恐龍卡第 0323 張，共 2 027 張

Caihong

名字的意思： “rainbow big crest”1

吃：肉肉食恐龍侏羅紀晚期

Caihong was a tiny, feathered dinosaur that lived about 161 million years ago. It had shiny, rainbow-colored feathers on its head, chest and tail, like a hummingbird. This little meat-eater was only as long as a ruler and weighed about as much as a can of soup.1 2

生存年代

162 到 155 百萬年前3

侏羅紀晚期

化石發現地

Gangou, Qinglong County, Hebei Province, China1 2

長度

0.4 m (1.3 ft)2

翼展

0.44 m (1.4 ft)2

體重

0.475 kg (1 lb)1 2

高度

0.16 m (0.5 ft)

估計值

最高速度

時速約 17 公里（11 英里）

跑步, 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

牠有多重？

跟 4 根香蕉一樣重

跟 2 根香蕉頭尾相接一樣長比一隻家貓還輕跟 12 塊積木排成一排一樣長小到能從椅子底下走過去能在 21 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Caihong 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)

Caihong 時速約 17 公里 (11 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

Caihong had a big bony crest on its skull, which is unusual for a close relative of birds.1 2

Its tail feathers were asymmetrical, like the flight feathers of modern birds, and gave it a tail surface area even larger than that of Archaeopteryx.1

Caihong had longer arm and leg feathers than its relative Anchiornis.1

Its forearm bones (ulna and radius) were longer than its upper arm bone (humerus), a feature seen in more advanced birds.1

The fossil preserves nanostructures that look like the melanosomes that create iridescent colors in living birds, so Caihong probably had shiny, rainbow-like feathers.1 2

Caihong lived during the Oxfordian age of the Jurassic Period, about 161 million years ago.1 2

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

?How big was Caihong?

About 40 centimetres (16 inches) long and weighed about 475 grams (16.8 ounces). That is about as long as a ruler and as heavy as a can of soup.2

?Did Caihong have feathers?

Yes, it had feathers on its arms, legs, tail, head and chest. The fossil even preserved the feather shapes and colour-making structures.2 1

?What did Caihong eat?

It was a meat-eater. Its sharp, recurved teeth show it ate small animals like insects or lizards.2

?Why did Caihong have a crest?

Scientists think the bony crest on its skull was used for showing off. It may have helped attract mates or signal to others.1

?Could Caihong fly?

It had long arm and tail feathers with asymmetrical vanes, like modern flying birds, and longer forearms than its upper arms. This suggests it could glide or flap, but it probably was not a strong flier.1 2

?When did Caihong live?

It lived about 161 million years ago, during the Oxfordian age of the Late Jurassic Period.2 1

給恐龍專家

學名: Caihong
命名者: Hu et al. 20183
類群: 肉食恐龍
科 / 演化支: Paraves3
分類: Theropoda3
岩石的年代: 162 到 155 百萬年 (Oxfordian)3
岩層: Tiaojishan3
國家: 中國3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: A farmer named Yang Jun found the skeleton in a quarry near Nanshimenzi Village, China, in February 2014. It was later named Caihong juji in 2018 by a team of scientists led by Hu Dongyu.1 2
仍有爭議: Scientists are still debating exactly how Caihong used its long feathers and asymmetrical tail, and whether it could fly or just glide.1