恐龍卡第 0159 張，共 2 027 張

Arcticodactylus

名字的意思： “Arctic finger”1

吃：魚飛行爬蟲類三疊紀晚期嚴格來說不是恐龍

Arcticodactylus was a tiny flying reptile that lived during the Late Triassic in what is now Greenland. It was one of the smallest pterosaurs ever found, with wings about as wide as a ruler. It probably flew over ancient lakes and rivers, snatching fish with its many-pointed teeth.1 2

趣味小知識：翼龍在恐龍頭上飛來飛去，但牠們是恐龍的親戚，不是恐龍喔。

生存年代

227 到 206 百萬年前2

三疊紀晚期

化石發現地

Macknight Bjerg, Jameson Land, East Greenland1 2

翼展

0.24 m (0.8 ft)1

最高速度

時速約 52 公里（32 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？

牠的翅膀有多寬？

能在 7.3 秒內飛越一整座足球場

Arcticodactylus 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)

Arcticodactylus 時速約 52 公里 (32 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

Arcticodactylus is one of the smallest pterosaurs known, with a wingspan of only 24 centimeters (9.4 inches).1

It had 11 or 12 multi-cusped teeth on each side of its upper jaw, each with three to five points.1

Its thighbone was almost as long as its shinbone, and its wings were relatively short compared to its feet.1

The only known fossil was discovered in 1989 in Greenland and was originally thought to be a species of Eudimorphodon.1

Scientists can tell it was not a newborn because of its bone structure, but it was still growing when it died.1

Its closest relatives might have been Eudimorphodon or Austriadraco, other early pterosaurs.1

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

?Was Arcticodactylus a dinosaur?

No, it was a pterosaur, a flying reptile that is not a dinosaur.1

?How big was Arcticodactylus?

It was tiny, with a wingspan of only 24 centimeters (9.4 inches), making it one of the smallest known pterosaurs.1

?What did Arcticodactylus eat?

It probably ate fish, snatching them from ancient lakes and rivers with its many-pointed teeth.1

?When did Arcticodactylus live?

It lived during the Late Triassic, about 208 to 201 million years ago.1

給恐龍專家

學名: Arcticodactylus
命名者: Kellner 20152
類群: 飛行爬蟲類
科 / 演化支: Pterosauria2
分類: Pterosauria2
岩石的年代: 227 到 206 百萬年 (Norian)2
岩層: Fleming Fjord2
國家: 格陵蘭2
化石紀錄: The Paleobiology Database 收錄 1 筆2
發現: The first fossil was found in 1989 by William Amaral on Macknight Bjerg in Greenland. It was named Eudimorphodon cromptonellus in 2001, but in 2015 Alexander Kellner gave it its own genus, Arcticodactylus.1
仍有爭議: Scientists are not sure exactly how Arcticodactylus is related to other early pterosaurs, because it shares features with both Eudimorphodon and Austriadraco.1