恐龍卡第 0847 張，共 2 027 張

Hypsilophodon

名字的意思： “Hypsilophus-tooth, named after a lizard called Hypsilophus”1

吃：植物有喙的草食恐龍侏羅紀晚期到白堊紀早期

Hypsilophodon was a tiny, speedy plant-eater that sprinted through the forests of Early Cretaceous England. It had a sharp beak like a parrot and a long stiff tail to help it balance while running.1 2

生存年代

155 到 120 百萬年前4

侏羅紀晚期到白堊紀早期

化石發現地

Isle of Wight, England, United Kingdom1 2

長度

1.5 到 2 m (4.9 到 6.6 ft)1 2

體重

20 kg (44 lb)1 2

高度

0.6 m (2 ft)3

最高速度

時速約 39 公里（24 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？

牠有多重？

跟 5 隻家貓一樣重

跟 4 隻家貓從鼻子接到尾巴一樣長跟 11 根香蕉頭尾相接一樣長跟 4 顆西瓜一樣重能在 9.2 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Hypsilophodon 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)

Hypsilophodon 時速約 39 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

Hypsilophodon had five fingers on each hand, and one of them was opposable, like a thumb, so it could grasp branches and food.1

Its tail was stiffened by bony tendons, which helped it keep balance while running fast on two legs.1

Its teeth were self-sharpening: the upper and lower teeth rubbed together as it chewed, keeping them sharp.1

Hypsilophodon probably had cheeks, which helped it hold and chew food, just like modern plant-eaters.1 2

All the true Hypsilophodon fossils come from a single layer of rock called the Hypsilophodon Bed, on the Isle of Wight.1

It lived about 126 million years ago, during the Early Cretaceous period.1 2

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

?How big was Hypsilophodon?

It was about 1.5 to 2 metres (5 to 6.5 feet) long and weighed around 20 kilograms (44 pounds).1 2

?What did Hypsilophodon eat?

It was a herbivore, eating low-growing plants like young shoots and roots. It used its sharp beak to clip vegetation and probably had cheeks to help chew.2 1

?Could Hypsilophodon climb trees?

No, scientists used to think it climbed trees, but we now know it lived on the ground and was a fast runner.2 1

?How fast could Hypsilophodon run?

It was built for running with long legs, a stiff tail for balance, and a light body, but no exact speed is known.2 1

?Did Hypsilophodon have feathers?

No, there is no evidence that Hypsilophodon had feathers. It was a small ornithischian dinosaur with scaly skin.1

?Where did Hypsilophodon live?

It lived in what is now England, specifically on the Isle of Wight, during the Early Cretaceous period about 126 million years ago.2 1

?Was Hypsilophodon bigger than a chicken?

Yes, it was about the size of a large turkey or a small deer, much bigger than a chicken.2

?Did Hypsilophodon live in groups?

Yes, several fossils were found together, so some experts think it lived in groups, like deer.2

迷思破解王

迷思： Some people thought Hypsilophodon lived in trees, like a climbing dinosaur.

真相： Scientists now know it lived on the ground and was built for running, not climbing.2

給恐龍專家

學名: Hypsilophodon
命名者: Huxley 18704
類群: 有喙的草食恐龍
科 / 演化支: Hypsilophodontidae4
分類: Ornithischia > Ornithopoda4
岩石的年代: 155 到 120 百萬年 (Kimmeridgian / Aptian)4
岩層: Wessex, Vectis, Artoles4
國家: 英國, 西班牙, 羅馬尼亞, 日本, 葡萄牙4
化石紀錄: The Paleobiology Database 收錄 10 筆4
發現: The first fossils were found in 1849 on the Isle of Wight, but they were thought to be from a young Iguanodon. In 1869, Thomas Henry Huxley realized it was a new dinosaur and named it Hypsilophodon foxii.1
仍有爭議: Scientists are not sure exactly how Hypsilophodon is related to other plant-eating dinosaurs. Some think it belongs in Ornithopoda, but recent studies question that.1