恐龍卡第 0382 張，共 2 027 張

Chakisaurus

名字的意思： “Chaki means guanaco in the Tehuelche language and saurus means lizard in Greek”1

吃：植物有喙的草食恐龍白堊紀早期

Chakisaurus was a fast-running, plant-eating dinosaur that lived in what is now Argentina about 90 million years ago. It had a strange tail that curved downward, unlike most other dinosaurs. It could run very quickly to escape predators.1

生存年代

110 到 106 百萬年前4

白堊紀早期

化石發現地

Pueblo Blanco Natural Reserve, Río Negro province, Argentina4 1

長度

2.5 到 3 m (8.2 到 9.8 ft)1

高度

0.7 m (2.3 ft)1

最高速度

時速約 46 公里（29 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？

跟 3 隻狗從鼻子接到尾巴一樣長跟 17 根香蕉頭尾相接一樣長能在 7.8 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Chakisaurus 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)

Chakisaurus 時速約 46 公里 (29 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

Chakisaurus had a tail that curved downward, which is very unusual for a dinosaur. Most dinosaurs held their tails straight out.1

It was a fast runner, and scientists think its curved tail helped it balance while running.1

Chakisaurus was about the size of a large dog, reaching 2.5 to 3 meters (8 to 10 feet) long.1

It lived during the Late Cretaceous period, about 90 million years ago.1

Chakisaurus is the first named ornithischian dinosaur from the Huincul Formation in Argentina.2

Its name comes from the Tehuelche word 'chaki' meaning guanaco, a fast South American animal, and 'saurus' meaning lizard.1

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

?How big was Chakisaurus?

About 2.5 to 3 metres long and 70 centimetres tall at the hip, roughly the size of a large dog.1

?What did Chakisaurus eat?

It was a plant-eater, or herbivore, that ate leaves and other plants.1

?Why did Chakisaurus have a curved tail?

Scientists think the downward-curved tail helped it balance while running fast, but they are still studying it.3 1

?When did Chakisaurus live?

It lived about 90 million years ago, during the Late Cretaceous Period.1

給恐龍專家

學名: Chakisaurus
命名者: Nogueira et al. 20244
類群: 有喙的草食恐龍
科 / 演化支: Elasmaria4
分類: Ornithischia > Ornithopoda > Iguanodontia4
岩石的年代: 110 到 106 百萬年 (Albian)4
岩層: Huincul4
國家: 阿根廷4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Chakisaurus was named by Rodrigo Alvarez Nogueira and colleagues in 2024. The fossils were found at the Pueblo Blanco Natural Reserve in Río Negro, Argentina.4 1
仍有爭議: Scientists are still debating exactly how Chakisaurus used its downward-curved tail, and whether it helped with running or something else.1