恐龍卡第 1057 張，共 2 027 張

Limenavis

名字的意思： “bird of the threshold or limit bird”1

吃：肉早期鳥類白堊紀晚期

Limenavis was a bird that lived near the end of the age of dinosaurs, about 70 million years ago. It was one of the closest relatives of all modern birds that scientists have ever found in the fossil record.1

生存年代

72 到 66 百萬年前4

白堊紀晚期

化石發現地

Salitral Moreno, 20 km south of General Roca, Río Negro, Argentina1

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)

Limenavis 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

Limenavis is known only from a few broken wing bones, but these bones show it was more advanced than older birds like Ichthyornis.3

Its name means 'bird of the threshold' because it lived right at the doorstep of modern birds.1

Scientists have debated whether Limenavis was closer to modern birds or to more primitive ones, and different studies have placed it in different groups.1

Some scientists think Limenavis might be related to the ancestors of tinamous or rheas, which are birds that still live in South America today.1

Limenavis lived in what is now Patagonia, Argentina, during the Late Cretaceous period, about 70 million years ago.1

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

?Was Limenavis a dinosaur?

Yes, Limenavis is a genus of ornithuran dinosaurs from the Late Cretaceous. It is one of the closest relatives of modern birds.1

?How big was Limenavis?

Nobody knows for sure. Only a few broken wing bones have been found, so scientists cannot estimate its full size.1

?When did Limenavis live?

Limenavis lived about 70 million years ago, near the end of the Cretaceous period.1

?Where was Limenavis found?

Its fossils were found in Patagonia, Argentina, at a site called Salitral Moreno, about 20 km south of General Roca.1

給恐龍專家

學名: Limenavis
命名者: Clarke and Chiappe 20014
類群: 早期鳥類
科 / 演化支: Ornithurae4
分類: Theropoda > Avialae4
岩石的年代: 72 到 66 百萬年 (Maastrichtian)4
岩層: Allen4
國家: 阿根廷4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Limenavis was named by Julia Clarke and Luis Chiappe in 2001, based on wing bones found in the Allen Formation of Argentina.3 1
仍有爭議: Scientists still debate whether Limenavis was closer to modern birds or to more primitive birds like Ichthyornis.1