恐龍卡第 0935 張，共 2 027 張

Juravenator

名字的意思： “Jura hunter”1

吃：肉肉食恐龍侏羅紀晚期

Juravenator was a tiny, speedy meat-eater that lived in what is now Germany during the Late Jurassic. It was only about as long as a cat, and it may have hunted at night.1 2

生存年代

152 到 149 百萬年前5

侏羅紀晚期

化石發現地

Schamhaupten, Bavaria, Germany1 2

長度

0.75 m (2.5 ft)1

最高速度

時速約 47 公里（29 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？

跟 4 根香蕉頭尾相接一樣長能在 7.7 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Juravenator 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)

Juravenator 時速約 47 公里 (29 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

Juravenator is known from a single, nearly complete skeleton of a juvenile, making it one of the best-preserved predatory dinosaurs from Europe.2 1

Unlike many other small theropods from the same time, Juravenator did not have feathers or feather-like structures on its tail.2 1

Scientists think Juravenator may have been nocturnal, based on the shape of its eye bones.1

In 2020, researchers found tiny round structures on the sides of Juravenator's tail that might have been sensory organs, like those on crocodile scales.1

The only known Juravenator fossil was found in a lagoon deposit, suggesting it may have drowned after being washed into the water.1

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

?How big was Juravenator?

About 75 centimetres (2.46 feet) long, which is roughly the size of a small dog.1

?Did Juravenator have feathers?

It had mostly scales on its tail and legs, but some faint impressions of possible simple feathers have been found on the top of the tail and hips.1

?What did Juravenator eat?

It was a small meat-eater that may have hunted fish and other small prey in shallow water.4

?Could Juravenator swim?

It may have waded in water to hunt, but it probably did not swim well. The only known fossil was found in a lagoon, possibly after drowning.1

?Was Juravenator nocturnal?

Yes, scientists think it may have been nocturnal based on the shape of its eye bones.1

?Where was Juravenator found?

In Germany, in the Franconian Jura region, from rocks that are about 151 to 152 million years old.1

迷思破解王

迷思： Juravenator was covered in bristly protofeathers.

真相： The fossil shows no signs of feathers or feather-like structures, only scales.2 1

給恐龍專家

學名: Juravenator
命名者: Göhlich and Chiappe 20065
類群: 肉食恐龍
科 / 演化支: Coelurosauria5
分類: Theropoda5
岩石的年代: 152 到 149 百萬年 (Kimmeridgian)5
岩層: Painten5
國家: 德國5
化石紀錄: The Paleobiology Database 收錄 1 筆5
發現: Juravenator was discovered in 1998 by volunteers Klaus-Dieter Weiß and Hans-Joachim Weiß in a quarry near Schamhaupten, Germany. It was named and described by Ursula Göhlich and Luis Chiappe in 2006.1 2
仍有爭議: Scientists are not sure if Juravenator was fully grown when it died, because the only known skeleton is from a juvenile.1