恐龍卡第 0766 張，共 2 027 張

Guizhouichthyosaurus

名字的意思： “Guizhou lizard fish”1

吃：肉魚龍類三疊紀中期到三疊紀晚期嚴格來說不是恐龍

Guizhouichthyosaurus was a giant marine reptile that swam in the seas of what is now China during the Triassic Period. It looked like a dolphin but was much bigger, with a long snout and a tail that bent downward at the tip. This apex predator ate other large marine reptiles, even though its teeth were small and smooth.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

241 到 227 百萬年前5

三疊紀中期到三疊紀晚期

化石發現地

Guizhou Province, China (Xiaowa Formation and Zhuganpo Formation)1 2

長度

5 到 6 m (16 到 20 ft)1

體重

914 kg 到 1.404 公噸 (2,000 到 3,100 lb)1 3

最高速度

時速約 45 公里（28 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 70 隻狗一樣重

跟 6 隻狗從鼻子接到尾巴一樣長跟 33 根香蕉頭尾相接一樣長跟 280 顆西瓜一樣重跟 74 個幼兒園小朋友一樣重跟 44 個小學生一樣重跟 3 隻北極熊一樣重能在 4 秒內游完一座大泳池（50 公尺）

Guizhouichthyosaurus 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)

Guizhouichthyosaurus 時速約 45 公里 (28 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

One fossil of Guizhouichthyosaurus had the remains of a thalattosaur (another marine reptile) inside its stomach, showing it was an apex predator.1

Its teeth were small and smooth, not sharp like steak knives, so it probably grabbed prey and swallowed it whole.1

Guizhouichthyosaurus swam like an eel, wiggling its whole body, unlike later ichthyosaurs that swam more like tuna.1

Scientists think there were two different body shapes (morphotypes) of this species, possibly males and females.1

It lived about 239 to 227 million years ago, during the Middle and Late Triassic.2

Some scientists once thought Guizhouichthyosaurus was the same as Shastasaurus, but now most agree it is its own genus.1

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

?How big was Guizhouichthyosaurus?

About 5 metres (16 feet) long, with some specimens over 6 metres (20 feet).1

?What did Guizhouichthyosaurus eat?

It ate other large marine reptiles, like the thalattosaur Xinpusaurus. One fossil had a thalattosaur in its stomach, showing it was an apex predator.1 4

?Was Guizhouichthyosaurus a dinosaur?

No, it was an ichthyosaur, a marine reptile that lived in the sea. It was not a dinosaur.1

?How did Guizhouichthyosaurus swim?

It swam like an eel, wiggling its whole body, unlike later ichthyosaurs that swam more like tuna.1

迷思破解王

迷思： Guizhouichthyosaurus had huge, sharp teeth like a T. rex.

真相： Its teeth were actually small and smooth, more like pegs, and it used them to grip prey rather than slice it.1

給恐龍專家

學名: Guizhouichthyosaurus
命名者: 不明5
類群: 魚龍類
科 / 演化支: Shastasauridae5
分類: Ichthyosauria > Ichthyosauria > Ichthyosauromorpha > Ichthyosauromorpha5
岩石的年代: 241 到 227 百萬年 (Ladinian / Carnian)5
岩層: Xiaowa, Falang, Wayao5
國家: 中國5
化石紀錄: The Paleobiology Database 收錄 8 筆5
發現: The first fossils were named by Y. Cao and Y. Luo in 2000, based on a well-preserved skeleton missing its hips and tail tip.1
仍有爭議: Scientists still debate whether Guizhouichthyosaurus is really a separate genus from Shastasaurus or just a species of it.1