恐龍卡第 1980 張，共 2 027 張

Yuanchuavis

名字的意思： “mythical bird from Chinese legend”1

吃：肉早期鳥類白堊紀早期

Yuanchuavis was a bird that lived in the age of dinosaurs. It had a fancy tail with two very long feathers, like a pintail. This bird probably used its long tail to show off to other birds.1 2

生存年代

143 到 100 百萬年前4

白堊紀早期

化石發現地

Liaoning Province, China1

最高速度

時速約 27 公里（17 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)

Yuanchuavis 時速約 27 公里 (17 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

Yuanchuavis lived about 120 million years ago, during the Early Cretaceous.1

Its tail feathers were 30 centimeters long, which is 1.3 times the length of its body.1

The long central tail feathers were probably used to attract mates, like a peacock's tail.1 2

Yuanchuavis belonged to a group of birds called enantiornithes, which were very common in the Mesozoic.1

This bird had a short, strong pygostyle (tailbone) to support its fancy tail feathers.1

Yuanchuavis had five teeth in its upper jaw, but the tip of its beak had no teeth.1

It lived in trees, based on its foot bones.1

Yuanchuavis 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Yuanchuavis 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。

給恐龍專家

學名: Yuanchuavis
命名者: Wang et al. 20214
類群: 早期鳥類
科 / 演化支: Pengornithidae4
分類: Theropoda > Avialae4
岩石的年代: 143 到 100 百萬年 (Berriasian / Albian)4
岩層: Jiufotang4
國家: 中國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Yuanchuavis was named in 2021 by Wang and colleagues. The fossil was found near Xiaoyaogou in Liaoning, China.1 3
仍有爭議: Scientists are not sure exactly how Yuanchuavis used its long tail feathers, but they think it was for showing off.1