恐龍卡第 0803 張，共 2 027 張

Hesperosaurus

名字的意思： “western lizard”1

吃：植物劍龍類侏羅紀晚期到白堊紀早期

Hesperosaurus was a plated dinosaur that lived about 156 million years ago. It had two rows of bony plates on its back and four spikes on its tail. It munched on plants and walked on four legs.1

生存年代

158 到 143 百萬年前4

侏羅紀晚期到白堊紀早期

化石發現地

Wyoming and Montana, USA1 2

長度

6.5 m (21 ft)1

體重

3.5 公噸到 5 公噸 (7,700 到 11,000 lb)1

高度

1.9 m (6.2 ft)

估計值

最高速度

時速約 13 公里（8 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 3 台汽車一樣重

跟 6 隻狗從鼻子接到尾巴一樣長跟 36 根香蕉頭尾相接一樣長大約跟一頭大象一樣重跟 1000 顆西瓜一樣重跟 6 整班小學生一樣重跟 11 隻北極熊一樣重能在 28 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Hesperosaurus 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)

Hesperosaurus 時速約 13 公里 (8 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

Hesperosaurus is known from a nearly complete skeleton and skull, which is rare for stegosaurs.3

One fossil preserves the first known impression of the horn sheath on a stegosaur back plate.1

Its back plates were longer and lower than those of its close relative Stegosaurus.1

Hesperosaurus lived a little earlier than other stegosaurs from the Morrison Formation.1

The tail spikes, called a thagomizer, had two pairs: the front pair thicker and the rear pair thinner and more horizontal.1

Scientists have debated whether Hesperosaurus should be its own genus or a species of Stegosaurus.1

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

?How big was Hesperosaurus?

Hesperosaurus was a large stegosaur, reaching about 6.5 metres (21 feet) in length and weighing around 3.5 metric tons (3.9 short tons). Some large individuals may have reached 5 metric tons (5.5 short tons).1

?What did Hesperosaurus eat?

Hesperosaurus was a herbivore, meaning it ate plants. It was a quadrupedal plant-eater, like other stegosaurs.1 3

?When did Hesperosaurus live?

Hesperosaurus lived during the Late Jurassic period, about 156 million years ago. It lived a little earlier than other stegosaurs from the Morrison Formation.1 3

?Where was Hesperosaurus found?

Fossils of Hesperosaurus have been found in the states of Wyoming and Montana in the United States of America. They were first discovered in 1985.1

?Did Hesperosaurus have plates or spikes?

Hesperosaurus had two rows of bony plates on its back and four spikes on its tail. The tail spikes, called a thagomizer, had two pairs: the front pair thicker and the rear pair thinner and more horizontal.1

?Is Hesperosaurus a dinosaur?

Yes, Hesperosaurus is a dinosaur. It is a stegosaurian dinosaur, a type of armoured dinosaur.1 3

給恐龍專家

學名: Hesperosaurus
命名者: Carpenter et al. 20014
類群: 劍龍類
科 / 演化支: Stegosauridae4
分類: Ornithischia > Stegosauria > Thyreophora4
岩石的年代: 158 到 143 百萬年 ()4
岩層: Morrison4
國家: 美國4
化石紀錄: The Paleobiology Database 收錄 8 筆4
發現: Hesperosaurus was named in 2001 by Kenneth Carpenter, Clifford Miles, and Karen Cloward. The first fossils were found in 1985 on a ranch in Johnson County, Wyoming, USA.1
仍有爭議: Scientists still debate whether Hesperosaurus is a separate genus from Stegosaurus or just a species of Stegosaurus.1