恐龍卡第 1028 張，共 2 027 張

Leninia

名字的意思： “named after Vladimir Lenin, because the museum where the fossil is kept is in the Lenin Memorial and Lenin school complex in Ulyanovsk, Russia”1

吃：肉魚龍類白堊紀早期嚴格來說不是恐龍

Leninia was a marine reptile that lived in the Early Cretaceous seas, not a dinosaur. It had huge eyes and probably dove deep to hunt for fish and squid.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

121 到 120 百萬年前3

白堊紀早期

化石發現地

Kriushi village, on the banks of the Volga River in western Russia1 3

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)

Leninia 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

Only part of the skull was found, about 45 centimetres (18 inches) long. Scientists think the whole skull was between 65 and 90 centimetres (26 to 35 inches) long.1

Leninia had one of the largest scleral rings (the bony ring that supports the eye) of any ichthyosaur. Only Baptanodon and the giant Temnodontosaurus had bigger ones.1

Its skull bones form a star-shaped pattern, which is why its species name is stellans, meaning 'shining' or 'star-like'.1

Leninia lived about 119 to 113 million years ago, during the Early Cretaceous Period.1

It is one of the latest-living members of the ophthalmosaurine group, which were deep-diving ichthyosaurs with very large eyes.1

The fossil was discovered in 2012 in a limestone nodule on the banks of the Volga River, near the town of Kriushi.1

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

給恐龍專家

學名: Leninia
命名者: Fischer et al. 20133
類群: 魚龍類
科 / 演化支: Ophthalmosauridae3
分類: Ichthyosauria > Ichthyosauromorpha3
岩石的年代: 121 到 120 百萬年 (Aptian)3
國家: 俄羅斯3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Leninia was named in 2013 by Valentin Fischer and colleagues. The only known fossil is a partial skull found in 2012 on the Volga River banks in Russia.1 3
仍有爭議: Scientists are not sure exactly how long the whole animal was, because only a piece of the skull has been found.1