恐龍卡第 1949 張，共 2 027 張

Xixiasaurus

名字的意思： “Xixia lizard”1

吃：肉迅猛龍類白堊紀晚期

Xixiasaurus was a small, bird-like dinosaur that lived in what is now China. It had a long snout, sharp claws, and probably feathers, just like its cousins.1

生存年代

90 到 72 百萬年前3

白堊紀晚期

化石發現地

Xixia County, Henan Province, China1

長度

1.5 m (4.9 ft)1

體重

8 kg (18 lb)1

高度

0.54 m (1.8 ft)

估計值

最高速度

時速約 35 公里（22 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 隻家貓一樣重

跟 3 隻家貓從鼻子接到尾巴一樣長跟 8 根香蕉頭尾相接一樣長跟 67 根香蕉一樣重能在 10 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Xixiasaurus 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)

Xixiasaurus 時速約 35 公里 (22 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

Xixiasaurus had 22 teeth in its upper jaw, and they had no serrations, which is unusual for a meat-eating dinosaur.2

Its skull was almost complete when found, but the back part was missing.1

The only known fossil includes part of the right arm and hand, with a complete first finger.2

Scientists think Xixiasaurus was closely related to Byronosaurus, another troodontid from Mongolia.1

The age of the rocks where it was found is debated, with estimates ranging from about 100 to 72 million years old.1

Because its nasal bones were not fused, the only known Xixiasaurus might have been a young animal.1

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

?How big was Xixiasaurus?

Xixiasaurus was about 1.5 metres (5 ft) long and weighed around 8 kilograms (18 lb). That is about as long as a small bicycle and as heavy as a large cat.1

?What did Xixiasaurus eat?

Scientists think Xixiasaurus may have been herbivorous or omnivorous because its teeth lacked serrations and could not slice meat. It probably ate plants and maybe small animals.1 2

?Did Xixiasaurus have feathers?

Yes, Xixiasaurus probably had feathers. Other troodontid dinosaurs like Jianianhualong had pennaceous feathers, so Xixiasaurus was likely covered in feathers too.1

?When did Xixiasaurus live?

Xixiasaurus lived during the Late Cretaceous Period, about 100 to 72 million years ago. The exact age of the rocks where it was found is still debated.1

迷思破解王

迷思： Xixiasaurus was a fierce meat-eater like other raptors.

真相： Its teeth had no serrations, so scientists think it may have eaten plants or a mix of plants and meat.2

給恐龍專家

學名: Xixiasaurus
命名者: Lü et al. 20103
類群: 迅猛龍類
科 / 演化支: Troodontidae3
分類: Theropoda > Troodontidae3
岩石的年代: 90 到 72 百萬年 (Coniacian / Campanian)3
岩層: Majiacun3
國家: 中國3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: The fossil was found in Xixia County, Henan Province, China, and named Xixiasaurus henanensis in 2010 by Lü and colleagues.1
仍有爭議: Scientists are not sure about the exact age of the Majiacun Formation where it was found, with different studies suggesting different ages.1