恐龍卡第 1814 張，共 2 027 張

Tonganosaurus

名字的意思： “lizard from Tong'an”1

吃：植物長脖子恐龍侏羅紀早期

Tonganosaurus was a long-necked plant-eater that lived about 184 million years ago. It is one of the oldest known members of the mamenchisaurid family, which includes some of the longest-necked dinosaurs ever.1 2

生存年代

201 到 175 百萬年前3

侏羅紀早期

化石發現地

Tong'an Town, Sichuan, China1 2

長度

11.6 到 12 m (38 到 39 ft)1

高度

2.9 m (9.5 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

跟 2.5 台汽車排成一排一樣長跟 67 根香蕉頭尾相接一樣長能在 19 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Tonganosaurus 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)

Tonganosaurus 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

Tonganosaurus had a very long neck for its size, with neck bones shaped like those of Omeisaurus, another long-necked dinosaur.1

Its front legs were 80 percent as long as its back legs, which is a sign it was a more advanced sauropod.2

The thigh bone (femur) was straight and thick, and the shin bone (tibia) was 75 percent of its length.1

It lived in the Early Jurassic, about 184.5 million years ago, making it the oldest known mamenchisaurid by almost 15 million years.1

The only skeleton found was of an adult that was about 12 metres long, the length of a big bus.1

Its backbones (vertebrae) were solid and not hollow, which is a more primitive feature among sauropods.2

The fossils were discovered in 2007 by scientists from Chengdu University of Technology, after tips from local people.1

Tonganosaurus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Tonganosaurus 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: Tonganosaurus
命名者: Li et al. 20103
類群: 長脖子恐龍
科 / 演化支: Mamenchisauridae3
分類: Sauropodomorpha > Sauropoda3
岩石的年代: 201 到 175 百萬年 (Hettangian / Toarcian)3
岩層: Yimen3
國家: 中國3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Tonganosaurus was named by Li Kui, Yang Chun-Yan, Liu Jian, and Wang Zheng-Xin in 2010. The species name hei honors dinosaur scientist He Xinlu. The fossils were found in the Yimen Formation of Sichuan, China.1 2
仍有爭議: Scientists are still debating the exact age of the Yimen Formation, so the precise date of Tonganosaurus is not fully settled.1