恐龍卡第 1990 張，共 2 027 張

Yunguisaurus

名字的意思： “lizard from the Yunnan-Guizhou Plateau”1

吃：肉海生爬蟲類三疊紀中期嚴格來說不是恐龍

Yunguisaurus was a long-necked marine reptile that swam in the warm seas of ancient China. It looked a bit like a small plesiosaur, with a slender snout full of sharp teeth for catching fish. Even though it lived in the water, it was not a dinosaur,it was a type of sauropterygian, a cousin of the famous plesiosaurs.1 3

趣味小知識：這種海生爬蟲類在海裡游泳的時候，恐龍正在陸地上走路。大家都叫牠們恐龍，但牠們其實是爬蟲類的另一個分支。

生存年代

241 到 237 百萬年前3

三疊紀中期

化石發現地

Guizhou and Yunnan provinces, China, in the Falang and Zhuganpo Formations1 3

長度

1.7 到 4.2 m (5.6 到 14 ft)1

最高速度

時速約 24 公里（15 英里）

游泳, 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？

跟 4 隻狗從鼻子接到尾巴一樣長跟 23 根香蕉頭尾相接一樣長能在 7.5 秒內游完一座大泳池（50 公尺）

Yunguisaurus 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)

Yunguisaurus 時速約 24 公里 (15 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

Yunguisaurus had an unusually long neck with 49 vertebrae in its neck, more than most other pistosauroids.2

Its hands had extra finger bones, a condition called hyperphalangy, with a count of 1 to 5-8/9 to 7-4 in the fingers.2

The first fossil of Yunguisaurus was a nearly complete skeleton, missing only the tip of its tail.1

It lived during the Ladinian stage of the Middle Triassic, about 241 to 237 million years ago, when much of China was covered by shallow seas.3

Yunguisaurus had a unique combination of features, including a single opening between its pterygoid bones in the skull and a sharp ridge on top of its head.2

Its ulna bone (one of the lower arm bones) was shaped like an hourglass, which is unusual among reptiles.2

Yunguisaurus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Yunguisaurus 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: Yunguisaurus
命名者: Cheng et al. 20063
類群: 海生爬蟲類
科 / 演化支: Pistosauroidea3
分類: Sauropterygia3
岩石的年代: 241 到 237 百萬年 (Ladinian)3
岩層: Falang, Zhuganpo3
國家: 中國3
化石紀錄: The Paleobiology Database 收錄 4 筆3
發現: Yunguisaurus was named in 2006 by a team of scientists including Yen-Nien Cheng, Tamaki Sato, Xiao-Chun Wu, and Chun Li. The first skeleton was found near the Huangnihe River in Guizhou, China, and the species name honors Professor Jinling Li for her work on Triassic marine reptiles.1
仍有爭議: Scientists are still unsure about the exact lifestyle of Yunguisaurus. Some think it might have been a planktonic suspension feeder, while others believe it was an active predator of fish.3 2