恐龍卡第 1346 張，共 2 027 張

Pakisaurus

名字的意思： “Pakistan lizard”1

吃：植物長脖子恐龍白堊紀晚期

Pakisaurus was a huge, long-necked plant-eater that lived in what is now Pakistan and India. It had slender legs and a very tall tail, and its teeth were narrow and slightly curved, like little daggers for snipping leaves.1 2

生存年代

72 到 66 百萬年前5

白堊紀晚期

化石發現地

Balochistan, Pakistan and Gujarat, India1 1

長度

10 m (33 ft)1

體重

6 公噸到 12 公噸 (13,200 到 26,500 lb)4 3

高度

4 m (13 ft)3

最高速度

時速約 16 公里（10 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 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 8 台汽車一樣重跟 2400 顆西瓜一樣重跟 15 整班小學生一樣重跟 27 隻北極熊一樣重能在 22 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Pakisaurus 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)

Pakisaurus 時速約 16 公里 (10 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

Pakisaurus is a titanosaur, a group of sauropods that had bony plates (osteoderms) embedded in their skin.1

Its tail vertebrae were all procoelous, meaning the front of each bone was hollow like a socket, making the tail flexible and strong.1

Pakisaurus had a large braincase with a D-shaped bump (occipital condyle) where the skull attached to the neck.1

Its teeth were unusual: they were long, slender, and almost the same thickness from base to tip, unlike the cone-shaped teeth of many other titanosaurs.1

Fossils of Pakisaurus have been found in the Vitakri Formation in Pakistan, which is about 72 to 66 million years old, right before the dinosaurs went extinct.1 2

Scientists think Pakisaurus had long, slender legs, which made it a gracile (lightly built) titanosaur compared to its chunkier relatives.1

Pakisaurus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Pakisaurus 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。

給恐龍專家

學名: Pakisaurus
命名者: Malkani 20045
類群: 長脖子恐龍
科 / 演化支: Pakisauridae5
分類: Sauropodomorpha > Sauropoda > Titanosauria > Macronaria5
岩石的年代: 72 到 66 百萬年 (Maastrichtian)5
岩層: Vitakri, Lameta5
國家: 巴基斯坦, 印度5
化石紀錄: The Paleobiology Database 收錄 12 筆5
發現: Pakisaurus was named by Pakistani paleontologist Muhammad Sadiq Malkani in 2004, based on fossils found in the Vitakri Formation of Balochistan, Pakistan.1 1
仍有爭議: Scientists are not sure exactly how big Pakisaurus was, because only partial skeletons have been found. The length estimate of 10 metres is based on comparisons with other titanosaurs.1