恐龍卡第 0327 張，共 2 027 張

Californosaurus

名字的意思： “California lizard”1

吃：肉魚龍類三疊紀晚期嚴格來說不是恐龍

Californosaurus was a medium-sized marine reptile that swam in the seas during the Triassic Period. It had a long snout, a tail that bent downward, and flippers with round, widely spaced finger bones. It probably gave birth in the water and never came onto land.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

237 到 227 百萬年前5

三疊紀晚期

化石發現地

California, USA, and also the Muschelkalk of Germany1 2

長度

3 m (9.8 ft)1

最高速度

時速約 48 公里（30 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 3 隻狗從鼻子接到尾巴一樣長跟 17 根香蕉頭尾相接一樣長能在 3.8 秒內游完一座大泳池（50 公尺）

Californosaurus 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)

Californosaurus 時速約 48 公里 (30 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

Californosaurus was first described in 1902 as a species of Shastasaurus, but later got its own genus name in 1934.1

Its head was small compared to its body, similar to early ichthyosaurs like Mixosaurus and Cymbospondylus.1

The tail bent sharply downward and had a small vertical fluke, which helped it swim.1

It may have had a small dorsal fin on its back.1

The finger bones (phalanges) were circular and widely spaced, giving the flipper a round shape.1

It lived during the Carnian age of the Late Triassic, about 237 to 227 million years ago.2

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

?How big was Californosaurus?

About 3 metres (9.8 feet) long.1 3

?What did Californosaurus eat?

It ate fish and other small marine creatures.1 4

?Was Californosaurus a dinosaur?

No, it was an ichthyosaur, an extinct marine reptile, not a dinosaur.1 4

給恐龍專家

學名: Californosaurus
命名者: Kuhn 19345
類群: 魚龍類
科 / 演化支: Californosauridae5
分類: Ichthyosauria > Ichthyosauromorpha5
岩石的年代: 237 到 227 百萬年 (Carnian)5
岩層: Hosselkus, Hosselkus Limestone5
國家: 美國5
化石紀錄: The Paleobiology Database 收錄 2 筆5
又名: Delphinosaurus （舊名稱現在也算作同一種動物）5
發現: John Campbell Merriam named it in 1902 as Shastasaurus perrini, honoring Professor James Perrin Smith who found the fossil. In 1934, Oscar Kuhn gave it the new genus name Californosaurus.1
仍有爭議: Scientists are not sure if it had a dorsal fin, but it may have had a small one.1