恐龍卡第 1206 張，共 2 027 張

Mononykus

名字的意思： “single claw”1

吃：昆蟲奇特的羽毛恐龍白堊紀晚期

Mononykus was a tiny, feathered dinosaur that lived in the Late Cretaceous. It had very short arms with one big claw, which it probably used to dig into termite mounds for food. It was about as long as a bicycle and weighed as much as a big cat.2 1

生存年代

84 到 66 百萬年前4

白堊紀晚期

化石發現地

Mongolia (Nemegt Formation, Gobi Desert)2 1

長度

1 到 1.2 m (3.3 到 3.9 ft)2 1

體重

3.5 kg (8 lb)2

高度

0.49 m (1.6 ft)

估計值

最高速度

時速約 31 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？

估計值

牠有多重？

跟 29 根香蕉一樣重

跟 2.5 隻家貓從鼻子接到尾巴一樣長跟 7 根香蕉頭尾相接一樣長大約跟一隻家貓一樣重跟 29 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）

Mononykus 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)

Mononykus 時速約 31 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

Mononykus had a single large claw on each hand, about 7.5 centimetres (3 inches) long. The other two claws were tiny or gone.2

Its inner ear bones look very similar to those of modern barn owls. Scientists think Mononykus might have had a face disc of feathers to help it hear better.2

Mononykus was covered in feathers. Its relative Shuvuuia had feather traces in its fossils, so scientists believe Mononykus did too.2

The first Mononykus fossil was found in 1987 in the Gobi Desert. It was a partial skeleton without a tail and only a few skull bones.2

Mononykus was originally named Mononychus in 1993, but that name was already used for a beetle. So scientists changed it to Mononykus later that year.2

Many museum skeletons of Mononykus are actually based on its close relative Shuvuuia, because early fossils were mixed up.2

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

?How big was Mononykus?

Mononykus was a very small dinosaur, about 1 to 1.2 metres long and weighing about 3.5 kilograms.2 1

?What did Mononykus eat?

Scientists think Mononykus probably ate insects, like termites, using its big claw to break open mounds. But the exact purpose of its arms is still a mystery.2 3

?Did Mononykus have feathers?

Yes, Mononykus likely had feathers. Its relative Shuvuuia had feather traces in fossils, so scientists believe Mononykus did too.2

?Why did Mononykus have one big claw?

Mononykus had one large claw on each hand, about 7.5 cm long. It may have used them to dig into termite mounds or insect nests, but the exact reason is still debated.2 3

?When did Mononykus live?

Mononykus lived during the Late Cretaceous, about 81 to 68 million years ago.1

?Where was Mononykus found?

Mononykus fossils were found in the Gobi Desert in Mongolia, specifically in the Nemegt Formation.2 1

迷思破解王

迷思： Mononykus was a flightless bird.

真相： Mononykus was a dinosaur, not a bird. It belonged to the alvarezsaurid group of theropod dinosaurs.2

給恐龍專家

學名: Mononykus
命名者: Perle et al. 19934
類群: 奇特的羽毛恐龍
科 / 演化支: Alvarezsauridae4
分類: Theropoda > Alvarezsauridae4
岩石的年代: 84 到 66 百萬年 (Campanian / Maastrichtian)4
岩層: Nemegt, Djadokhta4
國家: 蒙古4
化石紀錄: The Paleobiology Database 收錄 6 筆4
又名: Mononychus （舊名稱現在也算作同一種動物）4
發現: Mononykus was named in 1993 by Perle, Norell, Chiappe and Clark. The first fossil was found in 1987 in the Nemegt Formation of the Gobi Desert, Mongolia.2 1
仍有爭議: Scientists are not sure exactly what Mononykus used its strange, short arms and big claw for. Some think it dug for insects, but others are still debating.2