恐龍卡第 1149 張，共 2 027 張

Maxakalisaurus

名字的意思： “Maxakali lizard, after the Maxakali tribe of Brazil”1

吃：植物長脖子恐龍白堊紀晚期

Maxakalisaurus was a huge, long-necked plant-eater that lived in Brazil during the Late Cretaceous. It had ridged teeth, which was unusual for sauropods, and some of its bones show teeth marks from scavengers.1

生存年代

84 到 66 百萬年前4

白堊紀晚期

化石發現地

Brazil (Minas Gerais)2 2

長度

13 m (43 ft)1

體重

5 公噸 (11,000 lb)3

高度

3.1 m (10 ft)

估計值

最高速度

時速約 19 公里（12 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 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大約跟一頭大象一樣重跟 1000 顆西瓜一樣重跟 6 整班小學生一樣重跟 11 隻北極熊一樣重能在 19 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Maxakalisaurus 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)

Maxakalisaurus 時速約 19 公里 (12 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

Maxakalisaurus is known from a partial skeleton that includes skull fragments and osteoderms, which are bony plates in the skin.1

Its teeth had ridges, a feature that is rare among sauropods.1

Some of its bones have teeth marks on them, suggesting that scavengers nibbled on the carcass after it died.1

It lived about 80 million years ago, during the Late Cretaceous period.1

The tail vertebrae of Maxakalisaurus were spool-shaped, meaning they were very concave on the sides.2

One of its mid-posterior tail bones had a biconvex centrum, meaning it was rounded on both ends like a ball.2

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

?How big was Maxakalisaurus?

It was about 12.1 metres (40 feet) long and weighed around 5 tonnes (5.5 short tons). That is about the length of a big bus.3 1

?What did Maxakalisaurus eat?

It was a plant-eater, so it ate leaves and other plants. Its ridged teeth helped it chew tough vegetation.1 3

?Did Maxakalisaurus have bony plates in its skin?

Yes, like many titanosaurs it had osteoderms, which are bony plates embedded in the skin. These may have offered protection.3 1

?When did Maxakalisaurus live?

It lived about 80 million years ago, during the Late Cretaceous period. Its fossils were found in Brazil.3 1

給恐龍專家

學名: Maxakalisaurus
命名者: Kellner et al. 20064
類群: 長脖子恐龍
科 / 演化支: Rinconsauria4
分類: Sauropodomorpha > Sauropoda > Titanosauria > Macronaria4
岩石的年代: 84 到 66 百萬年 (Campanian / Maastrichtian)4
岩層: Adamantina4
國家: 巴西4
化石紀錄: The Paleobiology Database 收錄 3 筆4
發現: Maxakalisaurus was named by Kellner and colleagues in 2006 based on a partial skeleton found in the Adamantina Formation of Brazil.2 2
仍有爭議: Scientists are still debating exactly where Maxakalisaurus fits in the sauropod family tree, with some placing it in Aeolosaurini and others in Rinconsauria.2