恐龍卡第 0431 張，共 2 027 張

Coelophysis

名字的意思： “hollow form”1

吃：肉肉食恐龍三疊紀晚期到侏羅紀早期

Coelophysis was a small, fast dinosaur that lived in the late Triassic period. It ran on two legs and had sharp teeth for eating meat. Hundreds of its skeletons have been found together in New Mexico, USA.1 2

生存年代

227 到 193 百萬年前4

三疊紀晚期到侏羅紀早期

化石發現地

New Mexico and Arizona, USA1 4

長度

2 到 3 m (6.6 到 9.8 ft)1 2

體重

18 kg 到 23 kg (40 到 51 lb)2

高度

1 m (3.3 ft)1

最高速度

時速約 43 公里（27 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 6 隻家貓一樣重

跟 3 隻狗從鼻子接到尾巴一樣長跟 17 根香蕉頭尾相接一樣長跟 5 顆西瓜一樣重能在 8.4 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Coelophysis 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)

Coelophysis 時速約 43 公里 (27 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

Coelophysis is one of the earliest known dinosaur genera, living about 215 to 201 million years ago.1

A huge pile of hundreds of Coelophysis skeletons was found at Ghost Ranch in New Mexico in 1947.2

Coelophysis had about 26 teeth in its upper jaw and 27 in its lower jaw.1

Its arms were flexible but weak, so it probably hunted animals much smaller than itself.1

Coelophysis was very light, weighing only about as much as a big dog.2

Some scientists once thought Coelophysis was the same as another dinosaur called Rioarribasaurus, but now most agree they are different.1

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

?How big was Coelophysis?

Coelophysis was small, growing up to about 3 metres (9.8 feet) long. It weighed only about 18 to 23 kg (40 to 50 pounds).1 2

?What did Coelophysis eat?

Coelophysis was a carnivore, meaning it ate meat. It probably hunted small, fast animals like lizards and early mammal relatives.1 2

?When did Coelophysis live?

Coelophysis lived during the Late Triassic period, about 215 to 201 million years ago.1

?Where was Coelophysis found?

Coelophysis fossils have been found in the southwestern United States, especially in New Mexico. Similar animals have been found in South Africa and Zimbabwe.1 3

?How fast could Coelophysis run?

Maybe up to about 43 km/h (27 mph), faster than a fast human runner. This is an estimate from its size. It had long legs and a light body, made for running.1 3

?Why is Coelophysis called Coelophysis?

The name Coelophysis means 'hollow form', because its limb bones were hollow. This made its body light and helped it be a swift hunter.3

?Did Coelophysis have feathers?

Scientists don't know for sure if Coelophysis had feathers. No feathers have been found with its fossils, but some related dinosaurs may have had them.1

?Was Coelophysis bigger than a human?

Coelophysis was about 3 metres (9.8 feet) long, which is longer than a human is tall, but it was very light, weighing only about 18 to 23 kg (40 to 50 pounds).1 2

?Could Coelophysis swim?

There is no evidence that Coelophysis could swim. It was a land-dwelling dinosaur that ran on two legs.1

?Is Coelophysis a dinosaur?

Yes, Coelophysis is a dinosaur. It was a small theropod dinosaur, which means it was a meat-eating dinosaur that walked on two legs.1 3

迷思破解王

迷思： Coelophysis swallowed its young whole.

真相： A fossil once thought to show a baby Coelophysis inside an adult is actually a different reptile or a mistake. There is no proof it ate its own young.1

給恐龍專家

學名: Coelophysis
命名者: Cope 18894
類群: 肉食恐龍
科 / 演化支: Coelophysidae4
分類: Theropoda > Coelophysoidea4
岩石的年代: 227 到 193 百萬年 (Norian / Sinemurian)4
岩層: Chinle, Petrified Forest, Tecovas4
國家: 美國4
化石紀錄: The Paleobiology Database 收錄 26 筆4
又名: Rioarribasaurus （舊名稱現在也算作同一種動物）4
發現: Edward Drinker Cope named Coelophysis in 1889, based on bones collected by David Baldwin in 1881 from New Mexico, USA.1 4
仍有爭議: Scientists still debate whether some fossils from other parts of the world belong to Coelophysis or to similar dinosaurs.1