恐龍卡第 0022 張，共 2 027 張

Actiosaurus

名字的意思： “coast lizard”1

吃：植物長脖子恐龍三疊紀晚期

Actiosaurus was a reptile that lived a very long time ago, during the Late Triassic period. Scientists are not sure exactly what kind of reptile it was, but it might have been a dinosaur or something else!1 2

生存年代

206 到 201 百萬年前3

三疊紀晚期

化石發現地

France, specifically from the Antully bonebed near Autun.1 2

最高速度

時速約 38 公里（24 英里）

跑步, 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)

Actiosaurus 時速約 38 公里 (24 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

Actiosaurus was first described in 1883 by a scientist named Henri Sauvage.1

It was originally thought to be a dinosaur, but in 1908 scientists thought it might be an ichthyosaur, which is a marine reptile, not a dinosaur.1

Some scientists now think Actiosaurus might be a choristodere, which is another kind of reptile that lived in water.1

Actiosaurus is considered a nomen dubium, which means its fossils are too incomplete to be sure what it really is.1

The fossils of Actiosaurus are about 205 to 201 million years old, from the Rhaetian age of the Late Triassic.2

Actiosaurus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Actiosaurus 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： Actiosaurus was a long-necked sauropod dinosaur.

真相： Scientists are not sure what Actiosaurus was. It might be a dinosaur, but it could also be a marine reptile like an ichthyosaur or a choristodere. Its fossils are too incomplete to know for sure.1

給恐龍專家

學名: Actiosaurus
命名者: Sauvage 18833
類群: 長脖子恐龍
科 / 演化支: Anchisauridae3
分類: Sauropodomorpha3
岩石的年代: 206 到 201 百萬年 (Rhaetian)3
國家: 法國3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Actiosaurus was named by Henri Sauvage in 1883 from fossils found in the Antully bonebed near Autun, France.1
仍有爭議: Scientists still debate whether Actiosaurus was a dinosaur, an ichthyosaur, or a choristodere, because the fossils are so incomplete.1