恐龍卡第 0590 張，共 2 027 張

Eoalulavis

名字的意思： “dawn alula bird”1

吃：肉早期鳥類白堊紀早期

Eoalulavis was a tiny bird that lived about 125 million years ago in what is now Spain. It was one of the earliest birds to have an alula, a special little wing feather that helps birds fly slowly and turn sharply.1

生存年代

126 到 121 百萬年前2

白堊紀早期

化石發現地

Las Hoyas, Cuenca, Spain1 2

長度

0.17 m (0.6 ft)1

翼展

0.26 m (0.9 ft)1

體重

0.045 kg (0 lb)1

最高速度

時速約 21 公里（13 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？

牠有多重？

跟 0.5 根香蕉一樣重

比一隻家貓還輕跟 5 塊積木排成一排一樣長能在 18 秒內飛越一整座足球場

Eoalulavis 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)

Eoalulavis 時速約 21 公里 (13 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

Eoalulavis was about the size of a European goldfinch, weighing only about 45 grams (1.6 ounces).1

Its wingspan, including feathers, was only about 26 centimeters (10 inches), similar to a modern kingfisher.1

The name Eoalulavis means 'dawn alula bird' because it is one of the earliest birds known to have an alula, or 'bastard wing'.1

Scientists found the remains of its last meal inside the fossil: concentrated pieces of crustacean shells.1

Eoalulavis had a very thin, spear-shaped breastbone, unlike the wide breastbones of most early birds.1

It likely flew in a bounding style, flapping hard then tucking its wings to dive, like modern songbirds and woodpeckers.1

The fossil was preserved with feathers and soft tissues because it was buried quickly in a lake with special conditions.1

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

?What did Eoalulavis eat?

It ate small crustaceans. Scientists found pieces of crustacean shells in its fossilized belly, its last meal.1

?How big was Eoalulavis?

It was tiny, about the size of a European goldfinch. It weighed about 45 grams and had a wingspan of about 26 centimeters.1

?Could Eoalulavis fly well?

Yes, it was a good flier. It had an alula for slow, sharp turns and likely used bounding flight, flapping hard then diving with wings folded, like modern songbirds.1

?Is Eoalulavis a dinosaur?

Yes, it is a bird, and birds are a type of dinosaur called avialan dinosaurs. It lived about 125 million years ago.1

給恐龍專家

學名: Eoalulavis
命名者: Sanz et al. 19962
類群: 早期鳥類
科 / 演化支: Enantiornithes2
分類: Theropoda > Avialae2
岩石的年代: 126 到 121 百萬年 (Barremian)2
岩層: La Huérguina2
國家: 西班牙2
化石紀錄: The Paleobiology Database 收錄 1 筆2
發現: Eoalulavis was named in 1996 by Sanz and colleagues based on a single fossil skeleton found at Las Hoyas in Spain.1 2
仍有爭議: Scientists are not sure what its hind legs looked like because no leg bones have been found.1