恐龍卡第 0454 張，共 2 027 張

Cretornis

名字的意思： “chalk bird”1

吃：魚飛行爬蟲類白堊紀晚期嚴格來說不是恐龍

Cretornis was a flying reptile that lived about 92 million years ago. It had a wingspan as wide as a bicycle is long and probably ate fish. Its fossils were found in the Czech Republic.1 3

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

94 到 90 百萬年前3

白堊紀晚期

化石發現地

Zářecká Lhota near Choceň, Czech Republic3 1

翼展

1.5 到 1.6 m (4.9 到 5.2 ft)1 2

最高速度

時速約 43 公里（27 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 8.8 秒內飛越一整座足球場

Cretornis 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)

Cretornis 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

Cretornis was first thought to be a bird, not a pterosaur. The scientist who named it, Antonín Frič, called it a 'chalk bird' because he thought it was a toothed bird like Ichthyornis.1

The fossils were found by a woman named Mrs. Tomková, who worked at a gambling table in Choceň. She told a local pharmacist, František Hlaváč, about the bones, and he collected them.1

Cretornis is the only pterosaur ever found in the Czech Republic. Its bones come from a sandstone quarry that was being used to get gravel for road repairs.1 2

The upper arm bone (humerus) of Cretornis is only 76 millimeters long, which is about the length of three fingers side by side.1

Scientists are not sure exactly what group of pterosaurs Cretornis belongs to. Some think it is an azhdarchoid, others think it is a nyctosaurid.1 2

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

?How big was Cretornis?

Its wingspan was about 1.5 to 1.6 metres (4.9 to 5.2 feet), which is as wide as a bicycle. Its upper arm bone was only 76 millimetres (3 inches) long.1 2

?What did Cretornis eat?

It probably ate fish, like many other pterosaurs that lived near the sea.1

?Is Cretornis a dinosaur?

No, Cretornis is a pterosaur, a flying reptile that lived during the time of dinosaurs, but it is not a dinosaur itself.1

給恐龍專家

學名: Cretornis
命名者: Fritsch 18813
類群: 飛行爬蟲類
科 / 演化支: Azhdarchoidea3
分類: Pterosauria > Pterodactyloidea3
岩石的年代: 94 到 90 百萬年 (Turonian)3
岩層: Jizera3
國家: 捷克3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Cretornis was named in 1881 by Czech paleontologist Antonín Frič. He first thought the bones were from a bird, but later scientists realized it was a pterosaur.1 3
仍有爭議: Scientists still debate whether Cretornis was an azhdarchoid pterosaur or a nyctosaurid. Its exact place in the pterosaur family tree is not settled.1 2