恐龍卡第 0703 張，共 2 027 張

Gavialimimus

名字的意思： “gharial mimic, after its long snout like a gharial crocodile”1

吃：魚滄龍類白堊紀晚期嚴格來說不是恐龍

Gavialimimus was a marine lizard that swam in the warm seas of Morocco 66 million years ago. It had a very long, narrow snout like a modern gharial, which helped it catch fish. This clever hunter lived alongside other huge sea reptiles and sometimes became their dinner.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

72 到 66 百萬年前3

白堊紀晚期

化石發現地

Oulad Abdoun Basin, Morocco3 1

長度

6 m (20 ft)1

最高速度

時速約 38 公里（24 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 6 隻狗從鼻子接到尾巴一樣長跟 33 根香蕉頭尾相接一樣長能在 4.7 秒內游完一座大泳池（50 公尺）

Gavialimimus 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)

Gavialimimus 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

Gavialimimus was about 6 metres (20 feet) long, as long as a small bus.1

Its name means 'gharial mimic' because its snout looked like that of the modern gharial crocodile, which also eats fish.1

Scientists think Gavialimimus lived in the same seas as many other mosasaurs, but it ate different prey to avoid competition.1

Bigger mosasaurs like Thalassotitan sometimes ate Gavialimimus. One fossil shows bite marks from a large predator.1

The first fossil of Gavialimimus was a skull and some bones found in the phosphate mines of Morocco.1

In 2025, scientists argued that a tooth named Platecarpus ptychodon actually belongs to Gavialimimus, so its full name might change to Gavialimimus ptychodon.1

Gavialimimus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Gavialimimus 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。

你們都在問

關於 Gavialimimus 最常被問的問題

?Was Gavialimimus a dinosaur?

No, Gavialimimus was a marine lizard called a mosasaur, not a dinosaur. It lived in the sea during the time of dinosaurs.1

?How big was Gavialimimus?

About 6 metres long, as long as a small bus.1

?What did Gavialimimus eat?

It was a large fish-eater, using its long snout and interlocking teeth to catch fast-swimming fish.1 2

?Did other animals eat Gavialimimus?

Yes, bigger mosasaurs like Thalassotitan and Prognathodon sometimes ate Gavialimimus. One fossil shows it was digested by a large mosasaur.1

迷思破解王

迷思： Some people think Gavialimimus was a dinosaur because it is a reptile from the age of dinosaurs.

真相： Gavialimimus was a mosasaur, a marine lizard, not a dinosaur. It lived in the sea and was more closely related to modern monitor lizards.1

給恐龍專家

學名: Gavialimimus
命名者: Strong et al. 20203
類群: 滄龍類
科 / 演化支: Mosasauridae3
分類: Mosasauroidea3
岩石的年代: 72 到 66 百萬年 (Maastrichtian)3
岩層: Phosphates3
國家: 摩洛哥3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Gavialimimus was named in 2020 by Strong and colleagues based on a skull from the Oulad Abdoun Basin in Morocco. The specific name almaghribensis means 'from Morocco' in Arabic.1 3
仍有爭議: Scientists debate whether Gavialimimus almaghribensis is the same species as an older fossil called Platecarpus ptychodon. If they are the same, the older name would take priority.1