恐龍卡第 1964 張，共 2 027 張

Yatenavis

名字的意思： “stone bird”1

吃：肉早期鳥類白堊紀晚期

Yatenavis was a tiny bird that lived near the end of the age of dinosaurs. It was about the size of a sparrow and flew through the forests of what is now Patagonia in Argentina. This little bird is one of the southernmost enantiornithine birds ever found.2 1

生存年代

72 到 66 百萬年前3

白堊紀晚期

化石發現地

Estancia La Anita, Santa Cruz Province, Patagonia, Argentina2 1

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)

Yatenavis 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

Yatenavis is known from just a single bone: the lower half of a right wing bone (humerus).2 1

It lived about 72 to 66 million years ago, during the Maastrichtian stage of the Late Cretaceous.3

Yatenavis is the southernmost enantiornithine bird ever discovered anywhere in the world.2 1

It was one of the smallest enantiornithine birds from the Late Cretaceous of South America, about the size of a sparrow.2 1

Its name comes from the Aoni Kenk word for 'stone' and Latin for 'bird', meaning 'stone bird'.1

Yatenavis lived alongside other birds, including a larger enantiornithine and a bird called Kookne yeutensis.1

The fossil was found in the Chorrillo Formation, which was formed by a river system in a cold, high-latitude environment.2 1

Yatenavis 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Yatenavis 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: Yatenavis
命名者: Álvarez Herrera et al. 20233
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: Chorrillo3
國家: 阿根廷3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Yatenavis was named and described in 2023 by a team of Argentine and Japanese scientists, including Gerardo Álvarez Herrera and Federico Agnolín. The single fossil bone was found during a joint expedition in March 2022 at Estancia La Anita in Patagonia, Argentina.2 1
仍有爭議: Scientists are not sure exactly what Yatenavis looked like or how it behaved, because only a single wing bone has been found.2 1