恐龍卡第 0389 張，共 2 027 張

Chaohusaurus

名字的意思： “lake Chao Hu lizard”1

吃：肉魚龍類三疊紀早期到三疊紀中期嚴格來說不是恐龍

Chaohusaurus was an early marine reptile that lived in the sea, not a dinosaur. It looked a bit like a lizard with flippers and a long tail, and it was one of the smallest ichthyosaurs ever found.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3

三疊紀早期到三疊紀中期

化石發現地

Chaohu and Yuan'an, China1

長度

0.7 到 1 m (2.3 到 3.3 ft)1

體重

1.3 kg 到 3.1 kg (3 到 7 lb)1

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）

Chaohusaurus 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)

Chaohusaurus 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

Chaohusaurus gave birth to live babies in the water, not eggs on land. One fossil shows a mother with two embryos and a newborn inside her.1

Unlike later ichthyosaurs, Chaohusaurus babies were born head-first. This is different from most modern sea reptiles that give birth tail-first.1

Chaohusaurus was very small, only about as long as a yardstick (0.7 to 1 metre). It weighed as little as a bag of sugar (1.3 to 3.1 kg).1

It had different-shaped teeth in its mouth: sharp ones in the front and round, blunt ones in the back for crushing shells.1

Chaohusaurus lived during the Early Triassic period, about 251 to 247 million years ago, when the first dinosaurs were just starting to appear on land.1

Its fossils were first found in 1972 when workers were building a railway in China.1

Chaohusaurus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Chaohusaurus 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: Chaohusaurus
命名者: Young and Dong 19723
類群: 魚龍類
科 / 演化支: Grippiidae3
分類: Ichthyosauria > Ichthyosauromorpha3
岩石的年代: 251 到 237 百萬年 ()3
岩層: Nanlinghu3
國家: 中國3
化石紀錄: The Paleobiology Database 收錄 9 筆3
又名: Anhuisaurus （舊名稱現在也算作同一種動物）3
發現: Chaohusaurus was named by Chinese scientists Yang Zhongjian and Dong Zhiming in 1972, based on a partial skeleton found during railway construction near Chaohu Lake, China.1
仍有爭議: Scientists still debate whether Chaohusaurus is the most primitive ichthyosaur or if it belongs just outside the group Ichthyopterygia.1