恐龍卡第 1106 張，共 2 027 張

Macgowania

名字的意思： “McGowan's reptile, named after paleontologist Chris McGowan”1

吃：肉魚龍類三疊紀晚期嚴格來說不是恐龍

Macgowania was a small, fast-swimming marine reptile that lived in the ocean during the Late Triassic, about 210 million years ago. It was not a dinosaur, but a kind of ichthyosaur, with a fish-like body and flippers. It hunted small sea creatures with its sharp teeth.1 3

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

227 到 206 百萬年前3

三疊紀晚期

化石發現地

British Columbia, Canada, along the shores of Williston Lake and near the Graham River1

長度

3 m (9.8 ft)1

最高速度

時速約 48 公里（30 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

牠有多大？

牠有多長？

跟 3 隻狗從鼻子接到尾巴一樣長跟 17 根香蕉頭尾相接一樣長能在 3.8 秒內游完一座大泳池（50 公尺）

Macgowania 跟「你」比起來有多大？

只是在你的瀏覽器裡算算數學。什麼都不會被儲存或傳送出去。

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)

Macgowania 時速約 48 公里 (30 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

Macgowania had a very large eye socket and a huge nostril, which may have helped it see and smell in the dark ocean.2

Its flippers had a special pattern of bones, with a mosaic of small polygonal pieces, which is different from many other ichthyosaurs.2

The first fossil was found in 1996, but it was originally thought to be a species of Ichthyosaurus. Later, in 1999, scientists gave it its own genus name.1

A second, nearly complete skeleton was discovered in 2009 by an outdoor club, but part of it had already fallen into a river. Scientists rescued the remaining part with ropes and plaster.1

Macgowania lived in the ocean, but it breathed air and gave birth to live young, just like other ichthyosaurs.2

Its name honors Chris McGowan, the paleontologist who first described the fossil, and the species name 'janiceps' comes from Janus, the Roman god with two faces.1

Macgowania 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Macgowania 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： Macgowania is often thought to be a dinosaur because it lived in the same era and is sometimes shown in dinosaur books.

真相： Macgowania is not a dinosaur. It is an ichthyosaur, a marine reptile that lived in the ocean. Dinosaurs were land reptiles with different body features.1

給恐龍專家

學名: Macgowania
命名者: Motani 19993
類群: 魚龍類
科 / 演化支: Parvipelvia3
分類: Ichthyosauria > Ichthyosauromorpha3
岩石的年代: 227 到 206 百萬年 (Norian)3
岩層: Pardonet3
國家: 加拿大3
化石紀錄: The Paleobiology Database 收錄 2 筆3
發現: The first fossil was found in British Columbia, Canada, and described by Chris McGowan in 1996 as Ichthyosaurus janiceps. In 1999, Ryosuke Motani gave it its own genus, Macgowania.1
仍有爭議: Scientists are not sure if a second partial skeleton belongs to Macgowania because it is poorly preserved, so they debate whether it is the same species.1