恐龍卡第 1989 張，共 2 027 張

Yungavolucris

名字的意思： “Yungas bird with short feet”1

吃：肉早期鳥類白堊紀晚期

Yungavolucris was a small bird that lived about 70 to 66 million years ago, during the time of the dinosaurs. It had very short, wide feet, which made it look different from most other birds of its time.1

生存年代

72 到 66 百萬年前3

白堊紀晚期

化石發現地

Argentina, in the Lecho Formation at Estancia El Brete1 2

長度

0.5 m (1.6 ft)1

體重

1.75 kg (4 lb)1

高度

0.25 m (0.8 ft)1

最高速度

時速約 35 公里（22 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？

牠有多長？

牠有多高？

牠有多重？

跟 15 根香蕉一樣重

跟 3 根香蕉頭尾相接一樣長比一隻家貓還輕跟 15 根香蕉一樣重跟 16 塊積木排成一排一樣長小到能從椅子底下走過去能在 11 秒內飛越一整座足球場

Yungavolucris 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)

Yungavolucris 時速約 35 公里 (22 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

Yungavolucris is known only from a few foot bones, called tarsometatarsals. The most complete one is just over 4 centimeters (1.5 inches) long.1

Its foot bones were very wide, about twice as wide as those of its relatives Lectavis and Soroavisaurus, which lived at the same time and place.1

The outer toe bone (metatarsal IV) was very thin but as long as the middle toe bone, and the middle toe bone was bent outward, which is unusual.1

If its legs were short and wide, Yungavolucris might have been a slow, heavy bird that could not fly, about the size of a large chicken.1

Yungavolucris lived alongside other enantiornithean birds like Lectavis and Soroavisaurus, but it had much stouter feet than them.1

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

?Was Yungavolucris a dinosaur?

Yes, Yungavolucris was a bird, and birds are a type of dinosaur called avialan dinosaurs. It lived about 70 to 66 million years ago.1

?How big was Yungavolucris?

Nobody knows for sure, but if its legs were short and wide, it might have been about 50 cm long, 25 cm tall at the hip, and weighed about 1.75 kg, about the size of a large chicken.1

?Could Yungavolucris fly?

Maybe not. If its legs were both short and wide, it might have been a heavy, sluggish bird that could not fly, like a large chicken.1

迷思破解王

迷思： Some people think Yungavolucris was a dinosaur, but it was actually a bird.

真相： Yungavolucris was a type of enantiornithean, which is a group of ancient birds. Birds are related to dinosaurs, but they are not the same as non-avian dinosaurs.1

給恐龍專家

學名: Yungavolucris
命名者: Chiappe 19933
類群: 早期鳥類
科 / 演化支: Enantiornithes3
分類: Theropoda > Avialae3
岩石的年代: 72 到 66 百萬年 (Maastrichtian)3
岩層: Lecho3
國家: 阿根廷3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Yungavolucris was named by Luis M. Chiappe in 1993. The fossils were found in the Lecho Formation in Argentina, at a site called Estancia El Brete.1 2
仍有爭議: Scientists are not sure how Yungavolucris is related to other enantiornithean birds. Some studies place it close to avisaurids, but others do not, and it might even be the same species as another bird from the same site.1