恐龍卡第 1970 張，共 2 027 張

Yi

名字的意思： “strange wing”1

吃：肉肉食恐龍侏羅紀中期到侏羅紀晚期

Yi was a tiny dinosaur that lived about 160 million years ago. It had wings made of skin, like a bat, instead of feathers like a bird. Yi could glide from tree to tree in the forests of ancient China.2 1

生存年代

165 到 155 百萬年前3

侏羅紀中期到侏羅紀晚期

化石發現地

Hebei Province, China1 2

體重

0.38 kg (1 lb)1

最高速度

時速約 16 公里（10 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？

牠有多重？

跟 3 根香蕉一樣重

比一隻家貓還輕能在 22 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Yi 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)

Yi 時速約 16 公里 (10 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

Yi had a long, rod-like bone sticking out from each wrist. This bone helped support a skin membrane that made up its wing.2 1

Yi's wings were different from any other dinosaur. They were made of skin, like a bat's wing, not feathers like a bird's.2 1

Yi weighed only about 380 grams (0.84 pounds), which is less than a can of soda.1

The only fossil of Yi was found by a farmer named Wang Jianrong in a quarry near Mutoudeng Village, China.1

Yi had a short, blunt snout and only a few teeth at the front of its jaws. The front teeth pointed slightly forward.1

Yi's third finger was the longest on its hand, which helped support its wing membrane.1

Yi lived in a warm, humid forest with ginkgo trees, conifers, and ferns, near lakes and active volcanoes.1

Yi 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Yi 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: Yi
命名者: Xu et al. 20153
類群: 肉食恐龍
科 / 演化支: Scansoriopterygidae3
分類: Theropoda3
岩石的年代: 165 到 155 百萬年 (Callovian / Oxfordian)3
岩層: Tiaojishan3
國家: 中國3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Yi was named in 2015 by a team led by Xu Xing. The only fossil was bought by the Shandong Tianyu Museum of Nature in 2007 and prepared by museum staff.1 2
仍有爭議: Scientists are not sure if the rod-like wrist bone was a new bone or a hardened piece of cartilage.1