恐龍卡第 0261 張，共 2 027 張

Beipiaosaurus

名字的意思： “Beipiao lizard”1

吃：植物奇特的羽毛恐龍白堊紀早期

Beipiaosaurus was a feathered dinosaur that looked a bit like a big, fluffy bird. It had long, simple feathers on its neck and tail, and scientists think it was covered in downy fuzz. This dinosaur was a plant-eater, even though it belonged to the meat-eating dinosaur group!1 2

生存年代

126 到 120 百萬年前4

白堊紀早期

化石發現地

Liaoning Province, China1 4

長度

2.2 m (7.2 ft)1

體重

27 kg (60 lb)1

高度

0.9 m (3 ft)

估計值

最高速度

時速約 27 公里（17 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？

估計值

牠有多重？

跟 7 隻家貓一樣重

跟 4 隻家貓從鼻子接到尾巴一樣長跟 12 根香蕉頭尾相接一樣長跟 5 顆西瓜一樣重能在 13 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Beipiaosaurus 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)

Beipiaosaurus 時速約 27 公里 (17 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

Beipiaosaurus had two kinds of feathers: a fluffy downy coat and much longer, stiff, ribbon-like feathers called EBFFs (elongated broad filamentous feathers). These long feathers could be up to 15 cm (6 inches) long.1

Before the discovery of Yutyrannus, Beipiaosaurus was the heaviest feathered dinosaur known from direct fossil evidence.1

Its feathers were brownish, as scientists found out by studying the shape of pigment cells preserved in the fossils.1

Beipiaosaurus had a shorter neck than most other therizinosaurs, which usually have long necks for reaching high plants.1

The name Beipiaosaurus inexpectus means 'unexpected Beipiao lizard' because its features surprised the scientists who first studied it.1

Beipiaosaurus lived about 125 million years ago during the Early Cretaceous period.1 4

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

?How big was Beipiaosaurus?

Beipiaosaurus was a small dinosaur, about 2.2 metres (7.2 feet) long and weighing around 27 kilograms (60 pounds). Some estimates suggest it was a bit shorter at 1.8 metres (5.9 feet) and heavier at 50 kilograms (110 pounds).1 3

?What did Beipiaosaurus eat?

Beipiaosaurus was mostly a plant-eater, even though it belonged to the meat-eating dinosaur group. Its teeth and body structure show it was generally herbivorous.1 3

?Did Beipiaosaurus have feathers?

Yes, Beipiaosaurus had two kinds of feathers: a fluffy downy coat and much longer, stiff, ribbon like feathers called EBFFs. These long feathers could be up to 15 centimetres (6 inches) long.1

?When did Beipiaosaurus live?

Beipiaosaurus lived during the Early Cretaceous period, about 125 million years ago. Its fossils were found in the Yixian Formation in China.1 3

?Where was Beipiaosaurus found?

Beipiaosaurus fossils were discovered in Liaoning Province, China, near the city of Beipiao. The first remains were found in 1996 by a farmer named Li Yinxian.1

?What does the name Beipiaosaurus mean?

The name Beipiaosaurus means 'Beipiao lizard' after the city in China where it was found. The species name 'inexpectus' means 'unexpected' in Latin, because its features surprised scientists.1 3

?Was Beipiaosaurus bigger than T. rex?

No, Beipiaosaurus was much smaller than T. rex. It was only about 2.2 metres (7.2 feet) long and weighed around 27 kilograms (60 pounds), while T. rex was over 12 metres long.1

?What color were Beipiaosaurus feathers?

Scientists studied pigment cells in the fossils and found that Beipiaosaurus feathers were brownish. The melanosomes (color cells) were sphere-shaped, which gives a dark brown color.1

迷思破解王

迷思： Many people think all feathered dinosaurs could fly or glide.

真相： Beipiaosaurus had feathers but could not fly. Its feathers were probably for display, insulation, or both.1

給恐龍專家

學名: Beipiaosaurus
命名者: Xu et al. 19994
類群: 奇特的羽毛恐龍
科 / 演化支: Therizinosauroidea4
分類: Theropoda > Therizinosauria4
岩石的年代: 126 到 120 百萬年 (Barremian / Aptian)4
岩層: Yixian4
國家: 中國4
化石紀錄: The Paleobiology Database 收錄 2 筆4
發現: A farmer named Li Yinxian found the first Beipiaosaurus fossil in 1996 near Sihetun, China. Scientists Xu Xing, Tang Zhilu, and Wang Xiaolin named it in 1999.1
仍有爭議: Scientists are still debating whether the long, ribbon-like feathers of Beipiaosaurus were used for display, to keep warm, or for some other purpose.1