恐龍卡第 1397 張，共 2 027 張

Pawpawsaurus

名字的意思： “Pawpaw lizard”1

吃：植物甲龍類白堊紀早期

Pawpawsaurus was a medium-sized armoured dinosaur that lived in what is now Texas, USA, about 100 million years ago. It had a complete skull with bony eyelids, which is rare among its relatives. Scientists used CT scans to study its brain and inner ear, learning how it sensed the world.1 2

生存年代

106 到 100 百萬年前5

白堊紀早期

化石發現地

Tarrant County, Texas, USA (Paw Paw Formation)1 5

長度

4.5 m (15 ft)1

體重

350 kg (772 lb)3

高度

1.3 m (4.3 ft)

估計值

最高速度

時速約 22 公里（14 英里）

跑步, 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？

牠有多高？

估計值

牠有多重？

跟 18 隻狗一樣重

跟 4 隻狗從鼻子接到尾巴一樣長跟 25 根香蕉頭尾相接一樣長跟 70 顆西瓜一樣重跟 18 個幼兒園小朋友一樣重跟 11 個小學生一樣重能在 16 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Pawpawsaurus 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)

Pawpawsaurus 時速約 22 公里 (14 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

Pawpawsaurus is the only nodosaurid known to have had bony eyelids, which are common in ankylosaurids.1

Its brain was about 96 millimetres (3.8 inches) long and 35 millimetres (1.4 inches) wide, which is 30% of the skull length.1

CT scans revealed that Pawpawsaurus had hearing similar to modern crocodilians, meaning it did not hear very well.1

Its sense of smell was more powerful than many meat-eating dinosaurs of its time, thanks to its large nasal cavities.1

The large nasal cavities may have helped cool blood going to the brain, find food, or detect danger.1

Pawpawsaurus lived about 105 to 100 million years ago during the Early Cretaceous.1 5

The only known specimen is a complete skull, which was found in 1992 by Cameron Campbell.1

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

?How big was Pawpawsaurus?

It was a medium sized nodosaur, about 4.5 metres (15 feet) long.1

?Did Pawpawsaurus have a club tail?

No, it did not have a club tail. Unlike Ankylosaurus, Pawpawsaurus and its group (Nodosauridae) lacked that weapon.4

?What did Pawpawsaurus eat?

It was a plant-eater. As an ankylosaur, it ate plants, though its exact diet is not known from the skull alone.1

?Could Pawpawsaurus hear well?

No, its hearing was similar to modern crocodilians, meaning it did not hear very well.1 2

迷思破解王

迷思： Pawpawsaurus is often thought to be a small dinosaur because of its name.

真相： Pawpawsaurus was actually a medium-sized dinosaur, measuring about 4.5 metres (15 feet) long.1

給恐龍專家

學名: Pawpawsaurus
命名者: Lee 19965
類群: 甲龍類
科 / 演化支: Nodosauridae5
分類: Ornithischia > Ankylosauria > Nodosauridae > Thyreophora5
岩石的年代: 106 到 100 百萬年 (Albian)5
岩層: Paw Paw5
國家: 美國5
化石紀錄: The Paleobiology Database 收錄 1 筆5
發現: Pawpawsaurus was named by Y. N. Lee in 1996 based on a complete skull found in the Paw Paw Formation of Texas in May 1992 by Cameron Campbell.1 5
仍有爭議: Scientists debate whether Pawpawsaurus might be the same species as another nodosaurid from the same formation, Texasetes pleurohalio.1