恐龍卡第 0523 張，共 2 027 張

Diracodon

吃：植物劍龍類侏羅紀晚期到白堊紀晚期

Diracodon was a plated dinosaur that walked on four legs and munched on plants. It lived long ago during the Jurassic and Cretaceous periods. Scientists think it was a type of stegosaur, related to the famous Stegosaurus.3

生存年代

162 到 94 百萬年前3

侏羅紀晚期到白堊紀晚期

化石發現地

Fossils of Diracodon have been found in Wyoming, USA, in rocks of the Morrison Formation.1

長度

6.5 到 9 m (21 到 30 ft)2

體重

3.5 公噸到 6.9 公噸 (7,700 到 15,200 lb)2

高度

2.9 m (9.5 ft)2

最高速度

時速約 13 公里（8 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 台汽車一樣重

跟 2 台汽車排成一排一樣長跟 50 根香蕉頭尾相接一樣長大約跟一頭大象一樣重跟 1400 顆西瓜一樣重跟 9 整班小學生一樣重跟 15 隻北極熊一樣重能在 28 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Diracodon 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)

Diracodon 時速約 13 公里 (8 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

Diracodon was named by the famous paleontologist Othniel Charles Marsh in 1881.3

The name Diracodon means 'two-point tooth' or 'two-ray tooth', but scientists are not sure exactly what it refers to.1

Diracodon is known from a partial skeleton, including parts of the skull and jaws.1

Some scientists think Diracodon might be the same animal as Stegosaurus, because their fossils are very similar.1

Diracodon lived in the Late Jurassic, about 155 to 145 million years ago, in what is now North America.1

Like other stegosaurs, Diracodon probably had plates on its back and spikes on its tail, but we don't have direct evidence from its fossils.3

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

?What did Diracodon eat?

It was an herbivore, meaning it ate plants like low-lying bushes and shrubs.3 2

?How big was Diracodon?

Scientists estimate it was about 9 metres (30 feet) long and weighed over 6.9 metric tons (7.6 short tons).2

?Did Diracodon have plates on its back?

Yes, like other stegosaurs, it probably had kite-shaped upright plates along its back and spikes on its tail, though direct evidence from its fossils is missing.2

?When did Diracodon live?

It lived during the Late Jurassic, about 155 to 145 million years ago.2

?Where did Diracodon live?

Its fossils have been found in North America, especially in Wyoming and Colorado.3 2

?Is Diracodon a dinosaur?

Yes, it is a plated dinosaur (a stegosaur) that walked on four legs and ate plants.2

?Was Diracodon the same as Stegosaurus?

Many scientists think Diracodon might be the same animal as Stegosaurus, because their fossils are very similar.3

?How fast could Diracodon run?

Probably only about 13 km/h (8 mph) at its fastest, about as fast as a kid running fast. This is an estimate. As a large, heavy stegosaur it moved slowly on four legs.2

?What does the name Diracodon mean?

The name Diracodon means 'two-point tooth' or 'two-ray tooth', though scientists are not sure exactly what it refers to.2

?Could Diracodon swim?

There is no direct evidence, but as a land-dwelling dinosaur it likely could not swim well.3

迷思破解王

迷思： Diracodon is a completely separate dinosaur from Stegosaurus.

真相： Many paleontologists think Diracodon is actually the same animal as Stegosaurus, because its fossils are very similar. Some experts consider Diracodon a synonym of Stegosaurus.1

給恐龍專家

學名: Diracodon
命名者: Marsh 18813
類群: 劍龍類
科 / 演化支: Stegosauridae3
分類: Ornithischia > Stegosauria > Thyreophora3
岩石的年代: 162 到 94 百萬年 (Oxfordian / Cenomanian)3
岩層: Morrison3
國家: 美國3
化石紀錄: The Paleobiology Database 收錄 86 筆3
發現: Diracodon was named by Othniel Charles Marsh in 1881 based on a partial skeleton found in Wyoming, USA. The type specimen is stored at the Yale Peabody Museum.1
仍有爭議: Scientists still debate whether Diracodon is a valid genus or just a synonym of Stegosaurus. Some studies treat it as a nomen dubium, meaning the name is doubtful.1