恐龍卡第 1829 張，共 2 027 張

Trierarchuncus

名字的意思： “captain hook”1

吃：昆蟲奇特的羽毛恐龍白堊紀晚期

Trierarchuncus was a tiny, feathered dinosaur that lived right at the end of the age of dinosaurs. It had short arms with just one big claw on each hand, like a hook. It ran fast on its long legs and probably ate insects and small animals.1

生存年代

72 到 66 百萬年前3

白堊紀晚期

化石發現地

Montana, USA, and possibly Wyoming, USA1 3

長度

0.5 到 1 m (1.6 到 3.3 ft)1

體重

2 kg 到 5 kg (4 到 11 lb)1

高度

0.3 到 0.5 m (1 到 1.6 ft)1

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 1 隻家貓一樣重

跟 2 隻家貓從鼻子接到尾巴一樣長跟 6 根香蕉頭尾相接一樣長大約跟一隻家貓一樣重跟 42 根香蕉一樣重能在 12 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Trierarchuncus 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)

Trierarchuncus 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

Trierarchuncus is the youngest known alvarezsaurid, meaning it lived just before the big extinction 66 million years ago.1

Its name means 'captain hook' because its hand had only one big claw, like a pirate's hook.1

Scientists think Trierarchuncus was covered in feathers, like many of its relatives.1

It lived alongside famous dinosaurs like Tyrannosaurus and Triceratops in the Hell Creek area.1

The first fossils were found in Montana in 1980, but it wasn't officially named until 2020.1

Trierarchuncus had a bird-like head and long legs, so it could probably run quickly.1

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

?How big was Trierarchuncus?

No one knows its exact size, but it was a small dinosaur. Its hand claws are only a few centimetres long, so it was probably about the size of a modern turkey or a small dog.1 2

?What did Trierarchuncus eat?

It probably ate insects and small animals. Scientists think it used its single big claw to tear apart logs and search for bugs, like an anteater.1 2

?When did Trierarchuncus live?

It lived right at the end of the age of dinosaurs, about 66 million years ago. It went extinct in the big mass extinction that killed most dinosaurs.1

?Did Trierarchuncus have feathers?

Yes. Like its relatives, Trierarchuncus was covered in feathers. It had a bird-like head and long legs.1

迷思破解王

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

真相： Trierarchuncus was a dinosaur, not a bird. It belonged to a group called alvarezsaurids, which were feathered theropod dinosaurs.1

給恐龍專家

學名: Trierarchuncus
命名者: Fowler et al. 20203
類群: 奇特的羽毛恐龍
科 / 演化支: Alvarezsauridae3
分類: Theropoda > Alvarezsauridae3
岩石的年代: 72 到 66 百萬年 (Maastrichtian)3
岩層: Hell Creek3
國家: 美國3
化石紀錄: The Paleobiology Database 收錄 6 筆3
發現: The first bones were found in Montana in 1980, but the dinosaur was not named until 2020 by Denver Fowler and colleagues. They named it Trierarchuncus prairiensis based on claw bones and other fragments.1
仍有爭議: Scientists are not sure exactly what Trierarchuncus ate. It might have eaten insects, but it could also have eaten small animals or eggs.1