恐龍卡第 1663 張，共 2 027 張

Simolestes

名字的意思： “snub-nosed thief”1

吃：肉蛇頸龍類侏羅紀中期到白堊紀早期嚴格來說不是恐龍

Simolestes was a pliosaur, a kind of short-necked plesiosaur that lived in the Jurassic seas. It had a short, high, and wide skull built to handle twisting forces when hunting. It probably ate squid-like animals and ammonites.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

169 到 143 百萬年前2

侏羅紀中期到白堊紀早期

化石發現地

England (Oxford Clay Formation), France, and India (Bhuj Formation)1 2

長度

4.6 m (15 ft)1

最高速度

時速約 28 公里（17 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 26 根香蕉頭尾相接一樣長能在 6.4 秒內游完一座大泳池（50 公尺）

Simolestes 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)

Simolestes 時速約 28 公里 (17 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

Simolestes had salt-secreting glands, which helped it drink seawater and keep its salt balance.1

The type specimen of Simolestes vorax is an almost complete but crushed skeleton found in the Oxford Clay of England.1

Simolestes lived from the Middle to Late Jurassic, about 171 to 145 million years ago.1

Scientists think Simolestes might have hunted in deeper waters or at night, because its prey (cephalopods) move up at night to feed.1

The species Simolestes keileni from France was moved to a new genus called Lorrainosaurus in 2023.1

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

?How big was Simolestes?

The largest Simolestes vorax specimens reached about 4.6 metres (15 feet) long, based on a head to body ratio similar to Liopleurodon.1

?What did Simolestes eat?

Simolestes probably ate squid-like animals, belemnites, and ammonites. Its exact feeding habits are unclear, but it likely hunted in deeper waters or at night.1

?Was Simolestes a dinosaur?

No, Simolestes was a pliosaur, a type of short-necked plesiosaur, which is a marine reptile, not a dinosaur.1

?When did Simolestes live?

Simolestes lived during the Middle to Late Jurassic, about 171 to 145 million years ago.1

給恐龍專家

學名: Simolestes
命名者: Andrews 19092
類群: 蛇頸龍類
科 / 演化支: Pliosauridae2
分類: Plesiosauria > Pliosauridae > Sauropterygia2
岩石的年代: 169 到 143 百萬年 (Bajocian / Tithonian)2
岩層: Umia, Oxford Clay, Marnes de Gravelotte (=La Gravclotte Marls)2
國家: 印度, 英國, 法國2
化石紀錄: The Paleobiology Database 收錄 5 筆2
發現: Simolestes was named by C. W. Andrews in 1909 based on a skeleton from the Oxford Clay of Peterborough, England.1 2
仍有爭議: Scientists are unsure about the exact feeding habits of Simolestes, though the current consensus is that it ate cephalopods.1