恐龍卡第 1123 張，共 2 027 張

Majungasaurus

名字的意思： “Mahajanga lizard”1

吃：肉肉食恐龍白堊紀晚期

Majungasaurus was a meat-eating dinosaur that lived on the island of Madagascar near the end of the Age of Dinosaurs. It was the top predator in its home, and scientists have even found evidence that it sometimes ate other Majungasaurus!1 2

生存年代

72 到 66 百萬年前5

白堊紀晚期

化石發現地

Maevarano Formation, Mahajanga Province, northwestern Madagascar1 2

長度

6 到 7 m (20 到 23 ft)2

體重

750 kg 到 1.1 公噸 (1,700 到 2,400 lb)1 3

高度

2.2 m (7.2 ft)

估計值

最高速度

時速約 37 公里（23 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 55 隻狗一樣重

跟 7 隻狗從鼻子接到尾巴一樣長跟 39 根香蕉頭尾相接一樣長跟 220 顆西瓜一樣重跟 58 個幼兒園小朋友一樣重跟 34 個小學生一樣重跟 2.5 隻北極熊一樣重能在 9.7 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Majungasaurus 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)

Majungasaurus 時速約 37 公里 (23 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

Majungasaurus lived about 70 to 66 million years ago, during the very end of the Cretaceous Period. It was one of the last non-avian dinosaurs before the big extinction.1

This dinosaur had a thick, bumpy skull with a single rounded horn on top of its head. The horn was made of bone and was probably used for head-butting or showing off.1 2

Majungasaurus was about 6 to 7 metres long, which is as long as a big school bus. It was a medium-sized theropod, not as huge as T. rex but still a fierce hunter.2

Fossils show that Majungasaurus sometimes ate other Majungasaurus. Tooth marks on its bones match its own teeth, making it one of the few dinosaurs known to have been cannibalistic.2

It shared its home with many other animals, including the long-necked sauropod Rapetosaurus, the small meat-eater Masiakasaurus, and giant crocodile-like creatures.1

The first Majungasaurus fossils were found in 1895 by French explorers. At first, scientists thought it was a kind of Megalosaurus, and later it was even called Majungatholus.1 2

Majungasaurus is one of the best-known meat-eating dinosaurs from the southern continents. Many complete skulls and skeletons have been found, so scientists know a lot about it.2

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

?How big was Majungasaurus?

Majungasaurus was about 6 to 7 metres long (20 to 23 feet) and weighed around 750 to 1,100 kilograms (1,650 to 2,430 pounds). Some larger individuals may have reached over 8 metres (26 feet).1

?Did Majungasaurus eat other dinosaurs?

Yes, it mainly hunted sauropods like Rapetosaurus. It also ate other Majungasaurus, making it one of the few dinosaurs known to be cannibalistic.1 4

?When did Majungasaurus live?

Majungasaurus lived about 70 to 66 million years ago, at the very end of the Cretaceous Period. It was one of the last non-avian dinosaurs before the big extinction.1

?Did Majungasaurus have a horn?

Yes, it had a single rounded horn on top of its skull, made of bone. Scientists think it might have been used for head-butting or showing off.1

?Was Majungasaurus bigger than T. rex?

No, Majungasaurus was much smaller. T. rex was about 12 metres long and weighed over 8 tonnes, while Majungasaurus was only about 6 to 7 metres long and weighed around 1 tonne.1

?Where was Majungasaurus found?

All Majungasaurus fossils have been found in northwestern Madagascar, in the Maevarano Formation. The first remains were discovered along the Betsiboka River in 1896.1

?Did Majungasaurus have feathers?

No one knows for sure. No feather impressions have been found with Majungasaurus fossils, and it belonged to a group of dinosaurs (abelisaurids) that are not known to have had feathers.1

?Is Majungasaurus a dinosaur?

Yes, Majungasaurus is a dinosaur. It is a theropod dinosaur, which means it was a meat-eating, two-legged dinosaur.1

迷思破解王

迷思： Some people think Majungasaurus was a type of tyrannosaur like T. rex.

真相： Majungasaurus was actually an abelisaurid, a different group of meat-eating dinosaurs that lived mainly in the southern continents. It had a shorter, deeper skull and tiny arms, but it was not closely related to T. rex.1 2

給恐龍專家

學名: Majungasaurus
命名者: Lavocat 19555
類群: 肉食恐龍
科 / 演化支: Abelisauridae5
分類: Theropoda > Ceratosauria > Abelisauridae5
岩石的年代: 72 到 66 百萬年 (Maastrichtian)5
岩層: Maevarano5
國家: 馬達加斯加5
化石紀錄: The Paleobiology Database 收錄 25 筆5
又名: Majungatholus （舊名稱現在也算作同一種動物）5
發現: The first fossils of Majungasaurus were discovered in 1895 in Madagascar by French explorers. It was named Majungasaurus by French paleontologist René Lavocat in 1955, after the Mahajanga region where it was found.1 5
仍有爭議: Scientists are not sure exactly how the single horn on Majungasaurus's head was used. It might have been for fighting rivals, attracting mates, or both.1