恐龍卡第 0296 張，共 2 027 張

Brachiosaurus

名字的意思： “arm lizard”1

吃：植物長脖子恐龍侏羅紀晚期到白堊紀早期

Brachiosaurus was a giant, long-necked dinosaur that ate plants. It had front legs that were longer than its back legs, like a giraffe. This helped it reach high into trees to munch on leaves.1

生存年代

158 到 143 百萬年前3

侏羅紀晚期到白堊紀早期

化石發現地

Colorado, Oklahoma, Utah, and Wyoming, USA; also Tanzania, Zimbabwe, and Germany3

長度

18 到 22 m (59 到 72 ft)1

體重

28.3 公噸到 46.9 公噸 (62,400 到 103,400 lb)1

高度

9 m (30 ft)1

最高速度

時速約 10 公里（6 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？

牠有多重？

跟 8 頭大象一樣重

跟 5 台汽車排成一排一樣長跟 120 根香蕉頭尾相接一樣長跟 9400 顆西瓜一樣重比長頸鹿還高跟 59 整班小學生一樣重跟 100 隻北極熊一樣重高到能從 4 樓的窗戶往裡看能在 36 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Brachiosaurus 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)

Brachiosaurus 時速約 10 公里 (6 mph)

騎腳踏車的小朋友 時速約 12 公里 (7 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

Brachiosaurus had front legs that were longer than its back legs, which is unusual for sauropods. This gave it a sloping back like a giraffe.1

It could reach food up to 9 meters (30 feet) off the ground, higher than most other dinosaurs.1

Brachiosaurus had air sacs in its neck and body that made it lighter. These sacs were connected to its lungs.1

The first Brachiosaurus fossil was found in 1900 near Fruita, Colorado, USA. It was named by Elmer S. Riggs in 1903.1

Many pictures of Brachiosaurus are actually based on a different dinosaur called Giraffatitan, which lived in Africa.1

Brachiosaurus lived during the Late Jurassic period, about 155 to 145 million years ago.1

Scientists think Brachiosaurus ate about 200 to 400 kilograms (440 to 880 pounds) of plants every day.1

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

?How big was Brachiosaurus?

Brachiosaurus was about 18 to 22 metres (59 to 72 feet) long and weighed between 28.3 and 46.9 metric tons (31.2 to 51.7 short tons).1

?What did Brachiosaurus eat?

Brachiosaurus was a plant-eater that ate leaves from tall trees like conifers, ginkgos, and tree ferns. It swallowed its food whole without chewing.2 1

?When did Brachiosaurus live?

Brachiosaurus lived during the Late Jurassic period, about 155 to 145 million years ago.2 1

?Where was Brachiosaurus found?

Brachiosaurus fossils were found in North America, in Colorado, USA. The first one was discovered near Fruita, Colorado in 1900.2 1

?Was Brachiosaurus bigger than T. rex?

Yes, Brachiosaurus was much bigger than T. rex. It was about 18 to 22 meters long and weighed up to 46.9 metric tons, while T. rex was smaller.1

?Did Brachiosaurus have feathers?

No, Brachiosaurus did not have feathers. It was a sauropod dinosaur with scaly skin, like other large plant-eaters of its time.1

?How fast could Brachiosaurus run?

Probably only about 10 km/h (6 mph) at its fastest, a bit slower than a kid running fast. This is a Dino Wiki estimate from its size: Brachiosaurus was so big and heavy that it could not really run, it walked.1

?Why did Brachiosaurus have a long neck?

Brachiosaurus had a long neck to reach high into trees and eat leaves that other dinosaurs could not reach, up to 9 metres (30 feet) off the ground.2 1

?Is Brachiosaurus a dinosaur?

Yes, Brachiosaurus is a dinosaur. It is a type of sauropod dinosaur that lived during the Late Jurassic period.2 1

?Could Brachiosaurus swim?

Scientists are not sure if Brachiosaurus could swim, but its large body and long neck would have made swimming difficult. It probably stayed on land.1

迷思破解王

迷思： Brachiosaurus could rear up on its hind legs like other sauropods.

真相： Unlike many sauropods, Brachiosaurus was not built to rear up on its hind legs because of its long front legs and short tail.1

給恐龍專家

學名: Brachiosaurus
命名者: Riggs 19033
類群: 長脖子恐龍
科 / 演化支: Brachiosauridae3
分類: Sauropodomorpha > Sauropoda > Macronaria3
岩石的年代: 158 到 143 百萬年 ()3
岩層: Morrison, Tendaguru, Kadzi3
國家: 美國, 坦尚尼亞, 辛巴威, 德國3
化石紀錄: The Paleobiology Database 收錄 20 筆3
發現: Brachiosaurus was discovered in 1900 by Elmer S. Riggs and his crew in the Colorado River valley near Fruita, Colorado. Riggs named it Brachiosaurus altithorax in 1903.1
仍有爭議: Scientists still debate whether Brachiosaurus was warm-blooded or cold-blooded. Its huge size makes it hard to tell.1