恐龍卡第 0860 張，共 2 027 張

Igdamanosaurus

名字的意思： “lizard from Igdaman”1

吃：肉滄龍類白堊紀晚期嚴格來說不是恐龍

Igdamanosaurus was a marine lizard that lived in the Late Cretaceous seas. It had blunt, rounded teeth like little knobs, perfect for crushing hard-shelled prey such as clams and turtles. It was a small mosasaur, about the size of a close relative called Carinodens.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

84 到 66 百萬年前4

白堊紀晚期

化石發現地

Egypt (Duwi Formation) and Niger (Dukamaje Formation)1 4

長度

3.5 m (11 ft)2 3

最高速度

時速約 36 公里（22 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 4 隻狗從鼻子接到尾巴一樣長跟 19 根香蕉頭尾相接一樣長能在 5 秒內游完一座大泳池（50 公尺）

Igdamanosaurus 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)

Igdamanosaurus 時速約 36 公里 (22 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

Igdamanosaurus had teeth with fine vertical stripes, about 65 to 70 ridges on each tooth.1

Its largest tooth was about 27 mm high and 22 mm wide, which is roughly the size of a small marble.1

The type specimen consists of only three jaw fragments and several broken teeth, all probably from one animal.1

Igdamanosaurus lived between 70.6 and 66 million years ago, during the Maastrichtian stage of the Late Cretaceous.1

It belonged to a group of mosasaurs called Globidensini, known for their rounded, knob-like teeth.1

The name Igdamanosaurus comes from the village of Igdaman (also called In Dama) in Niger, near where the fossils were found.1

Igdamanosaurus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Igdamanosaurus 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： Igdamanosaurus is sometimes thought to be a dinosaur.

真相： It is actually a mosasaur, a marine lizard that lived in the sea, not a dinosaur.1

給恐龍專家

學名: Igdamanosaurus
命名者: Lingham-Soliar 19914
類群: 滄龍類
科 / 演化支: Mosasauridae4
分類: Mosasauroidea4
岩石的年代: 84 到 66 百萬年 (Campanian / Maastrichtian)4
岩層: Phosphates, Duwi, Dukamaje4
國家: 埃及, 摩洛哥, 尼日4
化石紀錄: The Paleobiology Database 收錄 4 筆4
發現: Igdamanosaurus was first named as Globidens aegyptiacus by Otto Zdansky in 1935. In 1991, Theagarten Lingham-Soliar gave it its own genus, Igdamanosaurus, based on fossils from Niger and Egypt.1
仍有爭議: Scientists are not sure whether Igdamanosaurus evolved from a Platecarpus-like ancestor or a Clidastes-like ancestor, because its teeth are unique.1