恐龍卡第 1991 張，共 2 027 張

Yunmenglong

名字的意思： “Yunmeng dragon, after the Yunmengshan area where it was found”1

吃：植物長脖子恐龍白堊紀早期

Yunmenglong was a giant, long-necked plant-eater that lived in what is now central China. It had a very long neck, like a giraffe, and was one of the biggest dinosaurs in its region.2 1

生存年代

121 到 100 百萬年前4

白堊紀早期

化石發現地

Henan Province, central China2 1

長度

20 到 27 m (66 到 89 ft)1

體重

29 公噸到 30 公噸 (63,900 到 66,100 lb)1

高度

5.8 m (19 ft)

估計值

最高速度

時速約 11 公里（7 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 5 頭大象一樣重

跟 6 台汽車排成一排一樣長跟 150 根香蕉頭尾相接一樣長跟 6000 顆西瓜一樣重跟 38 整班小學生一樣重跟 67 隻北極熊一樣重高到能從 2 樓的窗戶往裡看能在 33 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Yunmenglong 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)

Yunmenglong 時速約 11 公里 (7 mph)

騎腳踏車的小朋友 時速約 12 公里 (7 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

Yunmenglong's neck bones were very long and had deep hollows called pleurocoels, which helped make its neck light.2

Its thigh bone (femur) was about 1.92 metres (6.3 feet) long, showing it was a giant.1

Yunmenglong lived during the Early Cretaceous period, about 121 to 100 million years ago.3

It is part of a group of long-necked sauropods that includes Euhelopus, Qiaowanlong, and Erketu.2

The name Yunmenglong means 'Yunmeng dragon', named after the Yunmengshan area where its fossils were found.1

Scientists think Yunmenglong may have been closely related to other Asian long-necked dinosaurs, forming a unique group.2

Yunmenglong 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Yunmenglong 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: Yunmenglong
命名者: Lü et al. 20134
類群: 長脖子恐龍
科 / 演化支: Somphospondyli4
分類: Sauropodomorpha > Sauropoda > Macronaria4
岩石的年代: 121 到 100 百萬年 (Aptian / Albian)4
岩層: Haoling4
國家: 中國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Yunmenglong was named and described in 2013 by Junchang Lü and colleagues, based on an incomplete skeleton found in the Haoling Formation of the Ruyang Basin, Henan Province, China.2 1
仍有爭議: Scientists are still debating exactly how Yunmenglong is related to other long-necked sauropods, and whether it belongs in a special Asian group.2