恐龍卡第 0534 張，共 2 027 張

Dorygnathus

名字的意思： “spear jaw”1

吃：魚飛行爬蟲類侏羅紀早期嚴格來說不是恐龍

Dorygnathus was a flying reptile that lived during the Early Jurassic, about 180 million years ago. It had a short wingspan of around 1.5 metres (4.9 feet) and a long tail. Its most striking feature was its mouth full of large, curved fangs at the front and smaller teeth at the back.1

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

184 到 183 百萬年前4

侏羅紀早期

化石發現地

Germany (Baden-Württemberg and Lower Saxony) and Nancy, France1 2

翼展

1.5 到 1.7 m (4.9 到 5.6 ft)1

最高速度

時速約 45 公里（28 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？

跟 3 隻家貓從鼻子接到尾巴一樣長能在 8.4 秒內飛越一整座足球場

Dorygnathus 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)

Dorygnathus 時速約 45 公里 (28 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

Dorygnathus had different kinds of teeth: four large fangs in the upper jaw and three or four in the lower jaw at the front, with smaller, straighter teeth behind. This is called heterodonty and is rare in modern reptiles.1

The fifth toe on its hind feet was unusually long and pointed sideways. Scientists think it may have supported a membrane, like the one on its wings.1

Dorygnathus was a close relative of the later pterosaur Rhamphorhynchus, and lived at the same time as another pterosaur called Campylognathoides in Germany.1

Over 50 specimens of Dorygnathus have been found, many in slate quarries. The best fossils are kept at the State Museum of Natural History Stuttgart in Germany.1

Some Dorygnathus teeth show wear from eating hard food like crustaceans or mollusks, not just fish.1

The smallest known Dorygnathus had a wingspan of 60 centimetres (2 feet). Scientists think very young juveniles could not fly far over the open sea.1

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

?How big was Dorygnathus?

Dorygnathus had a wingspan of about 1.5 metres (4.9 feet), though some large individuals reached 1.7 metres (5.6 feet).1 2

?What did Dorygnathus eat?

Dorygnathus ate small fish, as shown by fossilised stomach contents. Some teeth also show wear from eating hard food like crustaceans or mollusks.1 3

?Could Dorygnathus fly?

Yes, Dorygnathus was a flying reptile. It had wings made of skin and other membranes, and its flight muscles attached to a small triangular breastbone.1

?Is Dorygnathus a dinosaur?

No, Dorygnathus was a pterosaur, a flying reptile that lived during the age of dinosaurs, but it was not a dinosaur.1

給恐龍專家

學名: Dorygnathus
命名者: Wagner 18604
類群: 飛行爬蟲類
科 / 演化支: Rhamphorhynchidae4
分類: Pterosauria > Rhamphorhynchidae4
岩石的年代: 184 到 183 百萬年 (Toarcian)4
岩層: Posidonia Shale, Posidonienschiefer, Marne de Flize4
國家: 德國, 法國4
化石紀錄: The Paleobiology Database 收錄 37 筆4
發現: The first fossils of Dorygnathus were found near Banz, Bavaria, Germany, and were described in 1830 by Carl Theodori as Ornithocephalus banthensis. In 1860, Johann Andreas Wagner gave it the name Dorygnathus, meaning 'spear jaw'.1
仍有爭議: Scientists still debate whether Dorygnathus walked on two legs or four. Some think it could walk on two legs because of its long tail, but most now believe all pterosaurs walked on all fours.1