恐龍卡第 0562 張，共 2 027 張

Echinodon

名字的意思： “prickly tooth”1

吃：植物有喙的草食恐龍侏羅紀晚期到白堊紀早期

Echinodon was a tiny dinosaur that lived in England during the earliest Cretaceous period. It had sharp, pointy teeth that gave it its name, but it was a plant-eater that used its beak to crop vegetation.1 2

生存年代

152 到 137 百萬年前3

侏羅紀晚期到白堊紀早期

化石發現地

Dorset, England, and possibly western France1

長度

0.5 到 1 m (1.6 到 3.3 ft)1 2

體重

1 kg 到 3 kg (2 到 7 lb)1

高度

0.33 m (1.1 ft)

估計值

最高速度

時速約 21 公里（13 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 25 根香蕉一樣重

跟 2 隻家貓從鼻子接到尾巴一樣長跟 6 根香蕉頭尾相接一樣長大約跟一隻家貓一樣重跟 25 根香蕉一樣重小到能從椅子底下走過去能在 17 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Echinodon 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)

Echinodon 時速約 21 公里 (13 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

Echinodon is one of the smallest and youngest heterodontosaurid dinosaurs known, living about 145 million years ago.1

Its name means 'prickly tooth' because of its sharp, pointed teeth, which were different from the flat teeth of many other plant-eaters.1

Echinodon lived alongside other dinosaurs like Owenodon and Nuthetes, as well as many small mammals, in a warm, lagoonal environment.1

The first Echinodon fossils were jaw bones found by collector Samuel Beckles, and they were originally thought to belong to a lizard.1

Echinodon had a beak made of keratin, like modern birds, which it used to crop plants before chewing them with its teeth.1

Scientists once thought Echinodon might be a stegosaur or a lizard, but now they know it is a heterodontosaurid dinosaur.1

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

?How big was Echinodon?

Echinodon was very small. Its skull was only about 62 millimetres (2.4 inches) long, making it one of the smallest non-avian dinosaurs.1 2

?What did Echinodon eat?

Echinodon was a plant-eater. It used its beak to crop plants and its sharp teeth to chew them, though some scientists once thought it might have eaten insects too.1 2

?Is Echinodon a dinosaur?

Yes, Echinodon is a dinosaur. It is a heterodontosaurid dinosaur, not a lizard, even though it was first thought to be one.1 2

?When did Echinodon live?

Echinodon lived during the earliest Cretaceous period, about 145 million years ago. It is the youngest known heterodontosaurid dinosaur.1 3

迷思破解王

迷思： Echinodon was a lizard or a stegosaur.

真相： Echinodon is actually a small heterodontosaurid dinosaur, related to Fruitadens and Heterodontosaurus.1

給恐龍專家

學名: Echinodon
命名者: Owen 18613
類群: 有喙的草食恐龍
科 / 演化支: Heterodontosauridae3
分類: Ornithischia > Heterodontosauridae3
岩石的年代: 152 到 137 百萬年 (Kimmeridgian / Berriasian)3
岩層: Lulworth, Morrison3
國家: 英國, 美國, 法國3
化石紀錄: The Paleobiology Database 收錄 6 筆3
發現: Echinodon was named by Sir Richard Owen in 1861 based on jaw bones collected by Samuel Beckles from the Purbeck Group in Dorset, England.1
仍有爭議: Scientists still debate whether Echinodon was a herbivore or an omnivore, because its sharp teeth might have been used for eating insects or meat as well as plants.1 2