恐龍卡第 1194 張，共 2 027 張

Mixosaurus

名字的意思： “Mixed Lizard”1

吃：肉魚龍類三疊紀中期嚴格來說不是恐龍

Mixosaurus was an ancient marine reptile that swam in the seas about 250 to 240 million years ago. It had a long tail, a small fin on its back, and paddle-like limbs with five toes each. It was not a dinosaur, but an ichthyosaur, and it ate fish with its sharp teeth.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

247 到 237 百萬年前3

三疊紀中期

化石發現地

Italy, Switzerland, China, Germany, and the USA (Nevada)1 2

長度

0.73 到 2 m (2.4 到 6.6 ft)1

體重

2.2 kg 到 5.7 kg (5 到 13 lb)1

最高速度

時速約 18 公里（11 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 1.5 隻家貓一樣重

跟 4 隻家貓從鼻子接到尾巴一樣長跟 11 根香蕉頭尾相接一樣長大約跟一隻家貓一樣重跟 48 根香蕉一樣重能在 10 秒內游完一座大泳池（50 公尺）

Mixosaurus 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)

Mixosaurus 時速約 18 公里 (11 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

Mixosaurus is called 'Mixed Lizard' because it had features of both early eel-shaped ichthyosaurs and later dolphin-shaped ichthyosaurs.1

Its front limbs were longer than its back limbs, which is a trait of later ichthyosaurs.1

Mixosaurus had about 50 vertebrae in front of its hips, twice as many as land reptiles.1

The species Mixosaurus cornalianus is the only Triassic ichthyosaur known from completely articulated skeletons.1

Mixosaurus had a sagittal crest on its skull, which means it had very strong jaw muscles.1

Scientists think Mixosaurus lived near the shore because its bones were more spongy and compact than those of other ichthyosaurs.1

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

?How big was Mixosaurus?

Mixosaurus was a small ichthyosaur, measuring about 73 to 100 cm (2.40 to 3.28 ft) long and weighing 2.2 to 5.7 kg (4.9 to 12.6 lb). The largest specimens could reach over 2 m (6.6 ft) in length.1

?What did Mixosaurus eat?

Mixosaurus ate fish. It had narrow jaws with several sharp teeth that were ideal for catching fish.1

?Could Mixosaurus swim fast?

Mixosaurus probably was not a very fast swimmer. It had a long tail with a low fin, which suggests it was slower than later Jurassic ichthyosaurs.1

?Where did Mixosaurus live?

Mixosaurus lived in the warm, shallow seas of the Middle Triassic, about 250 to 240 million years ago. Its fossils have been found near the Italy, Switzerland border and in South China.1

?Is Mixosaurus a dinosaur?

No, Mixosaurus is not a dinosaur. It is an ichthyosaur, which is a type of extinct marine reptile that lived in the sea.1

?Why is it called Mixosaurus?

The name Mixosaurus means 'Mixed Lizard'. It was chosen because Mixosaurus appears to be a transitional form between early eel-shaped ichthyosaurs and later dolphin-shaped ichthyosaurs.1

給恐龍專家

學名: Mixosaurus
命名者: Baur 18873
類群: 魚龍類
科 / 演化支: Mixosauridae3
分類: Ichthyosauria > Ichthyosauromorpha3
岩石的年代: 247 到 237 百萬年 ()3
岩層: Favret, Besano, Guanling3
國家: 瑞士, 美國, 中國, 德國, 義大利3
化石紀錄: The Paleobiology Database 收錄 13 筆3
又名: Sangiorgiosaurus （舊名稱現在也算作同一種動物）3
發現: Mixosaurus was named in 1887 by George H. Baur. He noticed its forefin was different from other ichthyosaurs, so he gave it a new genus name.1
仍有爭議: Scientists debate whether some species, like Mixosaurus panxianensis, belong in Mixosaurus or in their own genus Barracudasauroides.1