恐龍卡第 1412 張，共 2 027 張

Pessopteryx

名字的意思： “The name means 'wing' or 'fin' and 'pteryx' means 'wing' in Greek, but for this marine reptile it likely refers to its flippers.”1

吃：肉魚龍類三疊紀早期到三疊紀中期嚴格來說不是恐龍

Pessopteryx was a fast-swimming marine reptile that lived in the ocean during the Early Triassic, about 248 million years ago. It was not a dinosaur, but a type of ichthyosaur, with a fish-like body and flippers for steering.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

249 到 241 百萬年前2

三疊紀早期到三疊紀中期

化石發現地

Fossils of Pessopteryx have been found on Svalbard, which is a group of islands belonging to Norway.1 2

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)

Pessopteryx 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

Pessopteryx lived during the Olenekian age of the Early Triassic, about 248 to 241 million years ago.1 2

It was named by Carl Wiman in 1910, who originally thought there were four different species, but today only one is considered valid.1

Some of the original species names, like P. arctica and P. pinguis, are now considered doubtful, and scientists are not sure if they were really different.1

Pessopteryx is part of the family Merriamosauridae, which includes other ichthyosaurs that lived in the Triassic seas.1 2

The fossils were found in the Vikinghøgda formation, which is a layer of rock from the Early Triassic.2

Pessopteryx is known from only two fossil collections, both from Svalbard, making it a rare find.2

Pessopteryx 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Pessopteryx 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： Some people might think Pessopteryx was a dinosaur because it lived long ago and had a scary name.

真相： Pessopteryx was actually an ichthyosaur, a marine reptile that lived in the ocean, not a dinosaur. Dinosaurs lived on land.1

給恐龍專家

學名: Pessopteryx
命名者: Wiman 19102
類群: 魚龍類
科 / 演化支: Merriamosauridae2
分類: Ichthyosauria > Ichthyosauromorpha2
岩石的年代: 249 到 241 百萬年 ()2
岩層: Vikinghøgda2
國家: 斯瓦巴2
化石紀錄: The Paleobiology Database 收錄 2 筆2
發現: Pessopteryx was first named by Carl Wiman in 1910 based on fossils from Svalbard, Norway. He described several species, but later scientists reclassified them.1
仍有爭議: Scientists are still debating how many species of Pessopteryx really existed, because some of the original fossils are incomplete and hard to compare.1