恐龍卡第 1129 張，共 2 027 張

Mamenchisaurus

名字的意思： “Mamenchi lizard”6

吃：植物長脖子恐龍侏羅紀中期到白堊紀早期

Mamenchisaurus was a giant plant-eater with the longest neck of any known animal. Its neck was so long that it could look into second-story windows without even trying!1

生存年代

168 到 113 百萬年前6

侏羅紀中期到白堊紀早期

化石發現地

China (Sichuan, Gansu, Yunnan), Mongolia, and Thailand6 2

長度

13 到 22 m (43 到 72 ft)2 1

體重

45 公噸 (99,200 lb)1

高度

3.5 m (11 ft)1

最高速度

時速約 9 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 8 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 9000 顆西瓜一樣重跟 56 整班小學生一樣重跟 100 隻北極熊一樣重能在 40 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Mamenchisaurus 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)

Mamenchisaurus 時速約 9 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

Mamenchisaurus had 19 neck bones, more than any other dinosaur. Its neck was longer than its body and tail combined.1

The first Mamenchisaurus fossil was found near a ferry crossing on the Mamenchi River in Sichuan, China.2

Mamenchisaurus lived during the Late Jurassic and Early Cretaceous periods, about 168 to 113 million years ago.6

A complete skeleton of Mamenchisaurus hochuanensis was discovered in Hechuan County, Sichuan, and is the most complete sauropod ever found in China.1

Mamenchisaurus had a small head and spoon-shaped teeth, perfect for stripping leaves from branches.1

Some Mamenchisaurus fossils were found in red mudstone, which suggests they lived near rivers or lakes.1

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

?How big was Mamenchisaurus?

Most species were 15 to 26 metres (49 to 85 ft) long, possibly up to 35 metres (115 ft). It weighed about 12 tonnes (13 tons).3 4

?How long was its neck?

Its neck was up to 15 metres (49 ft) long, the longest of any known dinosaur. That is longer than a school bus.5 4

?What did Mamenchisaurus eat?

It was a plant-eater that ate conifers, ferns, cycads and other plants. It swallowed leaves whole and may have used stomach stones to help digest them.4

?When did Mamenchisaurus live?

It lived during the Late Jurassic Period, from about 161 to 145 million years ago. One species lived even later, in the Early Cretaceous.3 4

?Where was Mamenchisaurus found?

Fossils have been found in China, mostly in Sichuan and Xinjiang. The first one was discovered near the Mamenchi River in Sichuan.3 4

?Why did Mamenchisaurus have such a long neck?

The long neck probably helped it reach leaves high in trees or eat soft plants in wetlands without going into the water. It might also have been used for showing off to mates.4 5

?Was Mamenchisaurus bigger than T. rex?

Yes, Mamenchisaurus was much longer and heavier than T. rex. It could be up to 35 metres (115 ft) long, while T. rex was only about 12 metres (40 ft).3

?Did Mamenchisaurus have feathers?

No, Mamenchisaurus was a sauropod, and no sauropod fossils have ever been found with feathers. It had scaly skin like modern reptiles.3

迷思破解王

迷思： Many people think Mamenchisaurus used its long neck like a giraffe to reach high treetops.

真相： Scientists think Mamenchisaurus probably kept its neck low and ate soft plants near the ground or in shallow water, because its neck bones were not very flexible.1

給恐龍專家

學名: Mamenchisaurus
命名者: Young 19546
類群: 長脖子恐龍
科 / 演化支: Mamenchisauridae6
分類: Sauropodomorpha > Sauropoda6
岩石的年代: 168 到 113 百萬年 (Bathonian / Aptian)6
岩層: Shaximiao, Ulan Malgait, Xiangtang6
國家: 中國, 蒙古, 泰國6
化石紀錄: The Paleobiology Database 收錄 24 筆6
發現: Chinese paleontologist Yang Zhongjian (also known as C. C. Young) named Mamenchisaurus in 1954 based on a partial skeleton found near Yibin, Sichuan. The first complete skeleton of a larger species, M. hochuanensis, was dug up in Hechuan County in the 1970s.6 1
仍有爭議: Scientists still debate exactly how many species of Mamenchisaurus existed, because many fossils are incomplete and hard to compare.1