恐龍卡第 1909 張，共 2 027 張

Wannanosaurus

名字的意思： “Wannan lizard, named after the area in China where it was found”1

吃：植物腫頭龍類白堊紀晚期

Wannanosaurus was a tiny dome-headed dinosaur that lived about 70 million years ago in what is now China. It had a flat skull instead of a big dome, and it was one of the smallest pachycephalosaurs ever found.1 2

生存年代

72 到 66 百萬年前4

白堊紀晚期

化石發現地

Yansi, Shexian County, Anhui Province, China2 4

長度

0.6 m (2 ft)1

體重

3 kg (7 lb)3

最高速度

時速約 24 公里（15 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？

牠有多重？

跟 25 根香蕉一樣重

跟 3 根香蕉頭尾相接一樣長大約跟一隻家貓一樣重跟 25 根香蕉一樣重能在 15 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Wannanosaurus 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)

Wannanosaurus 時速約 24 公里 (15 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

Wannanosaurus had a completely flat skull roof with large openings called supratemporal fenestrae, unlike later dome-headed relatives.2

Its femur was only about 8 centimeters (3.1 inches) long, making it one of the smallest pachycephalosaurs.1

The skull bones were fused together, showing that this tiny dinosaur was an adult when it died.1

It had a long lower jaw with small, denticulated (serrated) teeth, good for chewing plants.2

Wannanosaurus lived in the Late Cretaceous period, about 72 to 69 million years ago.1

Its forelimbs were short, with the humerus only half the length of the femur or less.2

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

?How big was Wannanosaurus?

It was very small, about 60 centimetres (2.0 feet) long. Its thigh bone was only about 8 centimetres (3.1 inches) long.1

?Did Wannanosaurus have a dome on its head?

No, it had a flat skull roof with large openings, unlike later dome-headed pachycephalosaurs. That is why scientists consider it a primitive member of the group.1

?What did Wannanosaurus eat?

It was probably herbivorous or omnivorous, eating low-growing plants and maybe insects. Its small, serrated teeth were good for chewing plants.1

?When did Wannanosaurus live?

It lived about 70 million years ago, during the Late Cretaceous period (Maastrichtian age).1

?Where was Wannanosaurus found?

Its fossils were discovered in Anhui, China, in the Xiaoyan Formation. The name means 'Wannan lizard' after the region.1

?Is Wannanosaurus a dinosaur?

Yes, it is a dinosaur. It belongs to the group Pachycephalosauria, which are dome-headed dinosaurs, even though its own skull was flat.1

給恐龍專家

學名: Wannanosaurus
命名者: Hou 19774
類群: 腫頭龍類
科 / 演化支: Pachycephalosauria4
分類: Ornithischia > Pachycephalosauria4
岩石的年代: 72 到 66 百萬年 (Maastrichtian)4
岩層: Xiaoyan4
國家: 中國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Wannanosaurus was named by Chinese paleontologist Hou Lian-Hai in 1977, based on a partial skeleton found in red sandstones of the Xiaoyan Formation in Anhui, China.2 1
仍有爭議: Scientists are not sure if Wannanosaurus was a very primitive pachycephalosaur or if it was closely related to other flat-headed forms like Homalocephale.1 2