恐龍卡第 1563 張，共 2 027 張

Ruixinia

名字的意思： “Ruixin's, after Ruixin Zhang who helped the museum”1

吃：植物長脖子恐龍白堊紀早期

Ruixinia was a long-necked, plant-eating dinosaur that lived in what is now China. It had a very long tail with at least 52 bones, and the last few tail bones were fused together into a rod-like tip.1

生存年代

126 到 120 百萬年前4

白堊紀早期

化石發現地

Liaoning Province, China1 2

長度

12 m (39 ft)1 2

體重

4 公噸 (8,800 lb)3

高度

2.9 m (9.5 ft)

估計值

最高速度

時速約 20 公里（12 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 台汽車一樣重

跟 2.5 台汽車排成一排一樣長跟 67 根香蕉頭尾相接一樣長跟 200 隻狗一樣重跟 800 顆西瓜一樣重跟 5 整班小學生一樣重跟 9 隻北極熊一樣重能在 18 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Ruixinia 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)

Ruixinia 時速約 20 公里 (12 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

Ruixinia's neck was over 4 meters long and had at least 15 neck bones, similar to other long-necked dinosaurs like Euhelopus and Mamenchisaurus.1

Its tail contained at least 52 vertebrae, and the last few were fused into a rod-like structure, a rare feature only seen in some Jurassic Asian sauropods.1

The chevron bone of the 20th tail vertebra had a pentagonal (five-sided) shape, which is unusual.1

Ruixinia lived alongside two other sauropods, Dongbeititan and Liaoningotitan, in the Jehol Biota ecosystem.1

Scientists disagree about whether Ruixinia was a titanosaur or a euhelopodid, because different studies place it in different groups.1

Ruixinia 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Ruixinia 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: Ruixinia
命名者: Mo et al. 20234
類群: 長脖子恐龍
科 / 演化支: Euhelopodidae4
分類: Sauropodomorpha > Sauropoda > Macronaria4
岩石的年代: 126 到 120 百萬年 (Barremian / Aptian)4
岩層: Yixian4
國家: 中國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Ruixinia was named in 2022 by Jinyou Mo and colleagues, based on a partial skeleton found in the Yixian Formation of Liaoning, China. The species name honors Ruixin Zhang, who helped the Erlianhaote Dinosaur Museum.1
仍有爭議: Scientists are still debating whether Ruixinia was a titanosaur or a euhelopodid, because different studies place it in different dinosaur family trees.1