恐龍卡第 1951 張，共 2 027 張

Xiyunykus

名字的意思： “western claw”1

吃：肉肉食恐龍白堊紀早期

Xiyunykus was a meat-eating dinosaur that lived in what is now China, about 130 million years ago. It was about the size of a large dog and had a long, slender claw on each hand. Scientists think it used its claws to dig for food, like insects or small animals.4 1

生存年代

137 到 133 百萬年前4

白堊紀早期

化石發現地

Xinjiang, China1 4

體重

15 kg (33 lb)2

最高速度

時速約 41 公里（25 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？

牠有多重？

跟 4 隻家貓一樣重

跟 120 根香蕉一樣重能在 8.8 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Xiyunykus 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)

Xiyunykus 時速約 41 公里 (25 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

Xiyunykus lived during the Early Cretaceous period, about 126 to 120 million years ago.1

Its name, Xiyunykus, means 'western claw' because it was found in western China.1

Scientists estimate that the holotype specimen weighed about 15 kilograms (33 pounds) and was around 9 years old when it died.2

Xiyunykus helps fill a 70-million-year gap in alvarezsaur evolution by showing a mix of primitive and advanced features.1

It had a long, sharp claw on each hand, which it probably used to dig for food.1

Xiyunykus is closely related to other alvarezsaur dinosaurs like Bannykus and Haplocheirus.2

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

?What did Xiyunykus eat?

Scientists think Xiyunykus used its strong claw to dig for insects and small animals, much like an anteater today.3

?How big was Xiyunykus?

Xiyunykus was about the size of a large dog. The holotype weighed about 15 kilograms (33 pounds) and was probably a sub-adult.1 2

?Why is Xiyunykus important?

Xiyunykus helps fill a 70-million-year gap in alvarezsaur evolution, showing a mix of primitive and advanced features.1 2

給恐龍專家

學名: Xiyunykus
命名者: Xu et al. 20184
類群: 肉食恐龍
科 / 演化支: Alvarezsauroidea4
分類: Theropoda4
岩石的年代: 137 到 133 百萬年 (Valanginian)4
岩層: Shengjinkou4
國家: 中國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Xiyunykus was named in 2018 by Xu Xing and his team. The only known skeleton was found in the Wucaiwan area of the Junggar Basin in Xinjiang, China.1 4