恐龍卡第 0648 張，共 2 027 張

Falcarius

名字的意思： “sickle cutter”1

吃：植物奇特的羽毛恐龍白堊紀早期

Falcarius was a strange dinosaur that looked like a mix between an ostrich, a gorilla, and Edward Scissorhands! It had a small head, a long neck, and huge curved claws on its hands. This dinosaur lived in what is now Utah, USA, about 139 to 134 million years ago.1

生存年代

143 到 133 百萬年前5

白堊紀早期

化石發現地

Grand County, Utah, USA1

長度

4 到 5 m (13 到 16 ft)1

體重

100 kg (220 lb)1

高度

1 到 1.4 m (3.3 到 4.6 ft)3 4

最高速度

時速約 30 公里（19 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 隻狗一樣重

跟 5 隻狗從鼻子接到尾巴一樣長跟 28 根香蕉頭尾相接一樣長跟 20 顆西瓜一樣重跟 5 個幼兒園小朋友一樣重跟 3 個小學生一樣重能在 12 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Falcarius 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)

Falcarius 時速約 30 公里 (19 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

Falcarius is one of the most primitive therizinosaurs ever found. It helps scientists understand how meat-eating dinosaurs turned into plant-eaters.2

Over 3,000 bones of Falcarius have been dug up from a single quarry in Utah. That's a lot of fossils!1

Falcarius had a long neck that let it reach leaves about 1.5 metres (5 feet) off the ground.1

Its hand claws were huge and curved, like sickles. That's how it got its name, which means 'sickle cutter'.1

Falcarius probably had feathers, like its close relatives from Asia.1

The smallest Falcarius was less than 1 metre (3.3 feet) long, but adults grew to about 4 to 5 metres (13 to 16 feet).1

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

?How big was Falcarius?

About 4 metres (13 feet) long and about 1.4 metres (4.5 feet) tall at the hip, weighing around 100 kilograms (220 pounds). The smallest known individual was less than 1 metre (3.3 feet) long.1 4

?What did Falcarius eat?

Mostly plants. Its leaf-shaped, serrated teeth were good for shredding leaves, but the pointed front teeth suggest it might have also eaten small animals like lizards sometimes.1

?Did Falcarius have feathers?

Scientists think yes. No feathers were found with its fossils, but its close feathered relatives from China make it very likely Falcarius had shaggy, hair-like proto-feathers.4

?How fast could Falcarius run?

Probably not very fast. Its lower legs were stubby, which suggests it no longer needed to run after prey like its meat-eating relatives did.4

?Why did Falcarius have long claws?

Its huge, curved hand claws were like sickles, which gave it the name 'sickle cutter'. They were probably used for gathering plants or maybe for defence.1 4

?Where was Falcarius found?

In what is now Utah, USA, in the Cedar Mountain Formation. A huge bonebed there has yielded thousands of bones from hundreds of individuals.1 2

給恐龍專家

學名: Falcarius
命名者: Kirkland et al. 20055
類群: 奇特的羽毛恐龍
科 / 演化支: Therizinosauria5
分類: Theropoda > Therizinosauria5
岩石的年代: 143 到 133 百萬年 (Berriasian / Valanginian)5
岩層: Cedar Mountain5
國家: 美國5
化石紀錄: The Paleobiology Database 收錄 2 筆5
發現: Falcarius was discovered in 1999 by fossil collector Lawrence Walker in Utah. Scientists named it in 2005.1
仍有爭議: Scientists are not sure if Falcarius was a pure plant-eater or if it also ate meat. Its front teeth are sharp and pointed, which might mean it ate small animals too.1