恐龍卡第 1360 張，共 2 027 張

Pannoniasaurus

名字的意思： “Pannonian lizard, named after the ancient Roman province of Pannonia in Hungary”1

吃：肉滄龍類白堊紀晚期嚴格來說不是恐龍

Pannoniasaurus was a mosasaur, a kind of marine lizard, but it lived in rivers, not the sea! It had a flat, crocodile-like skull and could grow up to 6 meters long. This unexpected hunter lived in what is now Hungary during the Late Cretaceous.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

86 到 84 百萬年前3

白堊紀晚期

化石發現地

Iharkút open-pit bauxite mine, Bakony Mountains, Western Hungary1

長度

最多 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）

Pannoniasaurus 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)

Pannoniasaurus 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

Pannoniasaurus is the first mosasauroid ever found that lived in freshwater, like a river dolphin.1

Its name means 'unexpected' because scientists were surprised to find a mosasaur in freshwater rocks.1

It had a flattened, violin-shaped snout and teeth with ridges, like a crocodile.1

Fossils of many individuals, from babies to adults, were found together in a flood deposit.1

Pannoniasaurus lived alongside dinosaurs, pterosaurs, turtles, and crocodiles in a tropical floodplain.1

Its tail was not flattened like other mosasaurs, so it probably swam more like a land lizard.1

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

?Was Pannoniasaurus a dinosaur?

No, it was a mosasaur, a kind of marine lizard, not a dinosaur.2

?How big was Pannoniasaurus?

It was a medium sized mosasaur, reaching up to 6 metres (20 feet) in length.2

?Did Pannoniasaurus live in the sea?

No, it lived in freshwater rivers and floodplains, unlike most other mosasaurs.1

?What did Pannoniasaurus eat?

It probably ate fish and other small animals in the rivers, based on its crocodile-like teeth and habitat.2

迷思破解王

迷思： All mosasaurs lived only in the ocean.

真相： Pannoniasaurus shows that some mosasaurs lived in freshwater rivers and lakes.1

給恐龍專家

學名: Pannoniasaurus
命名者: Makádi et al. 20123
類群: 滄龍類
科 / 演化支: Tethysaurinae3
分類: Mosasauroidea3
岩石的年代: 86 到 84 百萬年 (Santonian)3
岩層: Csehbánya, Ajka Coal3
國家: 匈牙利3
化石紀錄: The Paleobiology Database 收錄 2 筆3
又名: Pannoniasaurus （舊名稱現在也算作同一種動物）3
發現: Pannoniasaurus was named in 2012 by László Makádi, Michael Caldwell, and Attila Ősi from fossils found in a bauxite mine in Hungary.1 3
仍有爭議: Scientists are still debating whether Pannoniasaurus had paddle-like limbs or more lizard-like legs.1