恐龍卡第 0745 張，共 2 027 張

Goronyosaurus

名字的意思： “lizard from Goronyo”1

吃：肉滄龍類白堊紀晚期嚴格來說不是恐龍

Goronyosaurus was a marine lizard that lived in the warm, murky waters of an ancient inland sea in West Africa. It had a long, tube-like snout and blunt teeth for smashing hard-shelled prey, like a crocodile of the sea.2

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

Niger and Nigeria, West Africa3 2

長度

6 到 7 m (20 到 23 ft)1

最高速度

時速約 37 公里（23 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 7 隻狗從鼻子接到尾巴一樣長跟 39 根香蕉頭尾相接一樣長能在 4.9 秒內游完一座大泳池（50 公尺）

Goronyosaurus 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)

Goronyosaurus 時速約 37 公里 (23 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

Goronyosaurus had straight, rounded teeth instead of the sharp, cutting teeth of most other mosasaurs. These teeth were perfect for crushing, not slicing.2

Its skull was narrow and flattened, with a long snout and small nostrils placed far back. This helped it hunt in murky, shallow waters.2

The bones of its pelvis were fused together, which is unusual for mosasaurs. This may have made its swimming more powerful.1

Goronyosaurus lived about 70 to 66 million years ago, during the very end of the Age of Dinosaurs.2

It shared its coastal lagoon home with other mosasaurs, crocodiles, turtles, and large fish.2

Scientists think Goronyosaurus was starting to adapt to freshwater rivers, but the big extinction 66 million years ago stopped it.2

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

?How big was Goronyosaurus?

About 5.14 metres (16.9 feet) long. That is roughly as long as a small car.2

?What did Goronyosaurus eat?

It ate hard-shelled animals like shellfish and turtles. Its blunt, rounded teeth were perfect for smashing shells.2

?Was Goronyosaurus a dinosaur?

No, it was a marine lizard, not a dinosaur. It belonged to a group called mosasaurs.2

?When did Goronyosaurus live?

It lived about 70 to 66 million years ago, during the very end of the Age of Dinosaurs.2

迷思破解王

迷思： Some people think Goronyosaurus was a dinosaur.

真相： Goronyosaurus was a mosasaur, a type of marine lizard, not a dinosaur. Mosasaurs are more closely related to modern snakes and monitor lizards.2

給恐龍專家

學名: Goronyosaurus
命名者: Azzaroli et al. 19723
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: Dukamaje, Rima3
國家: 奈及利亞, 尼日3
化石紀錄: The Paleobiology Database 收錄 3 筆3
發現: The first fossils were found in Nigeria and named Mosasaurus nigeriensis by W. E. Swinton in 1930. In 1972, a new skull from Taloka, Nigeria, showed it was so different that scientists gave it its own genus name Goronyosaurus.2 1
仍有爭議: Scientists are not sure exactly how Goronyosaurus is related to other mosasaurs. Its strange skull and teeth make it hard to place in the family tree.2