恐龍卡第 1374 張，共 2 027 張

Paraophthalmosaurus

名字的意思： “near Ophthalmosaurus”1

吃：肉魚龍類侏羅紀晚期到白堊紀早期嚴格來說不是恐龍

Paraophthalmosaurus was a fast-swimming marine reptile that lived in the Late Jurassic seas. It looked a bit like a dolphin but was actually an ichthyosaur, not a dinosaur. It had a long snout and big eyes to hunt fish and squid.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

149 到 143 百萬年前5

侏羅紀晚期到白堊紀早期

化石發現地

Saratov and Ul'yanovsk regions, Russian Federation1 1

長度

最多 3.5 m (11 ft)3 4

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 4 隻狗從鼻子接到尾巴一樣長跟 19 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）

Paraophthalmosaurus 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)

Paraophthalmosaurus 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

Paraophthalmosaurus lived during the Tithonian age of the Late Jurassic, about 149 to 143 million years ago.1

Its name means 'near Ophthalmosaurus' because it was thought to be closely related to that other ichthyosaur.1

Scientists now think Paraophthalmosaurus might actually be the same as another ichthyosaur called Nannopterygius.2

The first fossils of Paraophthalmosaurus were found in a brick factory spoil heap in Gornyi, Russia.1 1

It had a femur (thigh bone) with three separate facets, which is a special feature that helps identify it.1

Like all ichthyosaurs, Paraophthalmosaurus gave birth to live young instead of laying eggs.1

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

?How big was Paraophthalmosaurus?

About 3.5 metres (11 feet) long. It was small for an ichthyosaur.3

?Was Paraophthalmosaurus a dinosaur?

No, it was an ichthyosaur, a marine reptile that lived in the sea, not a dinosaur.5

?How fast could Paraophthalmosaurus swim?

It was a fast swimmer over short distances, but not efficient for long-distance swimming. It likely ambushed prey in shallow seas.3

迷思破解王

迷思： Paraophthalmosaurus is a dinosaur.

真相： It is not a dinosaur. It is an ichthyosaur, a group of marine reptiles that lived in the sea.1

給恐龍專家

學名: Paraophthalmosaurus
命名者: Arkhangelsky 19975
類群: 魚龍類
科 / 演化支: Ophthalmosauridae5
分類: Ichthyosauria > Ichthyosauromorpha5
岩石的年代: 149 到 143 百萬年 (Tithonian)5
國家: 俄羅斯5
化石紀錄: The Paleobiology Database 收錄 1 筆5
發現: Paraophthalmosaurus was named by Russian paleontologist Arkhangelsky in 1997. The fossils were found in a brick factory spoil heap near Gornyi, Russia.1
仍有爭議: Scientists are still debating whether Paraophthalmosaurus is a valid genus or if it should be considered a synonym of Nannopterygius.2