恐龍卡第 1685 張，共 2 027 張

Sisteronia

名字的意思： “Sister's own, named after the Sisteron region in France”1

吃：肉魚龍類白堊紀早期到白堊紀晚期嚴格來說不是恐龍

Sisteronia was a fast-swimming marine reptile that lived in the Cretaceous seas. It had sharp teeth for catching small fish and squid. Sisteronia was an ichthyosaur, not a dinosaur, and looked a bit like a modern dolphin.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

113 到 94 百萬年前3

白堊紀早期到白堊紀晚期

化石發現地

England (Gault Formation, Cambridge Greensand Member), France (Vocontian Basin), and 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)

Sisteronia 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

Sisteronia had teeth that were rectangular in cross-section, which is unusual among ichthyosaurs.2

It lived during the Albian and early Cenomanian stages of the Cretaceous, about 112 to 100 million years ago.2

Sisteronia is known from fossils found in England, France, and Russia, showing it lived in the seas of western Europe.3

This ichthyosaur belonged to the group Platypterygiinae, which were the last surviving ichthyosaurs before they went extinct.2

The name Sisteronia comes from the town of Sisteron in France, near where some of its fossils were found.1

Sisteronia had a raised process on the floor of the foramen magnum (the hole in the skull for the spinal cord), a unique feature not seen in other ichthyosaurs.2

Sisteronia 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Sisteronia 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: Sisteronia
命名者: Fischer et al. 20143
類群: 魚龍類
科 / 演化支: Ophthalmosauridae3
分類: Ichthyosauria > Ichthyosauromorpha3
岩石的年代: 113 到 94 百萬年 (Albian / Cenomanian)3
岩層: Marnes bleues, West Melbury Marly Chalk, Gault3
國家: 英國, 法國, 俄羅斯3
化石紀錄: The Paleobiology Database 收錄 6 筆3
發現: Sisteronia was named by Fischer and colleagues in 2014, based on fossils from the Cambridge Greensand Member in England and the Vocontian Basin in France.3 1
仍有爭議: Scientists are still debating exactly how diverse late Cretaceous ichthyosaurs were, and whether Sisteronia was part of a broader European hotspot of ichthyosaur diversity.1