恐龍卡第 1791 張，共 2 027 張

Thecodontosaurus

名字的意思： “socket-tooth lizard”1

吃：植物長脖子恐龍三疊紀中期到侏羅紀早期

Thecodontosaurus was one of the very first dinosaurs to ever live. It was a small, speedy plant-eater that ran on two legs and lived in what is now England. This little dinosaur is one of the oldest dinosaurs known to science.1

生存年代

247 到 193 百萬年前4

三疊紀中期到侏羅紀早期

化石發現地

England (Bristol area), and also France, Germany, Lesotho, and Zimbabwe1 4

長度

1.2 到 2.5 m (3.9 到 8.2 ft)1

體重

11 kg (24 lb)1

高度

0.3 m (1 ft)1

最高速度

時速約 30 公里（19 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 3 隻家貓一樣重

跟 2.5 隻狗從鼻子接到尾巴一樣長跟 14 根香蕉頭尾相接一樣長跟 92 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）

Thecodontosaurus 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)

Thecodontosaurus 時速約 30 公里 (19 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

Thecodontosaurus was one of the first dinosaurs ever named, back in 1836, even before the word 'dinosaur' existed.1

It had five fingers on each hand and five toes on each foot, with a long claw on each finger.1

Its tail was longer than its head, neck and body put together.1

Thecodontosaurus was a fast runner, and its brain and inner ear helped it keep its head steady while moving.2

For a long time, scientists thought Thecodontosaurus was a lizard, not a dinosaur. It was only in 1870 that Thomas Huxley showed it was a dinosaur.1

Some fossils of Thecodontosaurus were once mistaken for a dinosaur from Australia, but they actually came from England.1

Thecodontosaurus lived during the Late Triassic period, about 205 to 201 million years ago.2

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

?How big was Thecodontosaurus?

On average, it was about 1.2 metres (3.9 ft) long, 30 centimetres (12 in) tall, and weighed 11 kilograms (24 lb). The largest individuals reached about 2.5 metres (8.2 ft) in length.1

?What did Thecodontosaurus eat?

It was an herbivore, eating plants. Its jaws had many small to medium-sized, serrated, leaf-shaped teeth for chewing vegetation.1

?When did Thecodontosaurus live?

It lived during the late Triassic period, about 205 to 201 million years ago.1

?Where was Thecodontosaurus found?

Its fossils have been found in southern England, especially near Bristol, and also in Wales.1 3

?Was Thecodontosaurus a dinosaur?

Yes, it is a dinosaur. It was one of the first dinosaurs to be discovered and one of the oldest that ever existed.1

迷思破解王

迷思： Thecodontosaurus was a large, slow plant-eater like later sauropods.

真相： Thecodontosaurus was small (about 1.2 m long) and a fast, agile runner on two legs.1 2

給恐龍專家

學名: Thecodontosaurus
命名者: Riley and Stutchbury 18364
類群: 長脖子恐龍
科 / 演化支: Sauropodomorpha4
分類: Sauropodomorpha4
岩石的年代: 247 到 193 百萬年 ()4
岩層: Forest Sandstone, Magnesian Conglomerate, Elliot4
國家: 英國, 辛巴威, 法國, 德國, 賴索托4
化石紀錄: The Paleobiology Database 收錄 14 筆4
發現: Thecodontosaurus was discovered in 1834 by surgeon Henry Riley and curator Samuel Stutchbury in a quarry near Bristol, England. They named it in 1836, and the full species name Thecodontosaurus antiquus was given by John Morris in 1843.1
仍有爭議: Scientists are not sure whether Thecodontosaurus ate only plants or also ate small animals. Its teeth suggest it was mostly a plant-eater, but it might have eaten meat sometimes.2