恐龍卡第 1235 張，共 2 027 張

Nanosaurus

名字的意思： “small or dwarf lizard”1

吃：植物有喙的草食恐龍侏羅紀晚期到白堊紀早期

Nanosaurus was a tiny, speedy plant-eater that lived in North America during the Late Jurassic. It ran on two long legs, had short arms, and was one of the smallest dinosaurs in its neighborhood.1

生存年代

158 到 143 百萬年前3

侏羅紀晚期到白堊紀早期

化石發現地

Colorado, Utah, and Wyoming, USA3

長度

2 到 2.2 m (6.6 到 7.2 ft)1

體重

20 kg 到 30 kg (44 到 66 lb)1

高度

0.7 m (2.3 ft)

估計值

最高速度

時速約 41 公里（25 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 8 隻家貓一樣重

跟 4 隻家貓從鼻子接到尾巴一樣長跟 12 根香蕉頭尾相接一樣長跟 6 顆西瓜一樣重能在 8.8 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Nanosaurus 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)

Nanosaurus 時速約 41 公里 (25 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

Nanosaurus had thin, bony plates along its ribs, called intercostal plates, which helped it breathe or store energy.1

This dinosaur was only about 2 to 2.2 metres (6.6 to 7.2 feet) long and weighed as little as 20 to 30 kilograms (44 to 66 pounds).1

Nanosaurus lived alongside giants like Allosaurus, Stegosaurus, and Brachiosaurus in the Morrison Formation.1

Scientists once thought Nanosaurus was several different dinosaurs, including Drinker and Othnielosaurus, but now they think it was just one species.1

Nanosaurus had short, broad hands with short fingers, and a small head.1

It lived in a semiarid environment with wet and dry seasons, full of ferns, cycads, and conifer forests.1

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

?How big was Nanosaurus?

About 2 to 2.2 metres (6.6 to 7.2 feet) long and weighed 20 to 30 kilograms (44 to 66 pounds).1

?What did Nanosaurus eat?

It was a herbivore that ate a variety of plants, using its leaf-shaped cheek teeth to chew.1 2

?When did Nanosaurus live?

It lived about 155 to 148 million years ago, during the Late Jurassic period.1

?Where was Nanosaurus found?

Its fossils come from the Morrison Formation in the south-western United States, especially Colorado, Utah, and Wyoming.1

?Was Nanosaurus a dinosaur?

Yes, it was a small neornithischian dinosaur, not a pterosaur or marine reptile.1

?Could Nanosaurus run fast?

Maybe up to about 41 km/h (25 mph), faster than a fast human runner. This is an estimate from its size. It was a swift dinosaur with long legs, built for running.1

迷思破解王

迷思： Nanosaurus was a meat-eater.

真相： Nanosaurus was a plant-eater (herbivore) with teeth shaped for chewing plants.3 1

給恐龍專家

學名: Nanosaurus
命名者: Marsh 18773
類群: 有喙的草食恐龍
科 / 演化支: Neornithischia3
分類: Ornithischia3
岩石的年代: 158 到 143 百萬年 ()3
岩層: Morrison3
國家: 美國3
化石紀錄: The Paleobiology Database 收錄 32 筆3
又名: Drinker, Othnielosaurus （舊名稱現在也算作同一種動物）3
發現: Othniel Charles Marsh named Nanosaurus in 1877 from fossils found in Colorado. The name means 'small lizard'.1
仍有爭議: Scientists still debate whether Nanosaurus was an omnivore that sometimes ate meat, or a strict herbivore.1