恐龍卡第 0048 張，共 2 027 張

Aigialosaurus

名字的意思： “goat lizard”1

吃：肉滄龍類白堊紀晚期嚴格來說不是恐龍

Aigialosaurus was an early marine lizard that lived about 100 million years ago. It was small, only about as long as a cat, and it is one of the oldest known relatives of the giant mosasaurs. This little reptile swam in warm seas near what is now Croatia.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

100 到 94 百萬年前3

白堊紀晚期

化石發現地

Hvar Island, Croatia1 3

長度

0.65 m (2.1 ft)1

最高速度

時速約 7 公里（4 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 根香蕉頭尾相接一樣長能在 26 秒內游完一座大泳池（50 公尺）

Aigialosaurus 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)

Aigialosaurus 時速約 7 公里 (4 mph)

騎腳踏車的小朋友 時速約 12 公里 (7 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

Aigialosaurus is the oldest known member of the group that led to giant mosasaurs, which were top predators in the Late Cretaceous seas.1

The only complete skeleton of Aigialosaurus dalmaticus is 65 cm (2.13 ft) long, making it much smaller than its later relatives.1

Its hip bone had a unique shape: a long ilium with well-developed front and back processes, which helped scientists understand how mosasaur hips evolved.2

Aigialosaurus lived during the Cenomanian age, about 99.7 to 94.3 million years ago, in a warm, shallow sea.1 3

The type specimen was found between Starigrad and Vrboska on Hvar Island, Croatia, in marine limestone.3

Some scientists once thought another fossil, Opetiosaurus, was a second species of Aigialosaurus, but recent studies disagree.1

Aigialosaurus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Aigialosaurus 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 Aigialosaurus 最常被問的問題

?Was Aigialosaurus a dinosaur?

No, it was a marine lizard, not a dinosaur. It belonged to a group called mosasauroids that are more closely related to snakes.1

?How big was Aigialosaurus?

It was small, about 65 cm long, which is roughly the size of a cat.1

?What did Aigialosaurus eat?

Scientists are not sure, but because it was a small marine lizard living in warm seas, it probably ate small fish and other tiny sea creatures.1

?When did Aigialosaurus live?

It lived during the Cenomanian age of the Late Cretaceous, about 99.7 to 94.3 million years ago.1

給恐龍專家

學名: Aigialosaurus
命名者: Kramberger 18923
類群: 滄龍類
科 / 演化支: Aigialosauridae3
分類: Mosasauroidea3
岩石的年代: 100 到 94 百萬年 (Cenomanian)3
岩層: Starigrad Limestone3
國家: 克羅埃西亞3
化石紀錄: The Paleobiology Database 收錄 3 筆3
又名: Aigialosaurus （舊名稱現在也算作同一種動物）3
發現: Aigialosaurus was named by Croatian paleontologist Kramberger in 1892, based on a nearly complete skeleton found on Hvar Island, Croatia.1 3
仍有爭議: Scientists are still debating whether Aigialosaurus was fully marine or lived partly on land, because its skeleton shows features of both lifestyles.1