恐龍卡第 1107 張，共 2 027 張

Machairasaurus

名字的意思： “sword lizard”1

吃：每樣都來一點奇特的羽毛恐龍白堊紀晚期

Machairasaurus was a small, bird-like dinosaur with a parrot-like beak and long, blade-shaped claws on its hands. It lived in a hot desert in what is now Inner Mongolia, China, about 80 million years ago. Scientists think it used its claws to gather plants to eat, not to catch prey.1 3

生存年代

84 到 72 百萬年前3

白堊紀晚期

化石發現地

Bayan Mandahu, Inner Mongolia, China3 1

長度

1.5 m (4.9 ft)1

高度

0.62 m (2 ft)

估計值

最高速度

時速約 38 公里（24 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

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能在 9.5 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Machairasaurus 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)

Machairasaurus 時速約 38 公里 (24 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

Machairasaurus had very long, slender claws on its fingers that were shaped like curved swords, which is how it got its name.1

Its claws were about four times as long as they were tall at the base, making them blade-like.1

Only a partial arm and hand were found, but scientists think the whole dinosaur was about 1.5 metres long, roughly the size of a large dog.1

Machairasaurus lived in a hot, dry desert environment, similar to the modern Australian or Sonoran deserts.1

It belonged to a group of oviraptorids called Ingeniinae, which includes other dinosaurs like Heyuannia and Conchoraptor.3 1

The fossils of Machairasaurus were found alongside many fossils of the dinosaur Protoceratops, which was also common in that area.1

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

?How big was Machairasaurus?

About 1.5 metres (4.9 feet) long, roughly the size of a large dog.2 1

?What did Machairasaurus eat?

It was an oviraptorosaur, which were likely omnivores that ate plants, eggs, and small animals. Scientists think it used its claws to forage.2 1

?Did Machairasaurus have feathers?

Yes, it was a bird-like theropod dinosaur, and like many oviraptorids it probably had feathers.2

給恐龍專家

學名: Machairasaurus
命名者: Longrich et al. 20103
類群: 奇特的羽毛恐龍
科 / 演化支: Oviraptoridae3
分類: Theropoda > Oviraptorosauria3
岩石的年代: 84 到 72 百萬年 (Campanian)3
岩層: Bayan Mandahu3
國家: 中國3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Machairasaurus was named in 2010 by Nicholas Longrich, Philip Currie, and Dong Zhiming based on a partial arm and hand found in the Bayan Mandahu Formation of Inner Mongolia, China.3 1
仍有爭議: Scientists are not sure exactly how old the Bayan Mandahu rocks are, so the age of Machairasaurus is an estimate based on similar fossils.1