恐龍卡第 1192 張，共 2 027 張

Mirischia

名字的意思： “wonderful pelvis”1 2

吃：肉肉食恐龍白堊紀早期

Mirischia was a small, speedy meat-eater that lived in what is now Brazil. It had a very unusual pelvis, with the left and right hip bones shaped differently. This dinosaur was about as long as a small car and probably hunted lizards and other tiny animals.1 2

生存年代

120 到 113 百萬年前4

白堊紀早期

化石發現地

Araripina region, Pernambuco, northeastern Brazil1 4

長度

2.1 m (6.9 ft)1

體重

7 kg (15 lb)1

高度

0.71 m (2.3 ft)

估計值

最高速度

時速約 34 公里（21 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 4 隻家貓從鼻子接到尾巴一樣長跟 12 根香蕉頭尾相接一樣長大約跟一隻家貓一樣重跟 58 根香蕉一樣重能在 11 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Mirischia 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)

Mirischia 時速約 34 公里 (21 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

Mirischia had a strange pelvis: the left ischium (hip bone) had a hole, while the right one had an open notch instead. This is why it was named 'asymmetrica'.1

Scientists found a piece of petrified intestine inside the Mirischia fossil. That is very rare for a dinosaur.1 2

The fossil also preserved a space between its pubic and ischial bones that scientists think was an air sac, like the ones birds have today.1

Mirischia lived about 108 million years ago, during the Early Cretaceous, in a hot, dry environment near a lagoon.1 2

Only one Mirischia fossil has ever been found. It was a subadult, so it was still growing when it died.1 2

Mirischia is a compsognathid, meaning it was a relative of the tiny European dinosaur Compsognathus.2

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

?How big was Mirischia?

It was about 2.1 metres (6.8 feet) long and weighed around 7 kilograms (15.4 pounds). That is about as long as a bicycle.1 3

?What did Mirischia eat?

Mirischia was a small meat-eater that probably hunted tiny animals like lizards.1

?Did Mirischia have air sacs like birds?

Yes. The fossil shows a space between its hip bones that scientists think was an air sac, just like the ones birds have today.1 3

?Where was Mirischia found?

It was found in northeastern Brazil, in the Chapada do Araripe region of Pernambuco.1 2

給恐龍專家

學名: Mirischia
命名者: Naish et al. 20044
類群: 肉食恐龍
科 / 演化支: Maniraptoromorpha4
分類: Theropoda4
岩石的年代: 120 到 113 百萬年 (Aptian)4
岩層: Romualdo4
國家: 巴西4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: The only Mirischia fossil was bought illegally from a fossil dealer by a German museum. In 2004, scientists Darren Naish, David Martill and Eberhard Frey named it Mirischia asymmetrica.1 2
仍有爭議: Scientists are not sure exactly how big Mirischia grew as an adult, because the only known fossil is from a subadult.1