恐龍卡第 0034 張，共 2 027 張

Aerosteon

名字的意思： “air bone”1

吃：肉肉食恐龍白堊紀晚期

Aerosteon was a big, meat-eating dinosaur that lived in what is now Argentina. It had hollow bones filled with air, just like birds have today. This helped it breathe in a special way and made its skeleton lighter.2

生存年代

84 到 72 百萬年前4

白堊紀晚期

化石發現地

Mendoza Province, Argentina1 2

長度

9 到 10 m (30 到 33 ft)2

體重

500 kg 到 1 公噸 (1,100 到 2,200 lb)1 3

最高速度

時速約 39 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？

牠有多重？

跟 50 隻狗一樣重

跟 2 台汽車排成一排一樣長跟 56 根香蕉頭尾相接一樣長跟 200 顆西瓜一樣重跟 53 個幼兒園小朋友一樣重跟 31 個小學生一樣重跟 2 隻北極熊一樣重能在 9.2 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Aerosteon 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)

Aerosteon 時速約 39 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

Aerosteon had air sacs inside its bones, like modern birds. These air sacs helped it breathe more efficiently.2

Its furcula (wishbone) and ilium (hip bone) were hollowed out by air sacs. In birds, these bones are connected to air sacs that help pump air through the lungs.2

Aerosteon lived about 84 million years ago, during the Late Cretaceous period.2

The first fossils of Aerosteon were found in 1996, but the dinosaur was not named until 2008.1

Aerosteon was a megaraptoran, a group of predatory dinosaurs that were common in South America.4

Its name means 'air bone' because of the many air-filled spaces in its skeleton.1

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

?How big was Aerosteon?

Scientists disagree on its size. Early estimates said 9 to 10 metres (30 to 33 ft) long, but later estimates range from 6 metres (20 ft) to 7.5 metres (25 ft) and weigh about 500 kg to 1 metric ton.1

?Did Aerosteon have feathers?

No fossil feathers have been found with Aerosteon, so nobody knows for sure. It was a megaraptoran dinosaur, and some close relatives may have had simple feathers, but there is no direct evidence.1

?What did Aerosteon eat?

Aerosteon was a meat-eater. It ate other animals, though no one knows exactly which ones.1

?Could Aerosteon fly?

No, Aerosteon could not fly. It was a large, two-legged dinosaur that walked on the ground.1

?When did Aerosteon live?

Aerosteon lived about 84 million years ago, during the Late Cretaceous period.1 2

?Why is Aerosteon called air bone?

Its name means 'air bone' because its skeleton had many air-filled spaces, like the hollow bones of modern birds.1

給恐龍專家

學名: Aerosteon
命名者: Sereno et al. 20084
類群: 肉食恐龍
科 / 演化支: Megaraptoridae4
分類: Theropoda > Megaraptora4
岩石的年代: 84 到 72 百萬年 (Campanian)4
岩層: Anacleto4
國家: 阿根廷4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Aerosteon was named by paleontologist Paul Sereno and his team in 2008. The fossils were found in the Anacleto Formation in Argentina, near the Rio Colorado river.4 1
仍有爭議: Scientists are not sure exactly where Aerosteon fits on the dinosaur family tree. Some think it is a megaraptoran, while others link it to allosauroids from the Jurassic.2