恐龍卡第 1733 張，共 2 027 張

Sveltonectes

名字的意思： “agile swimmer”1

吃：肉魚龍類白堊紀早期嚴格來說不是恐龍

Sveltonectes was a speedy marine reptile that lived in the ocean during the time of the dinosaurs. It had a sleek body and sharp, tiny teeth for catching fish and squid.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

Ulyanovsk region, western Russia3 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)

Sveltonectes 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

The name Sveltonectes means 'agile swimmer' in Greek, because it was small and built for speed in the water.1

Its scientific name Sveltonectes insolitus means 'unusual agile swimmer', because its teeth and bones are very different from other ichthyosaurs.1

Sveltonectes had small, sharp teeth, unlike most other Cretaceous ichthyosaurs that had bigger, blunter teeth.2

Its closest relative is another ichthyosaur called Aegirosaurus.1

The only known fossil of Sveltonectes was found in rocks that are about 126 million years old, from the Early Cretaceous period.1

Scientists think Sveltonectes was a fast swimmer because it had strong muscles around its flippers and a streamlined skull.1

Sveltonectes 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Sveltonectes 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: Sveltonectes
命名者: Fischer et al. 20113
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
國家: 俄羅斯3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Sveltonectes was named in 2011 by Valentin Fischer, Edwige Masure, Maxim S. Arkhangelsky, and Pascal Godefroit, based on a nearly complete skeleton found in western Russia.1 3