恐龍卡第 1936 張，共 2 027 張

Xiangyunloong

名字的意思： “auspicious cloud dragon”1

吃：植物長脖子恐龍侏羅紀早期

Xiangyunloong was a big, plant-eating dinosaur that lived in what is now China. It had a short neck but a very long and strong tail, which helped it balance its heavy body. This dinosaur shows that not all early long-necked dinosaurs had long necks!2

生存年代

201 到 175 百萬年前4

侏羅紀早期

化石發現地

Xiangyun County, Dali Bai Autonomous Prefecture, Yunnan Province, China2

長度

9 到 10 m (30 到 33 ft)2

高度

2.5 m (8.2 ft)

估計值

最高速度

時速約 22 公里（14 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

跟 2 台汽車排成一排一樣長跟 56 根香蕉頭尾相接一樣長能在 16 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Xiangyunloong 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)

Xiangyunloong 時速約 22 公里 (14 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

Xiangyunloong had a short neck but a very long and powerful tail, which is unusual for early sauropodomorphs.2

Its tail was so strong that it could act as a counterbalance, helping the dinosaur stand on two legs to feed.2

Scientists think Xiangyunloong represents an early stage of gigantism, or getting very big, in sauropodomorphs.2

Xiangyunloong lived about 200 million years ago during the Early Jurassic period.4

The fossil of Xiangyunloong was found about 200 kilometers west of the famous Lufeng dinosaur fossil sites in China.2

Xiangyunloong is known from a partial skeleton that includes neck bones, back bones, tail bones, and hip bones.2

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

?How big was Xiangyunloong?

About 9 to 10 metres long, making it one of the largest early sauropodomorph dinosaurs from China.1 2

?Did Xiangyunloong have a long neck?

No, it had a short neck, which is unusual for early sauropodomorphs. Instead, it had a very long and strong tail.2 3

?What did Xiangyunloong eat?

It was a plant eating dinosaur, like other sauropodomorphs.1

?Could Xiangyunloong walk on two legs?

Yes, its strong tail helped it balance on its hind legs to reach food, even though it had a short neck.2 3

迷思破解王

迷思： Many people think all early sauropodomorphs had long necks like later sauropods.

真相： Xiangyunloong had a short neck and a long, strong tail, showing that early sauropodomorphs had different body shapes.2

給恐龍專家

學名: Xiangyunloong
命名者: Hu et al. 20264
類群: 長脖子恐龍
科 / 演化支: Massopoda4
分類: Sauropodomorpha4
岩石的年代: 201 到 175 百萬年 (Hettangian / Toarcian)4
岩層: Fengjiahe4
國家: 中國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Xiangyunloong was named in 2026 by Hu and colleagues based on a partial skeleton found in the Fengjiahe Formation in Yunnan, China.2
仍有爭議: Scientists are still debating whether Xiangyunloong represents a new evolutionary path where the tail, not the neck, became long and strong.2