恐龍卡第 1016 張，共 2 027 張

Lariosaurus

名字的意思： “lizard from Larius, the ancient name of Lake Como”1

吃：魚海生爬蟲類三疊紀早期到三疊紀中期嚴格來說不是恐龍

Lariosaurus was a small, ancient sea reptile that lived in warm, shallow seas during the Triassic Period. It had a short neck, small flippers, and webbed feet, and it probably spent a lot of time hunting in shallow water or even on land.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

251 到 237 百萬年前4

三疊紀早期到三疊紀中期

化石發現地

Italy, Switzerland, Germany, Spain, France, the Netherlands, Austria, and China4 1

長度

0.7 到 0.8 m (2.3 到 2.6 ft)1

最高速度

時速約 7 公里（4 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 1.5 隻家貓從鼻子接到尾巴一樣長跟 4 根香蕉頭尾相接一樣長能在 26 秒內游完一座大泳池（50 公尺）

Lariosaurus 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)

Lariosaurus 時速約 7 公里 (4 mph)

騎腳踏車的小朋友 時速約 12 公里 (7 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

Lariosaurus was one of the smallest nothosaurs, measuring less than one meter long.1

Its front legs were adapted into paddles, but its back legs still had five toes, which is unusual among nothosaurs.1

Scientists think Lariosaurus could give birth to live young, because fossils of babies have been found inside adults.1

A fossil with preserved skin shows that Lariosaurus had webbed hands and feet, like a duck.2

Lariosaurus had a short neck and small flippers, making it a poor swimmer compared to other nothosaurs.1

The first Lariosaurus fossil was discovered in 1830 near Lake Como, Italy, making it one of the earliest known marine reptiles from the Alps.1

Lariosaurus had a sturdy armor of belly ribs (gastralia) that protected its underside.1

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

?What did Lariosaurus eat?

It ate small prey like fish and other reptiles. One fossil had two young placodonts (a type of shelled reptile) in its stomach.1

?How did Lariosaurus swim?

It swam by rowing its strong front limbs like a seal, using a 'flying-rowing' motion. Its hands and feet were webbed, not flippers.2 3

?Did Lariosaurus have live babies?

Yes, scientists think it gave birth to live young. Fossils of baby Lariosaurus have been found inside adults.1

迷思破解王

迷思： Some people thought Lariosaurus was a dinosaur or a stegosaur.

真相： Lariosaurus is a nothosaur, a type of marine reptile, not a dinosaur. The nothosaur Eupodosaurus was once mistaken for a stegosaurian dinosaur but is now considered the same as Lariosaurus.1

給恐龍專家

學名: Lariosaurus
命名者: Curioni 18474
類群: 海生爬蟲類
科 / 演化支: Nothosauridae4
分類: Sauropterygia4
岩石的年代: 251 到 237 百萬年 ()4
岩層: Falang, Meride, Perledo-Varenna4
國家: 義大利, 中國, 德國, 西班牙, 瑞士, 荷蘭4
化石紀錄: The Paleobiology Database 收錄 27 筆4
又名: Deirosaurus, Eupodosaurus, Macromerosauro, Macromerosaurus, Macromirosaurus, Rhaeticonia, Silvestrosaurus （舊名稱現在也算作同一種動物）4
發現: Lariosaurus was named in 1847 by Curioni, based on a fossil found in 1830 at Perledo on Lake Como, Italy.1
仍有爭議: Scientists debate whether the genera Ceresiosaurus and Silvestrosaurus should be considered the same as Lariosaurus.1