恐龍卡第 0432 張，共 2 027 張

Coelurus

名字的意思： “hollow tail”1

吃：肉肉食恐龍侏羅紀晚期到白堊紀早期

Coelurus was a small, fast meat-eater that lived in the Late Jurassic period. It ran on two long legs and had a long neck and tail. It probably hunted small animals like insects, mammals, and lizards.1

生存年代

158 到 113 百萬年前4

侏羅紀晚期到白堊紀早期

化石發現地

Wyoming and Utah, USA1 4

長度

1.8 到 2.4 m (5.9 到 7.9 ft)2 1

體重

13 kg 到 20 kg (29 到 44 lb)1

高度

0.7 m (2.3 ft)1

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？

牠有多重？

跟 5 隻家貓一樣重

跟 5 隻家貓從鼻子接到尾巴一樣長跟 13 根香蕉頭尾相接一樣長跟 4 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）

Coelurus 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)

Coelurus 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

Coelurus was one of the first small theropod dinosaurs named from the Morrison Formation.1

Its name means 'hollow tail' because its tail bones were thin-walled and hollow.1

For many years, scientists thought Coelurus was the same as Ornitholestes, but a 1980 study showed they are different.1

Coelurus had a long neck and long legs, making it a fast runner.1

The only complete skeleton of Coelurus was found at Como Bluff, Wyoming, in the 1870s.1

Coelurus lived alongside famous dinosaurs like Allosaurus, Stegosaurus, and Diplodocus.1

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

?How big was Coelurus?

About 2.4 metres (7.9 ft) long and 0.7 metres (2.3 ft) tall at the hip. It weighed around 13 to 20 kilograms (29 to 44 lb).1 3

?When did Coelurus live?

It lived during the Late Jurassic period, about 155 to 152 million years ago.1 2

?Where was Coelurus found?

Its fossils were found at Reed's Quarry 13 at Como Bluff, Wyoming, and two arm bones possibly from the Cleveland-Lloyd Dinosaur Quarry in Utah.1

?Who discovered Coelurus?

It was discovered and named by American paleontologist Othniel Charles Marsh in 1879.1

?How many species of Coelurus are there?

Only one species is considered valid today, Coelurus fragilis, though six other species were named in the past.1

迷思破解王

迷思： Coelurus is the same dinosaur as Ornitholestes.

真相： Scientists now know they are different genera, with Coelurus having longer legs and a different body shape.1

給恐龍專家

學名: Coelurus
命名者: Marsh 18794
類群: 肉食恐龍
科 / 演化支: Coelurosauria4
分類: Theropoda4
岩石的年代: 158 到 113 百萬年 ()4
岩層: Morrison, Arundel Clay4
國家: 美國4
化石紀錄: The Paleobiology Database 收錄 14 筆4
發現: Coelurus was named by American paleontologist Othniel Charles Marsh in 1879, based on a partial skeleton found in Wyoming.1 2
仍有爭議: Scientists are not sure exactly what Coelurus looked like because the only skeleton is incomplete, especially the skull.1