恐龍卡第 0579 張，共 2 027 張

Elopteryx

名字的意思： “marsh wing”1

吃：肉奇特的羽毛恐龍白堊紀晚期

Elopteryx was a small, bird-like dinosaur that lived on an island in the ancient sea. It had feathers and might have been able to fly, but scientists think it may have lost that ability later. It was a meat-eater that hunted small animals.1

生存年代

72 到 66 百萬年前5

白堊紀晚期

化石發現地

Romania, in the Hațeg Basin of Transylvania1 5

長度

0.9 m (3 ft)2

體重

2.7 kg (6 lb)2

高度

0.37 m (1.2 ft)

估計值

最高速度

時速約 29 公里（18 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 23 根香蕉一樣重

跟 2 隻家貓從鼻子接到尾巴一樣長跟 5 根香蕉頭尾相接一樣長大約跟一隻家貓一樣重跟 23 根香蕉一樣重小到能從椅子底下走過去能在 12 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Elopteryx 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)

Elopteryx 時速約 29 公里 (18 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

Elopteryx lived about 70 to 66 million years ago, near the very end of the Age of Dinosaurs.1

Its fossils were found on Hațeg Island, which was a large island in the ancient sea that covered parts of Europe.1

For a long time, scientists thought Elopteryx was a bird, not a dinosaur. Now they think it was a bird-like dinosaur.1

A 2024 study found that Elopteryx was secondarily flightless, meaning it evolved from flying ancestors but lost the ability to fly.1

Some scientists think Elopteryx might be the same animal as Balaur bondoc, another dinosaur from Romania.1

Elopteryx is known from only a few leg bones, so scientists are still unsure exactly what it looked like.1

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

?How big was Elopteryx?

Elopteryx was small, about the size of a large pelican or a big cormorant, based on its leg bones. Scientists are still unsure of its exact size because only a few fossils have been found.1 3

?Could Elopteryx fly?

Scientists are not certain if Elopteryx could fly. While some studies suggest it may have been flightless, more evidence is needed to confirm its flight capabilities.1 4

?What did Elopteryx eat?

Elopteryx was a meat-eater that hunted small animals. Its sharp teeth and claws helped it catch prey.1

?Is Elopteryx the same as Balaur bondoc?

Maybe. Some scientists think Elopteryx might be the same animal as Balaur bondoc, another dinosaur from Romania. More fossils are needed to be sure.1 4

?When did Elopteryx live?

Elopteryx lived about 70 to 66 million years ago, near the very end of the Age of Dinosaurs.1

?Where was Elopteryx found?

Elopteryx fossils were found on Hațeg Island, which was a large island in the ancient sea that covered parts of what is now Romania.1

迷思破解王

迷思： Elopteryx was a bird like a pelican or an owl.

真相： Scientists now think Elopteryx was a non-avian dinosaur, not a bird. It was a feathered theropod related to birds.1

給恐龍專家

學名: Elopteryx
命名者: Andrews 19135
類群: 奇特的羽毛恐龍
科 / 演化支: Alvarezsauridae5
分類: Theropoda > Alvarezsauridae5
岩石的年代: 72 到 66 百萬年 (Maastrichtian)5
岩層: Sînpetru, Râul Mare5
國家: 羅馬尼亞5
化石紀錄: The Paleobiology Database 收錄 3 筆5
發現: The famous Hungarian paleontologist Franz Nopcsa found the first bones near Sînpetru in Romania. In 1913, Charles William Andrews named the dinosaur Elopteryx nopcsai in his honor.1
仍有爭議: Scientists still debate whether Elopteryx was a bird-like dinosaur or an early bird, and whether it is the same species as Balaur bondoc.1