恐龍卡第 0125 張，共 2 027 張

Antarctosaurus

名字的意思： “southern lizard”1

吃：植物長脖子恐龍白堊紀晚期

Antarctosaurus was a giant, long-necked plant-eater that lived in South America during the Late Cretaceous. It was a titanosaur, one of the biggest land animals ever, with a small head and a huge body.1 2

生存年代

90 到 66 百萬年前3

白堊紀晚期

化石發現地

Argentina, Brazil, India, and Uruguay3 1

長度

17 到 18 m (56 到 59 ft)1 2

體重

34 公噸 (75,000 lb)1

高度

4.57 m (15 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 6 頭大象一樣重

跟 4 台汽車排成一排一樣長跟 100 根香蕉頭尾相接一樣長跟 6800 顆西瓜一樣重跟 42 整班小學生一樣重跟 76 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）

Antarctosaurus 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)

Antarctosaurus 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

The name Antarctosaurus does not mean it lived in Antarctica. It comes from Greek words meaning 'opposite of north' and 'lizard', because it was found in the southern part of the world.1

One species, Antarctosaurus giganteus, had thigh bones (femurs) that were 2.35 metres (7.7 feet) long. That is taller than most humans!1

Scientists are not sure if all the bones of Antarctosaurus wichmannianus belong to the same animal. Some might be from different dinosaurs mixed together.1

The lower jaw of Antarctosaurus was squared off at the front, like a shovel. This helped it eat plants close to the ground or in water.1

Antarctosaurus lived about 84 to 78 million years ago, during the Late Cretaceous Period.2

Some fossils once called Antarctosaurus septentrionalis from India were later given their own name: Jainosaurus.1

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

?How big was Antarctosaurus?

The type species A. wichmannianus was about 17 metres (56 ft) long. The much larger A. giganteus may have reached 30 metres (98 ft) or more, but its size is hard to know because only a few bones have been found.1 2

?What did Antarctosaurus eat?

It was a herbivore, meaning it ate plants. Its squared-off lower jaw helped it scoop up low-growing plants or floating water plants.1 2

?Did Antarctosaurus live in Antarctica?

No. Despite its name, it was found in Argentina, South America. The name means 'southern lizard' because it lived in the southern part of the world.1

?How much did Antarctosaurus weigh?

Estimates vary a lot. A. wichmannianus may have weighed about 34 metric tons (37 short tons). A. giganteus might have weighed between 45 and 100 metric tons, but scientists are not sure because so few bones exist.1

?When did Antarctosaurus live?

It lived during the Late Cretaceous Period, about 84 to 78 million years ago.2

?Was Antarctosaurus bigger than T. rex?

Yes, it was much bigger. A. wichmannianus was about 17 metres (56 ft) long, while T. rex was only about 12 metres (40 ft) long. A. giganteus was even larger.1

迷思破解王

迷思： Antarctosaurus lived in Antarctica.

真相： Antarctosaurus was named for being a 'southern lizard', but its fossils have been found in South America and India, not Antarctica.1

給恐龍專家

學名: Antarctosaurus
命名者: Huene 19273
類群: 長脖子恐龍
科 / 演化支: Lithostrotia3
分類: Sauropodomorpha > Sauropoda > Titanosauria > Macronaria3
岩石的年代: 90 到 66 百萬年 (Coniacian / Maastrichtian)3
岩層: Lameta, Plottier, Anacleto3
國家: 印度, 阿根廷, 巴西, 烏拉圭3
化石紀錄: The Paleobiology Database 收錄 8 筆3
發現: The first fossils of Antarctosaurus were found in Argentina in 1912 by geologist Ricardo Wichmann. German paleontologist Friedrich von Huene named and described them in 1929.1
仍有爭議: Scientists still debate whether all the bones of the type species, Antarctosaurus wichmannianus, belong to the same dinosaur or are a mix of different species.1