恐龍卡第 0624 張，共 2 027 張

Erketu

名字的意思： “named after Erketu, a Mongolian god”1

吃：植物長脖子恐龍白堊紀晚期

Erketu was a huge plant-eating dinosaur with an incredibly long neck. It lived in what is now Mongolia during the Early Cretaceous period. Imagine a giraffe with a neck that was almost half its body length!1 2

生存年代

100 到 72 百萬年前4

白堊紀晚期

化石發現地

Mongolia and China4 1

長度

15 m (49 ft)1

體重

5 公噸 (11,000 lb)3

高度

3.5 m (11 ft)

估計值

最高速度

時速約 19 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 3 台汽車一樣重

跟 3 台汽車排成一排一樣長跟 83 根香蕉頭尾相接一樣長大約跟一頭大象一樣重跟 1000 顆西瓜一樣重跟 6 整班小學生一樣重跟 11 隻北極熊一樣重能在 19 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Erketu 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)

Erketu 時速約 19 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

Erketu had one of the longest necks relative to its body size of any known dinosaur. Its neck was made of extremely long vertebrae, and scientists think it could reach over 8 metres (26 feet) long.2

The bones in Erketu's neck were hollow and full of air pockets, called camellae. This made its neck lighter, so it could hold it up.2

Erketu had a unique breastbone that was shaped like a crescent moon. This is different from many other sauropods.2

The first Erketu fossil was found in 2002 during a joint expedition by the American Museum of Natural History and the Mongolian Academy of Sciences.2

Erketu lived about 100 to 72 million years ago, during the Cretaceous period.4

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

?How big was Erketu?

Erketu was about 15 metres (49 feet) long and weighed around 5 tonnes (11,000 pounds). That is roughly as long as a bus and as heavy as a small elephant.3 1

?Did Erketu have a really long neck?

Yes, its neck was about twice as long as its body, which may be a record for neck-to-body ratio among sauropods. The neck could reach over 8 metres (26 feet) long.3 1

?What did Erketu eat?

Erketu was a herbivore, meaning it ate plants. Its long neck likely helped it reach high leaves, like a giraffe, so it was probably a high browser.1 3

?When did Erketu live?

Erketu lived during the Late Cretaceous, about 96 to 89 million years ago. That is later than the Early Cretaceous date mentioned in some sources, but the most recent estimates say Late Cretaceous.3 1

給恐龍專家

學名: Erketu
命名者: Ksepka and Norell 20064
類群: 長脖子恐龍
科 / 演化支: Euhelopodidae4
分類: Sauropodomorpha > Sauropoda > Macronaria4
岩石的年代: 100 到 72 百萬年 (Cenomanian / Campanian)4
岩層: Baynshire4
國家: 蒙古, 中國4
化石紀錄: The Paleobiology Database 收錄 2 筆4
發現: Erketu was named by Daniel Ksepka and Mark Norell in 2006. The first fossil was found in 2002 in the Gobi Desert of Mongolia, and it included neck bones, a breastbone, and part of a leg.2 1
仍有爭議: Scientists are not sure exactly how Erketu is related to other long-necked dinosaurs. Some think it belongs to a group called Somphospondyli, but its exact family tree is still debated.2