恐龍卡第 0054 張，共 2 027 張

Alamosaurus

名字的意思： “Alamo lizard”1

吃：植物長脖子恐龍白堊紀晚期

Alamosaurus was a giant, long-necked plant-eater that stomped through what is now North America near the very end of the Age of Dinosaurs. It was one of the last big sauropods to ever live, and it may have traveled in herds.5 1

生存年代

84 到 66 百萬年前5

白堊紀晚期

化石發現地

New Mexico, Texas, and Utah in the USA, and Chihuahua in Mexico5 2

長度

21 m (69 ft)1

體重

30 公噸到 35 公噸 (66,100 到 77,200 lb)3

高度

5 m (16 ft)3

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 6 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 7000 顆西瓜一樣重跟 44 整班小學生一樣重跟 78 隻北極熊一樣重高到能從 2 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）

Alamosaurus 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)

Alamosaurus 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

Alamosaurus is the only sauropod from the Late Cretaceous that has been found in North America, making it a very special dinosaur.1

Its fossils come from rocks that are between about 83.6 and 66 million years old, so it lived right up to the end of the dinosaur era.2

Scientists think Alamosaurus lived in groups, because its bones are sometimes found together in large numbers.2

It was a ground-dwelling herbivore, meaning it walked on land and ate plants, not like some other long-necks that might have lived in water.5

Alamosaurus laid eggs, just like other dinosaurs, even though it was huge.2

The name 'Alamosaurus' comes from the Ojo Alamo Formation in New Mexico, where the first fossils were found, not from the Alamo mission in Texas.5

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

?How big was Alamosaurus?

About 26 metres (85 ft) long, 5 metres (16 ft) tall at the shoulder, and weighed up to 30 to 35 tonnes (33 to 39 short tons). Some specimens suggest it could have been even larger, possibly the largest dinosaur found in North America.3 1

?What did Alamosaurus eat?

It was an herbivore, meaning it ate plants. It had a long neck to reach high or low vegetation.1 3

?When did Alamosaurus live?

It lived during the Late Cretaceous period, about 70 to 66 million years ago, right up to the end of the Age of Dinosaurs.1 3

?Where was Alamosaurus found?

Fossils have been found in the southwestern United States, including New Mexico, Texas, Utah, and Wyoming. The first fossils came from the Ojo Alamo Formation in New Mexico.3 4

?Is Alamosaurus a dinosaur?

Yes, it is a dinosaur. It belongs to the group called sauropods, which were large, long-necked, plant-eating dinosaurs.1 3

?Was Alamosaurus bigger than T. rex?

Yes, much bigger. Alamosaurus was about 26 metres (85 ft) long and weighed up to 35 tonnes, while T. rex was about 12 metres (40 ft) long and weighed around 8 tonnes.3

?Did Alamosaurus have any armor?

Yes, its body was partly covered with bony armor called osteoderms, which acted like a protective shield.3

?How did Alamosaurus get to North America?

Scientists think it may have migrated from South America or Asia, because no other sauropods lived in North America for about 30 million years before Alamosaurus appeared.3 4

迷思破解王

迷思： Some people think Alamosaurus lived in water because it was a sauropod, but that's not true.

真相： Alamosaurus was a ground-dwelling dinosaur, and its bones show it was adapted for life on land.2

給恐龍專家

學名: Alamosaurus
命名者: Gilmore 19225
類群: 長脖子恐龍
科 / 演化支: Saltasauridae5
分類: Sauropodomorpha > Sauropoda > Titanosauria > Macronaria5
岩石的年代: 84 到 66 百萬年 (Campanian / Maastrichtian)5
岩層: Ojo Alamo, Javelina, North Horn5
國家: 美國, 墨西哥5
化石紀錄: The Paleobiology Database 收錄 38 筆5
發現: Alamosaurus was named by Charles W. Gilmore in 1922, based on fossils found in the Ojo Alamo Formation of New Mexico, USA.5 1
仍有爭議: Scientists still debate exactly how Alamosaurus is related to other titanosaurs, and whether some fossils from Mexico really belong to this genus.5