恐龍卡第 0271 張，共 2 027 張

Bicentenaria

名字的意思： “two hundred year anniversary”1

吃：肉肉食恐龍白堊紀早期

Bicentenaria was a small, fast meat-eating dinosaur that lived in what is now Argentina. It was about as long as a car and weighed as much as a big dog. It hunted smaller animals and maybe even lived in groups.4 2

生存年代

113 到 110 百萬年前4

白堊紀早期

化石發現地

Río Negro Province, northern Patagonia, Argentina2

長度

2.5 到 3 m (8.2 到 9.8 ft)1 2

體重

40 kg (88 lb)2

高度

0.99 m (3.2 ft)

估計值

最高速度

時速約 48 公里（30 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 2 隻狗一樣重

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 10 隻家貓一樣重跟 8 顆西瓜一樣重跟 2 個幼兒園小朋友一樣重跟 1 個小學生一樣重能在 7.5 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Bicentenaria 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)

Bicentenaria 時速約 48 公里 (30 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

Bicentenaria was named to celebrate 200 years of Argentina's first independent government.1

Its fossils were found in a small area with bones from at least three different individuals.2

Scientists think Bicentenaria may have lived in groups because many skeletons were buried together.2

It lived alongside huge predators like Giganotosaurus, but was much smaller and more lightly built.2

Bicentenaria had special teeth with serrations only at the base of the crown.2

It is one of the earliest known coelurosaurs from the southern continents.2

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

?How big was Bicentenaria?

Bicentenaria was about 2.5 to 3 metres (8 to 10 feet) long and weighed around 40 kilograms (88 pounds). That is about as long as a small motorcycle and as heavy as a big dog.1 3

?Did Bicentenaria live in groups?

Yes, scientists think Bicentenaria may have lived in groups because the fossils of at least three different individuals were found buried together in a small area.1 3

?What did Bicentenaria eat?

Bicentenaria was a meat-eating dinosaur that hunted smaller animals. Its sharp teeth and claws helped it catch prey.1

?When did Bicentenaria live?

Bicentenaria lived during the Early Cretaceous period, about 100 million years ago.1

給恐龍專家

學名: Bicentenaria
命名者: Novas et al. 20124
類群: 肉食恐龍
科 / 演化支: Coelurosauria4
分類: Theropoda4
岩石的年代: 113 到 110 百萬年 (Albian)4
岩層: Candeleros4
國家: 阿根廷4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Bicentenaria was discovered by Raul Spedale in 1998 on the shore of a reservoir in Argentina. It was named and described by Fernando Novas and colleagues in 2012.2
仍有爭議: Scientists are still debating exactly where Bicentenaria fits in the dinosaur family tree, but they think it is a very early coelurosaur.2