恐龍卡第 0575 張，共 2 027 張

Elbretornis

名字的意思： “El Brete bird”1

吃：肉早期鳥類白堊紀晚期

Elbretornis was a small, ancient bird that lived about 70 million years ago in what is now Argentina. It was a type of enantiornithine, a group of toothed birds that were common during the time of dinosaurs. This little bird probably ran on the ground and ate meat.1 2

生存年代

72 到 66 百萬年前2

白堊紀晚期

化石發現地

Estancia El Brete, Salta Province, Argentina1 2

長度

0.33 m (1.1 ft)1

體重

0.57 kg (1 lb)1

高度

0.24 m (0.8 ft)1

最高速度

時速約 29 公里（18 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 5 根香蕉一樣重

比一隻家貓還輕跟 5 根香蕉一樣重跟 10 塊積木排成一排一樣長小到能從椅子底下走過去能在 13 秒內飛越一整座足球場

Elbretornis 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)

Elbretornis 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

Elbretornis is known from only one partial skeleton, including a left humerus and parts of the wing and leg.1

It lived during the Maastrichtian age, the very end of the Cretaceous Period, just before the dinosaurs went extinct.1 2

The name Elbretornis honors the El Brete fossil site in Argentina, where many ancient birds have been found.1

Elbretornis was a ground-dwelling bird, and scientists think it was a good runner.2

It was about the size of a modern pigeon, measuring 33 cm (13 in) long and weighing around 570 g (20 oz).1

Some scientists wonder if Elbretornis might actually be the same as another bird from the same site, like Lectavis or Yungavolucris, but Elbretornis was smaller.1

Elbretornis 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Elbretornis 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: Elbretornis
命名者: Walker and Dyke 20092
類群: 早期鳥類
科 / 演化支: Euenantiornithes2
分類: Theropoda > Avialae2
岩石的年代: 72 到 66 百萬年 (Maastrichtian)2
岩層: Lecho2
國家: 阿根廷2
化石紀錄: The Paleobiology Database 收錄 2 筆2
發現: Elbretornis was named by Cyril A. Walker and Gareth J. Dyke in 2009. The only known fossil was found at the El Brete locality in Argentina.1 2
仍有爭議: Because only a few bones are known, scientists are not sure if Elbretornis is a distinct species or if it belongs to another enantiornithine bird from the same area.1