恐龍卡第 0244 張，共 2 027 張

Barosaurus

名字的意思： “heavy lizard”1

吃：植物長脖子恐龍侏羅紀晚期到白堊紀早期

Barosaurus was a giant, long-necked plant eater that lived about 150 million years ago. It was one of the biggest animals of its time, with a neck so long it could reach high into the trees. But it probably kept its head low and swept its neck like a vacuum cleaner to munch on plants.1 2

生存年代

158 到 143 百萬年前4

侏羅紀晚期到白堊紀早期

化石發現地

Fossils have been found in the United States (South Dakota, Utah, Montana, and possibly Colorado, Wyoming, and Oklahoma) and in Tanzania and Zimbabwe in Africa.1 2 4

長度

25 到 27 m (82 到 89 ft)1

體重

12 公噸到 20 公噸 (26,500 到 44,100 lb)1

高度

5.8 m (19 ft)

估計值

最高速度

時速約 13 公里（8 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 3 頭大象一樣重

跟 6 台汽車排成一排一樣長跟 150 根香蕉頭尾相接一樣長跟 13 台汽車一樣重跟 4000 顆西瓜一樣重跟 25 整班小學生一樣重跟 44 隻北極熊一樣重高到能從 2 樓的窗戶往裡看能在 28 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Barosaurus 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)

Barosaurus 時速約 13 公里 (8 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

Barosaurus had 16 neck bones, more than its close relatives Diplodocus and Apatosaurus, and some of those neck bones were up to 50% longer.1

Its tail made up about half of its total body length, even though its tail was shorter than Diplodocus's tail.1

Barosaurus had only 9 back bones, while Diplodocus and Apatosaurus had 10. Scientists think one back bone may have turned into a neck bone.1

A study from 2016 suggested that Barosaurus could bend its neck from side to side a lot, but not up and down much. So it probably fed on low plants, not high trees.1

Some scientists think a dinosaur this big would have needed a huge 1.6-ton heart, and maybe even extra 'helper hearts' in its neck to pump blood to its brain.1

Barosaurus lived alongside famous dinosaurs like Allosaurus, Stegosaurus, and Brontosaurus in the Morrison Formation.1

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

?How big was Barosaurus?

About 25 to 27 metres (82 to 89 feet) long and weighed 12 to 20 tonnes (13 to 22 short tons).1

?What did Barosaurus eat?

It was a plant eater (herbivore). It probably fed on low plants by sweeping its neck from side to side like a vacuum cleaner.1 2

?When did Barosaurus live?

It lived during the Late Jurassic period, about 152 to 150 million years ago.1

?Where was Barosaurus found?

Fossils have been found in the United States, especially in South Dakota, Utah, Montana, and possibly Colorado, Wyoming, and Oklahoma.1

?Is Barosaurus a dinosaur?

Yes, it is a dinosaur, a large sauropod dinosaur.1

?Was Barosaurus bigger than T. rex?

Yes, Barosaurus was much longer and heavier than Tyrannosaurus rex. Barosaurus reached 25 to 27 metres, while T. rex was about 12 metres long.1

?Did Barosaurus have feathers?

No one knows for sure, but no feathers have been found on Barosaurus fossils. A rare skin imprint shows scales, not feathers.3

?Could Barosaurus swim?

Probably not. It was a land animal with a long neck and tail, built for walking on land, not swimming.1

迷思破解王

迷思： Some people think Barosaurus is the same as Brontosaurus or Diplodocus.

真相： Barosaurus is a different genus, though it is closely related to Diplodocus. It had a longer neck and shorter tail than Diplodocus.1

給恐龍專家

學名: Barosaurus
命名者: Marsh 18904
類群: 長脖子恐龍
科 / 演化支: Diplodocidae4
分類: Sauropodomorpha > Sauropoda > Diplodocoidea4
岩石的年代: 158 到 143 百萬年 ()4
岩層: Morrison, Kadzi4
國家: 美國, 辛巴威4
化石紀錄: The Paleobiology Database 收錄 19 筆4
又名: Gigantosaurus （舊名稱現在也算作同一種動物）4
發現: The first Barosaurus fossils were found in 1889 in South Dakota by Isabella R. Ellerman, and then excavated by Othniel Charles Marsh and John Bell Hatcher. Marsh named it Barosaurus lentus in 1890.1
仍有爭議: Scientists still debate how Barosaurus held its neck and how blood reached its brain. Some think it held its neck low, while others think it could raise it high.1