恐龍卡第 0050 張，共 2 027 張

Ajnabia

名字的意思： “stranger or foreigner”1

吃：植物鴨嘴龍類白堊紀晚期

Ajnabia was a small duck-billed dinosaur that lived in Africa at the very end of the Cretaceous. It was a surprise to scientists because duck-billed dinosaurs were not known from Africa before. Ajnabia probably swam or rafted across the sea from Europe to reach its home.2

生存年代

72 到 66 百萬年前4

白堊紀晚期

化石發現地

Sidi Chennane, Khouribga Province, Morocco1

長度

3.5 m (11 ft)2

體重

250 kg (551 lb)2

高度

1.5 m (4.9 ft)

估計值

最高速度

時速約 43 公里（27 英里）

跑步, 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

牠有多重？

跟 12 隻狗一樣重

跟 4 隻狗從鼻子接到尾巴一樣長跟 19 根香蕉頭尾相接一樣長跟 50 顆西瓜一樣重跟 13 個幼兒園小朋友一樣重跟 8 個小學生一樣重能在 8.4 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Ajnabia 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)

Ajnabia 時速約 43 公里 (27 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

Ajnabia is a lambeosaurine hadrosaur, a group of duck-billed dinosaurs that often had fancy head crests.2

It was one of the smallest duck-billed dinosaurs, only about 3.5 metres (11 feet) long.2

Ajnabia lived around 68 to 66 million years ago, just before the mass extinction that ended the age of dinosaurs.1

Its fossils were found in phosphate mines, which were once a shallow sea. The bones probably washed in from land.2

Ajnabia is related to European duck-billed dinosaurs, suggesting its ancestors crossed the sea from Europe to Africa.2

Only a few bones of Ajnabia have been found: part of the upper jaw, a piece of the lower jaw, and some teeth.1

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

?How big was Ajnabia?

About 3.5 metres (11 feet) long, similar in size to its relative Minqaria.1 2

?What did Ajnabia eat?

It was a herbivore, eating plants. As a duck-billed dinosaur, it had many teeth for chewing tough vegetation.1

?Did Ajnabia have a crest?

It probably did. Ajnabia was a lambeosaurine hadrosaur, a group known for having fancy head crests, though its fossils don't include the skull top.1

?How did Ajnabia get to Africa?

Scientists think it swam or rafted across the sea from Europe, because Africa was isolated by water at the time.1 2

?When did Ajnabia live?

About 68 to 66 million years ago, in the very latest Cretaceous, just before the asteroid impact that ended the dinosaurs.1

?Is Ajnabia a dinosaur?

Yes, it is a dinosaur. Specifically, it is a duck-billed dinosaur (hadrosaur) from the group Lambeosaurinae.1

給恐龍專家

學名: Ajnabia
命名者: Longrich et al. 20214
類群: 鴨嘴龍類
科 / 演化支: Hadrosauridae4
分類: Ornithischia > Ornithopoda > Iguanodontia > Hadrosauridae4
岩石的年代: 72 到 66 百萬年 (Maastrichtian)4
岩層: Couche III4
國家: 摩洛哥4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Ajnabia was named in 2021 by Longrich and colleagues. The fossils came from phosphate mines in Morocco and were described as a new species of duck-billed dinosaur.3
仍有爭議: Scientists are not sure exactly how Ajnabia got to Africa. It may have swum or rafted across the sea from Europe, but the details of this journey are still debated.2