恐龍卡第 1081 張，共 2 027 張

Longicrusavis

名字的意思： “long shin bird”1

吃：肉早期鳥類白堊紀早期

Longicrusavis was a small, long-legged bird that lived in ancient China. It had a long, thin beak and probably used its long legs to wade in shallow water looking for food.1

生存年代

126 到 120 百萬年前4

白堊紀早期

化石發現地

Dawangzhangzi village, Liaoning Province, China1 2

長度

0.1 到 0.3 m (0.3 到 1 ft)2

高度

0.14 m (0.5 ft)

估計值

最高速度

時速約 28 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

牠有多大？

牠有多長？

牠有多高？

估計值

跟 9 塊積木排成一排一樣長小到能從椅子底下走過去能在 14 秒內飛越一整座足球場

Longicrusavis 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)

Longicrusavis 時速約 28 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

Longicrusavis had very long legs compared to its arms, which helped it wade in water like a modern heron.1

Its fossil preserves carbonized traces of feathers, showing it had full plumage with visible colouration around the head and forelimbs.1

Longicrusavis had a long, fan-shaped tail that improved its flight, and scientists think it is one of the oldest birds with this type of tail.1

It belonged to a group called Hongshanornithidae, named after the Hongshan culture, one of China's oldest recorded cultures.1

Longicrusavis lived about 122 million years ago during the Early Cretaceous period.1

The only known fossil of Longicrusavis is nearly complete and belongs to an adult individual.1

Longicrusavis 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Longicrusavis 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: Longicrusavis
命名者: O'Connor et al. 20104
類群: 早期鳥類
科 / 演化支: Hongshanornithidae4
分類: Theropoda > Avialae4
岩石的年代: 126 到 120 百萬年 (Barremian / Aptian)4
岩層: Yixian4
國家: 中國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Longicrusavis was named by O'Connor, Gao, and Chiappe in 2010 based on a nearly complete skeleton found at Dawangzhangzi in Liaoning, China.1 3
仍有爭議: Scientists are not sure if Longicrusavis had teeth in its upper jaw, because the fossil shows tooth sockets but no teeth are preserved.1