恐龍卡第 1143 張，共 2 027 張

Martinavis

名字的意思： “Martin's bird”1

吃：肉早期鳥類白堊紀晚期

Martinavis was a prehistoric bird that lived alongside the last dinosaurs. It was about the size of a crow or a small seagull and could fly. It lived in what is now France, Argentina, and maybe North America.1

生存年代

84 到 66 百萬年前3

白堊紀晚期

化石發現地

France (Languedoc-Roussillon) and Argentina (Salta Province)1 2

長度

0.427 到 0.51 m (1.4 到 1.7 ft)1

體重

1.1 kg 到 1.8 kg (2 到 4 lb)1

高度

0.187 到 0.223 m (0.6 到 0.7 ft)1

最高速度

時速約 35 公里（22 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 15 根香蕉一樣重

跟 3 根香蕉頭尾相接一樣長比一隻家貓還輕跟 15 根香蕉一樣重跟 16 塊積木排成一排一樣長小到能從椅子底下走過去能在 11 秒內飛越一整座足球場

Martinavis 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)

Martinavis 時速約 35 公里 (22 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

Martinavis is known from only a few arm bones, mostly humeri. Scientists have named five different species based on these bones.1

The largest species, Martinavis vincei, was about 51 cm long and weighed around 1.8 kg. That is as heavy as a big chicken.1

Martinavis belonged to a group of ancient birds called enantiornithines. These birds had teeth and claws on their wings.1

Fossils of Martinavis have been found in France and Argentina. This shows that these birds lived in both Europe and South America during the Late Cretaceous.1

The type species, Martinavis cruzyensis, was named after the village of Cruzy in France where its fossil was found.1

Martinavis lived about 75 to 70 million years ago, during the Campanian and Maastrichtian stages of the Late Cretaceous.1

Martinavis 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Martinavis 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: Martinavis
命名者: Walker et al. 20073
類群: 早期鳥類
科 / 演化支: Euenantiornithes3
分類: Theropoda > Avialae3
岩石的年代: 84 到 66 百萬年 (Campanian / Maastrichtian)3
岩層: Lecho, Grès à Reptiles3
國家: 阿根廷, 法國3
化石紀錄: The Paleobiology Database 收錄 6 筆3
發現: Martinavis was named in 2007 by Cyril A. Walker, Eric Buffetaut, and Gareth J. Dyke. The first fossils were found in France and Argentina.1
仍有爭議: Scientists are not sure if some Martinavis bones actually belong to other enantiornithine birds from the same fossil sites, like Yungavolucris or Soroavisaurus.1