恐龍卡第 0399 張，共 2 027 張

Chensaurus

吃：肉魚龍類三疊紀早期到三疊紀中期嚴格來說不是恐龍

Chensaurus was an early ichthyosaur, a marine reptile that swam in the seas during the Triassic Period. It had a long, narrow body and a small tail fin, and it moved through the water like an eel. It was not a dinosaur, but a distant relative of lizards and snakes.1

趣味小知識：這種海生爬蟲類在海裡游泳的時候，恐龍正在陸地上走路。大家都叫牠們恐龍，但牠們其實是爬蟲類的另一個分支。

生存年代

251 到 237 百萬年前4

三疊紀早期到三疊紀中期

化石發現地

Fossils of Chensaurus were found in Anhui Province, China.4

長度

最多 1 m (3.3 ft)2

體重

1.3 kg 到 3.1 kg (3 到 7 lb)3

最高速度

時速約 14 公里（9 英里）

游泳, 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？

牠有多重？

跟 26 根香蕉一樣重

跟 2 隻家貓從鼻子接到尾巴一樣長跟 6 根香蕉頭尾相接一樣長大約跟一隻家貓一樣重跟 26 根香蕉一樣重能在 13 秒內游完一座大泳池（50 公尺）

Chensaurus 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)

Chensaurus 時速約 14 公里 (9 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

Chensaurus is one of the oldest known ichthyosaurs, living about 250 million years ago.4

It had a long, narrow body and a small caudal fin, which suggests it swam like an eel, not like a fish.1

Chensaurus had a high number of vertebrae in its body, which helped it move in a wavy, eel-like way.1

It is considered an evolutionary intermediate between land reptiles and later, more fish-like ichthyosaurs.1

The name Chensaurus was given in 1991, but some scientists think it is the same as another ichthyosaur called Chaohusaurus.2

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

?How big was Chensaurus?

Chensaurus was small, about 0.7 to 1 metre (2.3 to 3.3 feet) long and weighed 1.3 to 3.1 kilograms (2.9 to 6.8 pounds).3

?What did Chensaurus eat?

Chensaurus was a carnivore that ate meat, probably shellfish and small sea creatures. Its back teeth were bulbous for crushing shells.3

?When did Chensaurus live?

Chensaurus lived during the Early Triassic Period, about 250 million years ago.3

?Is Chensaurus a dinosaur?

No, Chensaurus is not a dinosaur. It is an ichthyosaur, a marine reptile that is a distant relative of lizards and snakes.3

迷思破解王

迷思： Chensaurus was a dinosaur.

真相： Chensaurus was an ichthyosaur, a marine reptile, not a dinosaur. Ichthyosaurs lived in the sea and were more closely related to lizards and snakes.1

給恐龍專家

學名: Chensaurus
命名者: Mazin Suteethora et al. 19914
類群: 魚龍類
科 / 演化支: Grippiidae4
分類: Ichthyosauria > Ichthyosauromorpha4
岩石的年代: 251 到 237 百萬年 ()4
國家: 中國4
化石紀錄: The Paleobiology Database 收錄 9 筆4
發現: Chensaurus was named by Mazin Suteethora and colleagues in 1991. The fossils were found in Anhui Province, China.4 4
仍有爭議: Scientists debate whether Chensaurus is a separate genus or just a younger name for Chaohusaurus, because the fossils are very similar.2