “hidden dragon”1

吃：植物角龍類侏羅紀晚期

Yinlong was one of the very first horned dinosaurs, even though it had no horns or frill! It lived during the Late Jurassic in what is now China, and it scampered around on two legs like a bird.2 1

生存年代

162 到 155 百萬年前4

侏羅紀晚期

化石發現地

Wucaiwan, Xinjiang, China (Shishugou Formation)2 1

長度

1.2 m (3.9 ft)1 2

體重

10 kg (22 lb)1

高度

0.5 m (1.6 ft)

估計值

最高速度

時速約 28 公里（17 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 2.5 隻家貓一樣重

跟 2.5 隻家貓從鼻子接到尾巴一樣長跟 7 根香蕉頭尾相接一樣長跟 83 根香蕉一樣重能在 13 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Yinlong 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)

Yinlong 時速約 28 公里 (17 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

Yinlong is the oldest known ceratopsian dinosaur, living about 158 million years ago.1 2

It had very short arms compared to its long legs, about 40% as long, so it walked on two feet.2

Yinlong's name comes from the movie 'Crouching Tiger, Hidden Dragon', which was filmed near where its fossils were found.2 1

Seven smooth stones, called gastroliths, were found in its ribcage. They helped grind tough plants inside its belly.2

Its skull was deep and wide, and the back part was very broad, but it had no horns or bony frill like later relatives.2 1

Yinlong's teeth had a vertical wear facet with a little shelf, which is a special feature not seen in many other dinosaurs.2

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

?How big was Yinlong?

Yinlong was a small dinosaur, about 1.2 metres (3.9 feet) long and weighed around 10 kilograms (22 pounds).1 3

?What did Yinlong eat?

Yinlong was an herbivore, meaning it ate plants. It had seven smooth stones called gastroliths in its belly that helped grind up tough plant material.1

?Did Yinlong have horns?

No, Yinlong had no horns or bony frill on its skull, even though it is one of the earliest horned dinosaurs (ceratopsians).1

?When did Yinlong live?

Yinlong lived during the Late Jurassic Period, about 158 million years ago. It is the oldest known ceratopsian dinosaur.1 3

?Where was Yinlong found?

Yinlong fossils were discovered in the Shishugou Formation in Xinjiang Province, China.1

?How did Yinlong get its name?

Yinlong means 'hidden dragon' in Chinese, and its name was inspired by the movie 'Crouching Tiger, Hidden Dragon', which was filmed near where its fossils were found.1

給恐龍專家

學名: Yinlong
命名者: Xu et al. 20064
類群: 角龍類
科 / 演化支: Chaoyangsauridae4
分類: Ornithischia > Ceratopsia4
岩石的年代: 162 到 155 百萬年 (Oxfordian)4
岩層: Shishugou4
國家: 中國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Yinlong was named in 2006 by Xu Xing and colleagues, based on a nearly complete skeleton discovered in 2004 in the Shishugou Formation of Xinjiang, China.1 2
仍有爭議: Scientists are not sure exactly how Yinlong is related to other early horned dinosaurs, because it has features that look like both later ceratopsians and more primitive ornithischians.2