恐龍卡第 0890 張，共 2 027 張

Istiodactylus

名字的意思： “sail finger”1

吃：肉飛行爬蟲類白堊紀早期嚴格來說不是恐龍

Istiodactylus was a flying reptile with a wide, blunt snout full of sharp, interlocking teeth. It lived about 120 million years ago and probably used its teeth like a cookie cutter to slice meat from big dead animals.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

126 到 120 百萬年前3

白堊紀早期

化石發現地

Isle of Wight, England, and China1 3

翼展

4.3 到 5 m (14 到 16 ft)1

最高速度

時速約 69 公里（43 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？

翅膀跟 3 台腳踏車排成一排一樣寬能在 5.5 秒內飛越一整座足球場

Istiodactylus 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)

一匹飛奔的馬 時速約 65 公里 (40 mph)

Istiodactylus 時速約 69 公里 (43 mph)

一隻獵豹 時速約 100 公里 (62 mph)

酷東西

趣味知識

Its skull was about 45 centimetres (18 inches) long and had a semicircle of 48 closely spaced, triangular teeth that interlocked to form a razor-edged outline.1

The lower jaw had a tooth-like projection that fit into the upper teeth, helping it bite cleanly.1

Some of its back vertebrae were fused into a structure called a notarium, which helped support its large wings.1

Its hindlimbs were very short, while its forelimbs and wing-finger were huge, making it a soaring specialist.1

For much of the 20th century, it was the only pterosaur known from three-dimensionally preserved fossils, giving scientists a rare look at pterosaur anatomy.1 2

Its teeth were unlike the long, curved fish-grabbing teeth of other pterosaurs, so scientists think it did not catch fish but instead scavenged.2

It lived in river and coastal environments in southern England, where the climate was warm, about 20 to 25 °C (68 to 77 °F).1

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

?How big was Istiodactylus?

Its wingspan was about 4.3 to 5 metres. Its skull was about 45 centimetres long.1 2

?What did Istiodactylus eat?

It was a scavenger. It used its sharp, interlocking teeth like a cookie cutter to slice meat from dead animals.1 2

?Was Istiodactylus a dinosaur?

No, it was a pterosaur, a flying reptile that lived at the same time as dinosaurs but is not a dinosaur.1

?Could Istiodactylus fly?

Yes, it was a flying reptile with large wings. It may have been a soaring specialist, gliding long distances to find food.1

迷思破解王

迷思： Some people think Istiodactylus was a dinosaur because it lived with dinosaurs and had sharp teeth.

真相： Istiodactylus was a pterosaur, a flying reptile, not a dinosaur. Pterosaurs are a separate group of reptiles.1

給恐龍專家

學名: Istiodactylus
命名者: Howse et al. 20013
類群: 飛行爬蟲類
科 / 演化支: Ornithocheiroidea3
分類: Pterosauria > Pterodactyloidea3
岩石的年代: 126 到 120 百萬年 (Barremian / Aptian)3
岩層: Wessex, Vectis, Yixian3
國家: 英國, 中國3
化石紀錄: The Paleobiology Database 收錄 6 筆3
發現: The first fossil was found on the Isle of Wight in 1887, and in 1901 it was named Ornithodesmus latidens. In 2001, scientists moved it to its own genus, Istiodactylus.1
仍有爭議: Scientists debate whether the Chinese species Istiodactylus sinensis really belongs to this genus or to a different one, and whether it is the same as another pterosaur called Longchengpterus.1