恐龍卡第 1292 張，共 2 027 張

Notohypsilophodon

名字的意思： “southern Hypsilophodon”1

吃：植物有喙的草食恐龍白堊紀晚期

Notohypsilophodon was a small, speedy plant eater that ran on two legs. It lived in what is now Argentina during the Late Cretaceous, about 100 to 90 million years ago. Scientists found a young one, so we are still learning about this little dinosaur.1 4

生存年代

100 到 90 百萬年前4

白堊紀晚期

化石發現地

Buen Pasto, Chubut Province, Patagonia, Argentina1 2

長度

1.3 m (4.3 ft)1

體重

6 kg (13 lb)1

高度

0.43 m (1.4 ft)

估計值

最高速度

時速約 29 公里（18 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 1.5 隻家貓一樣重

跟 2.5 隻家貓從鼻子接到尾巴一樣長跟 7 根香蕉頭尾相接一樣長大約跟一隻家貓一樣重跟 50 根香蕉一樣重小到能從椅子底下走過去能在 12 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Notohypsilophodon 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)

Notohypsilophodon 時速約 29 公里 (18 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

Notohypsilophodon was the first hypsilophodont dinosaur ever found in South America, which made it very special to scientists.1 2

The only skeleton we have is from a young dinosaur, because its backbone bones were not fully fused together.1 2

Its arm bone, the humerus, had no deltopectoral crest, a ridge that many other dinosaurs have for muscle attachment.2

Its shin bone, the tibia, had a bulge on the front and inner side, which is a unique feature of this dinosaur.2

The fibula, a bone in the lower leg, suddenly became narrow near the middle of its shaft, another special trait.2

Its ankle bone, the astragalus, had a top surface with two levels, which is different from many other ornithopods.2

The foot claws, called unguals, had flat undersides, which may have helped it walk or dig.2

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

?How big was Notohypsilophodon?

About 1.3 metres (4.3 ft) long and weighed around 6 kilograms (13 lb), roughly the size of a small dog.1

?What did Notohypsilophodon eat?

It was a herbivore, eating plants. It may have swallowed small stones called gastroliths to help grind up food in its stomach.1 3

?When did Notohypsilophodon live?

It lived during the Late Cretaceous Period, about 100 to 90 million years ago.1

?Is Notohypsilophodon a dinosaur?

Yes, it is a dinosaur. It is a type of ornithopod, a group of plant-eating, bipedal dinosaurs.1

迷思破解王

迷思： Some people think Notohypsilophodon was a true hypsilophodont, like Hypsilophodon.

真相： Scientists now think Hypsilophodontidae is not a real family, and Notohypsilophodon is too incomplete to be sure. It is considered a basal ornithopod, possibly part of a group called Elasmaria.1

給恐龍專家

學名: Notohypsilophodon
命名者: Martínez 19984
類群: 有喙的草食恐龍
科 / 演化支: Elasmaria4
分類: Ornithischia > Ornithopoda > Iguanodontia4
岩石的年代: 100 到 90 百萬年 (Cenomanian / Turonian)4
岩層: Bajo Barreal4
國家: 阿根廷4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: The skeleton was found in the Bajo Barreal Formation in Argentina during excavations that started in 1985. Rubén D. Martínez named it Notohypsilophodon comodorensis in 1998.1 2
仍有爭議: Scientists are not sure exactly where Notohypsilophodon belongs in the dinosaur family tree, because the only skeleton is incomplete and from a young animal.1