恐龍卡第 0270 張，共 2 027 張

Besanosaurus

名字的意思： “Besano lizard”1

吃：肉魚龍類三疊紀中期嚴格來說不是恐龍

Besanosaurus was a huge, dolphin-like marine reptile that swam in warm, shallow seas during the Triassic Period. It had a very long, slender snout and small teeth, perfect for snapping up fish and squid. Even though it looked like a dinosaur, it was actually an ichthyosaur, a different group of ancient reptiles.1 2

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5

三疊紀中期

化石發現地

Besano Formation near Monte San Giorgio, Italy and Switzerland1 2

長度

5 到 6 m (16 到 20 ft)3 1

最高速度

時速約 43 公里（27 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？

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能在 4.2 秒內游完一座大泳池（50 公尺）

Besanosaurus 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)

Besanosaurus 時速約 43 公里 (27 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

Besanosaurus lived about 247 to 237 million years ago, during the Middle Triassic Period.3

The first complete skeleton of Besanosaurus was discovered in 1993 in a quarry near Besano, Italy.2

Besanosaurus had four flippers instead of legs, and a fin on its tail to help it swim.1

One fossil of Besanosaurus contains the remains of an embryo inside, showing that these reptiles gave birth to live young, not eggs.1

Scientists once thought a similar fossil was a different animal called Mikadocephalus, but now they think it is actually Besanosaurus.2

Besanosaurus had a very long, thin snout and tiny teeth, which it used to snap up small, fast prey.1

The Besano Formation where Besanosaurus was found was once a lagoon with many other ichthyosaurs, each using different hunting methods to avoid competition.1

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

?How big was Besanosaurus?

About 8 metres (26 feet) long, making it the largest ichthyosaur in its environment.1 2 4

?What did Besanosaurus eat?

It ate small fish and squid-like animals called coleoid cephalopods, catching them with quick, snapping bites.1

?Did Besanosaurus have live babies?

Yes, it gave birth to live young. One fossil even has an embryo inside its chest.1

?Is Besanosaurus a dinosaur?

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

給恐龍專家

學名: Besanosaurus
命名者: Dal Sasso and Pinna 19965
類群: 魚龍類
科 / 演化支: Besanosauridae5
分類: Ichthyosauria > Ichthyosauromorpha5
岩石的年代: 247 到 237 百萬年 ()5
岩層: Monte San Giorgio bituminous shales5
國家: 瑞士5
化石紀錄: The Paleobiology Database 收錄 1 筆5
發現: Besanosaurus was named by Italian paleontologists Cristiano Dal Sasso and Giovanni Pinna in 1996. The first complete skeleton was found in 1993 in the Sasso Caldo quarry near Besano, Italy.3 2
仍有爭議: Scientists are still debating how Besanosaurus and other shastasaurid ichthyosaurs are related to each other.1