恐龍卡第 1660 張，共 2 027 張

Simbirskiasaurus

名字的意思： “Simbirsk lizard”1

吃：肉魚龍類白堊紀早期嚴格來說不是恐龍

Simbirskiasaurus was a fast-swimming marine reptile that lived in the Early Cretaceous seas. It had a long snout and sharp teeth for catching fish and squid. This ichthyosaur was not a dinosaur, but a reptile that breathed air like a dolphin.3 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

126 到 121 百萬年前3

白堊紀早期

化石發現地

Right bank of the Volga River, 25 km upstream from Ulyanovsk, Ulyanovsk Oblast, Russia3 1

長度

4 到 5 m (13 到 16 ft)1

最高速度

時速約 46 公里（29 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 5 隻狗從鼻子接到尾巴一樣長跟 28 根香蕉頭尾相接一樣長能在 3.9 秒內游完一座大泳池（50 公尺）

Simbirskiasaurus 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)

Simbirskiasaurus 時速約 46 公里 (29 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

Simbirskiasaurus had a divided nostril opening, with a bony pillar separating it into two parts. This is a rare feature among ichthyosaurs.1

Its skull bones show deep interlocking joints between the prefrontal and lacrimal bones, similar to the much older ichthyosaur Temnodontosaurus.1

The only known fossil is a partial skull and backbone, found in clay from the Simbirskites Clay formation.1 3

Scientists once thought Simbirskiasaurus was a doubtful name, but a 2014 study confirmed it is a valid genus of platypterygiine ichthyosaur.2

It lived about 130 million years ago, during the early Barremian stage of the Early Cretaceous.1

Simbirskiasaurus belongs to the group Platypterygiinae, which includes some of the last ichthyosaurs before they went extinct.1 3

Simbirskiasaurus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Simbirskiasaurus 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。

迷思破解王

迷思： Simbirskiasaurus is a dinosaur.

真相： Simbirskiasaurus is an ichthyosaur, a marine reptile that lived in the ocean and was not a dinosaur.1

給恐龍專家

學名: Simbirskiasaurus
命名者: Otschev and Efimov 19853
類群: 魚龍類
科 / 演化支: Ophthalmosauridae3
分類: Ichthyosauria > Ichthyosauromorpha3
岩石的年代: 126 到 121 百萬年 (Barremian)3
岩層: Simbirskites Clay3
國家: 俄羅斯3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Simbirskiasaurus was named by Russian paleontologists V. G. Otschev and V. M. Efimov in 1985, based on a fragmentary skull and backbone found near the Volga River in Russia.3 1
仍有爭議: Scientists are not sure about the exact size of Simbirskiasaurus because only a partial skull and backbone have been found.1