恐龍卡第 1191 張，共 2 027 張

Mirarce

名字的意思： “wonderful winged messenger”1

吃：肉早期鳥類白堊紀晚期

Mirarce was a bird that lived about 76 million years ago. It was about the size of a turkey vulture and had strong wings and sharp talons for catching prey.1

生存年代

84 到 72 百萬年前4

白堊紀晚期

化石發現地

Kaiparowits Formation, Utah, USA4 1

體重

0.45 kg (1 lb)3

高度

0.6 m (2 ft)1

最高速度

時速約 31 公里（19 英里）

飛行, 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？

牠有多高？

牠有多重？

跟 4 根香蕉一樣重

比一隻家貓還輕能在 12 秒內飛越一整座足球場

Mirarce 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)

Mirarce 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

Mirarce is the most complete enantiornithine bird ever found in North America.2 1

Its fossil was discovered in 1992 but was not officially named until 2018.1

Mirarce had quill knobs on its ulna bone, which are bumps that help anchor flight feathers. This is the first time such knobs have been found in enantiornithine birds.2 1

It had a deeply keeled sternum (breastbone) and a narrow furcula (wishbone), features that improved its flight abilities.2

Mirarce lived during the Campanian age of the Late Cretaceous, about 76 to 74 million years ago.1

Its name combines Latin 'mirus' (wonderful) and the Greek messenger Arke, referring to its well-preserved flight-related features.1

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

?Was Mirarce a dinosaur?

Yes, Mirarce was a bird, and birds are a type of dinosaur called avialan theropods. So it was a dinosaur, but not a non-avian dinosaur like T. rex.1

?How big was Mirarce?

Mirarce was about the size of a turkey vulture, growing to around 60 cm tall. It weighed about 0.45 kg.1 3

?What did Mirarce eat?

Mirarce was a raptorial predator, meaning it hunted and ate other animals. It had powerful talons and leg tendons, similar to modern birds of prey.1

?When did Mirarce live?

Mirarce lived during the Campanian age of the Late Cretaceous, about 76 to 74 million years ago.1

給恐龍專家

學名: Mirarce
命名者: Atterholt et al. 20184
類群: 早期鳥類
科 / 演化支: Avisauridae4
分類: Theropoda > Avialae4
岩石的年代: 84 到 72 百萬年 (Campanian)4
岩層: Kaiparowits4
國家: 美國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: The fossil was collected in 1992 by Howard Hutchison in Utah. It was studied and named by Jesse Atterholt and colleagues in 2018, who called it Mirarce eatoni in honor of paleontologist Jeffrey Eaton.1
仍有爭議: Scientists are still debating how enantiornithine birds like Mirarce compare to modern birds in terms of flight abilities and evolutionary relationships.2