恐龍卡第 0186 張，共 2 027 張

Atacamatitan

名字的意思： “Atacama Desert titan”1

吃：植物長脖子恐龍白堊紀晚期

Atacamatitan was a huge, long-necked plant-eater that lived in what is now the Atacama Desert in Chile. It is one of the most complete titanosaur dinosaurs ever found in that country.2

生存年代

100 到 66 百萬年前4

白堊紀晚期

化石發現地

Tolar Formation, near Conchi Viejo, Atacama Desert, Antofagasta Region, Chile2

長度

10 m (33 ft)3

體重

8 公噸到 16 公噸 (17,600 到 35,300 lb)1

高度

2.5 m (8.2 ft)

估計值

最高速度

時速約 14 公里（9 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 2.5 頭大象一樣重

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 11 台汽車一樣重跟 3200 顆西瓜一樣重跟 20 整班小學生一樣重跟 36 隻北極熊一樣重能在 26 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Atacamatitan 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)

Atacamatitan 時速約 14 公里 (9 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

Atacamatitan is known from a right femur, part of a humerus, two back vertebrae, tail vertebrae, ribs, and a possible sternum piece.2

Its fossils were found in a small area of only 2 square metres, and they all belong to one individual.2

This dinosaur lived during the Late Cretaceous period, between about 100 and 66 million years ago.3

Atacamatitan is a titanosaur, a group of sauropods that includes some of the heaviest land animals ever.1

The discovery of Atacamatitan helped confirm that the red sandstones of the Tolar Formation are from the Cretaceous, not the Paleocene.2

Its femur has a unique shape: the shaft gets gradually narrower until two-thirds of its length.2

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

?How big was Atacamatitan?

Nobody knows for sure. Paleontologist Thomas Holtz estimated its weight between 8 and 16 tonnes (about 8,000 to 16,000 kg).1

?Where was Atacamatitan found?

Its fossils were discovered in the Atacama Desert in northern Chile, near the town of Conchi Viejo.1

?What did Atacamatitan eat?

It was a plant-eater, like all sauropods.1

給恐龍專家

學名: Atacamatitan
命名者: Kellner et al. 20114
類群: 長脖子恐龍
科 / 演化支: Lithostrotia4
分類: Sauropodomorpha > Sauropoda > Titanosauria > Macronaria4
岩石的年代: 100 到 66 百萬年 (Cenomanian / Maastrichtian)4
岩層: Tolar4
國家: 智利4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Atacamatitan was discovered during expeditions in 2000 and 2001 by Chilean and Brazilian researchers. It was named and described by Alexander Kellner and colleagues in 2011.1 2
仍有爭議: Scientists are not sure about the exact size of Atacamatitan because only partial bones have been found.3