恐龍卡第 0421 張，共 2 027 張

Chupkaornis

名字的意思： “eastern bird”1

吃：肉早期鳥類白堊紀晚期

Chupkaornis was a flightless diving bird that lived in the sea around Japan. It had sharp teeth and used its strong legs to swim underwater and catch fish.2

生存年代

90 到 84 百萬年前4

白堊紀晚期

化石發現地

Hokkaido, Japan3 1

長度

0.7 到 0.8 m (2.3 到 2.6 ft)1

高度

0.36 m (1.2 ft)

估計值

最高速度

時速約 8 公里（5 英里）

游泳, 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

跟 1.5 隻家貓從鼻子接到尾巴一樣長跟 4 根香蕉頭尾相接一樣長小到能從椅子底下走過去能在 22 秒內游完一座大泳池（50 公尺）

Chupkaornis 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)

Chupkaornis 時速約 8 公里 (5 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)

一隻獵豹 時速約 100 公里 (62 mph)

酷東西

趣味知識

Chupkaornis is the oldest known hesperornithiform bird from Asia, living about 89 to 83 million years ago.2

Its name comes from the Ainu word 'chupka' meaning 'eastern', because it was found in East Asia, unlike its relative Hesperornis which means 'western bird'.1

Chupkaornis could not fly. Its wings were tiny, and it used its strong legs and feet to push itself through the water.2

The only known fossil of Chupkaornis includes nine bones: neck vertebrae, back vertebrae, part of the thigh bone, and part of the shin bone.1

It was discovered in 1996 by two amateur fossil collectors, Masatoshi and Yasuji Kera, and was named after them.1

Chupkaornis had special joints in its backbone that allowed it to bend its neck and body while diving.2

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

?How big was Chupkaornis?

Chupkaornis was about 70 to 80 centimetres (2.3 to 2.6 feet) long, roughly the size of a small penguin.1

?Could Chupkaornis fly?

No, Chupkaornis could not fly. It had very small wings and used its strong legs and webbed feet to swim underwater.1 2

?What did Chupkaornis eat?

Chupkaornis was a predatory diving bird that likely caught fish underwater with its sharp teeth.2

?When did Chupkaornis live?

Chupkaornis lived during the Late Cretaceous, about 89 to 83 million years ago.1

給恐龍專家

學名: Chupkaornis
命名者: Tanaka et al. 20184
類群: 早期鳥類
科 / 演化支: Hesperornithiformes4
分類: Theropoda > Avialae4
岩石的年代: 90 到 84 百萬年 (Coniacian / Santonian)4
岩層: Kashima4
國家: 日本4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Chupkaornis was discovered in August 1996 by Masatoshi and Yasuji Kera in Hokkaido, Japan. It was named and described by Tomonori Tanaka and colleagues in 2018.1 3
仍有爭議: Scientists are not sure exactly how large Chupkaornis was, because only a few bones have been found.1