恐龍卡第 0087 張，共 2 027 張

Amargasaurus

名字的意思： “lizard of La Amarga”1

吃：植物長脖子恐龍白堊紀早期

Amargasaurus was a sauropod with a very unusual back. It had long, sharp spines sticking up from its neck and back, like a row of spikes. Scientists think these spikes might have been used for defense or to impress other Amargasaurus.1

生存年代

126 到 121 百萬年前6

白堊紀早期

化石發現地

La Amarga Formation, Neuquén Province, Argentina6 1

長度

9 到 13 m (30 到 43 ft)2

體重

2.5 公噸到 4 公噸 (5,500 到 8,800 lb)2 4

高度

2.5 到 2.7 m (8.2 到 8.9 ft)2 3

最高速度

時速約 21 公里（13 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 2.5 台汽車一樣重

跟 3 台汽車排成一排一樣長跟 72 根香蕉頭尾相接一樣長跟 200 隻狗一樣重跟 800 顆西瓜一樣重跟 5 整班小學生一樣重跟 9 隻北極熊一樣重能在 17 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Amargasaurus 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)

Amargasaurus 時速約 21 公里 (13 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

Amargasaurus had very long, sharp spines on its neck and back vertebrae. These spines were much longer than those of its relative Dicraeosaurus.1

The spines on its neck were so long that they probably stuck out like a sail or a row of spikes. Scientists think they could have been used for defense or to show off to other Amargasaurus.1

Amargasaurus was a dicraeosaurid, a family of sauropods with shorter necks than other long-necked dinosaurs. Its closest relatives include Dicraeosaurus and Bajadasaurus.6

The only known skeleton of Amargasaurus is mostly complete. It includes the back of the skull, most of the backbone, and parts of the legs and hips.1

Amargasaurus lived about 125 to 121 million years ago, during the Early Cretaceous period. That is about 15 to 20 million years after its African relative Dicraeosaurus.6 1

Scientists think Amargasaurus could not rear up on its hind legs like some other sauropods. Its legs were built for slow, steady walking, not speed.1

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

?How big was Amargasaurus?

Amargasaurus was about 9 to 13 metres long and weighed around 2.5 to 4 metric tons. That is small for a sauropod.2 5

?What did Amargasaurus eat?

Amargasaurus was a herbivore that ate tough plants. It had pencil-like teeth for grinding and chewing.5 2

?When did Amargasaurus live?

Amargasaurus lived during the Early Cretaceous period, about 130 to 120 million years ago.2 5

?Where was Amargasaurus found?

Amargasaurus was found in Argentina, in the La Amarga Formation of Neuquén Province. The only known skeleton was discovered in 1984.2 5

?Why did Amargasaurus have spines?

Scientists think the spines might have been used for display, combat, or defense. They could have supported a sail or been covered in horn.2 3

?Was Amargasaurus a dinosaur?

Yes, Amargasaurus was a dinosaur. It was a sauropod, a type of long-necked plant-eating dinosaur.2 5

?How fast could Amargasaurus run?

Scientists think Amargasaurus could not run fast. Its legs were built for slow, steady walking, not speed.2

?Is Amargasaurus bigger than T. rex?

Amargasaurus was longer than T. rex, reaching 9 to 13 metres, but it was much lighter, weighing only 2.5 to 4 metric tons.2

給恐龍專家

學名: Amargasaurus
命名者: Bonaparte 19846
類群: 長脖子恐龍
科 / 演化支: Dicraeosauridae6
分類: Sauropodomorpha > Sauropoda > Diplodocoidea6
岩石的年代: 126 到 121 百萬年 (Barremian)6
岩層: La Amarga6
國家: 阿根廷6
化石紀錄: The Paleobiology Database 收錄 2 筆6
發現: Amargasaurus was named by Argentine paleontologist José Bonaparte in 1984. The skeleton was found in the La Amarga Formation in Neuquén Province, Argentina.6 1
仍有爭議: Scientists are not sure exactly what the long spines on Amargasaurus's neck were used for. They might have been for defense, to attract mates, or to help control body temperature.1