恐龍卡第 0285 張，共 2 027 張

Bonapartenykus

名字的意思： “Bonaparte's claw”1

吃：肉肉食恐龍白堊紀晚期

Bonapartenykus was a meat-eating dinosaur that lived in South America near the end of the Age of Dinosaurs. It was one of the biggest members of its family, the alvarezsauroids, and it had a special claw on each hand.1

生存年代

72 到 66 百萬年前2

白堊紀晚期

化石發現地

Argentina, in the Río Negro Province, from the Allen Formation1 2

長度

2.5 到 3.3 m (8.2 到 11 ft)1

體重

43 kg 到 72 kg (95 到 159 lb)1

高度

1.1 m (3.6 ft)

估計值

最高速度

時速約 50 公里（31 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 4 隻狗一樣重

跟 3 隻狗從鼻子接到尾巴一樣長跟 18 根香蕉頭尾相接一樣長跟 14 顆西瓜一樣重跟 4 個幼兒園小朋友一樣重跟 2 個小學生一樣重能在 7.2 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Bonapartenykus 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)

Bonapartenykus 時速約 50 公里 (31 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

Bonapartenykus is the largest known alvarezsauroid, measuring up to 3.3 metres (10.8 feet) long and weighing up to 72 kilograms (159 pounds).1

Its fossils were found with two incomplete eggs and many eggshell pieces, which were given their own scientific name, Arriagadoolithus.1

The eggs were found less than 20 centimetres (7.9 inches) away from the skeleton, so scientists think they may belong to Bonapartenykus.1

Bonapartenykus had a fused hip bone and a fused shoulder blade, which are unusual features that help scientists tell it apart from other dinosaurs.1

It lived between 72 and 66 million years ago, during the Maastrichtian age of the Late Cretaceous period.2

The name 'ultimus' means 'latest', because it was one of the youngest alvarezsauroids from South America.1

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

?How big was Bonapartenykus?

It was about 2.5 to 3.3 metres (8.2 to 10.8 feet) long and weighed 43 to 72 kilograms (95 to 159 pounds). That makes it the largest known alvarezsauroid.1

?What did Bonapartenykus eat?

It was a meat-eating dinosaur, so it probably ate small animals like lizards or insects. Its special claw may have helped it catch prey.1

?Did Bonapartenykus lay eggs?

Yes, its fossils were found with two eggs and many eggshell pieces nearby. Scientists think the eggs belonged to Bonapartenykus and gave them the name Arriagadoolithus.1

?When did Bonapartenykus live?

It lived between 72 and 66 million years ago, near the end of the Age of Dinosaurs. Its name 'ultimus' means 'latest' because it was one of the youngest alvarezsauroids from South America.1

迷思破解王

迷思： Some people think Bonapartenykus was a bird because it had feathers and a beak-like snout.

真相： Bonapartenykus was a dinosaur, not a bird. It belonged to a group called alvarezsauroids, which are close relatives of birds but still dinosaurs.1

給恐龍專家

學名: Bonapartenykus
命名者: Agnolin et al. 20122
類群: 肉食恐龍
科 / 演化支: Alvarezsauroidea2
分類: Theropoda2
岩石的年代: 72 到 66 百萬年 (Maastrichtian)2
岩層: Allen2
國家: 阿根廷2
化石紀錄: The Paleobiology Database 收錄 3 筆2
發現: The first skeleton was found in Argentina and was described in 2009 as an unknown alvarezsaurid. In 2012, scientists Federico Agnolin, Jaime Powell, Fernando Novas, and Martin Kundrát named it Bonapartenykus ultimus.1
仍有爭議: Scientists are not sure if the eggs found with Bonapartenykus really belong to it, because they were not inside the body. They might belong to another animal.1