恐龍卡第 0950 張，共 2 027 張

Kayrasaurus

名字的意思： “Kayra lizard, after Kayra, the god of creation in Turkic shamanism”1

吃：植物奇特的羽毛恐龍白堊紀早期

Kayrasaurus was a big, plant-eating dinosaur with long claws on its hands. It lived in what is now China during the Early Cretaceous period. It was the largest of its kind found in the Jehol Biota, a famous fossil site.1

生存年代

126 到 120 百萬年前3

白堊紀早期

化石發現地

Dabangou village, near Beipiao, Liaoning Province, China1 2

長度

3.6 m (12 ft)1 2

體重

117 kg 到 274 kg (258 到 604 lb)1 2

高度

1.5 m (4.9 ft)

估計值

最高速度

時速約 29 公里（18 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 14 隻狗一樣重

跟 4 隻狗從鼻子接到尾巴一樣長跟 20 根香蕉頭尾相接一樣長跟 55 顆西瓜一樣重跟 14 個幼兒園小朋友一樣重跟 9 個小學生一樣重能在 12 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Kayrasaurus 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)

Kayrasaurus 時速約 29 公里 (18 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

Kayrasaurus had more teeth in its lower jaw than any other therizinosaur known.1

Its neck vertebrae were much longer than its back vertebrae, giving it a long neck.2

The claws on its hands were large and strongly curved, probably used for gathering plants or defense.1

The only known fossil is a nearly complete skeleton, but it is missing the legs and most of the pelvis.1

Kayrasaurus was about 1.6 times larger than its relative Beipiaosaurus, which lived at the same time and place.2

The fossil was flattened into nearly two dimensions, like a pancake, during the process of fossilization.1

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

?How big was Kayrasaurus?

Kayrasaurus was about 3.6 metres (12 ft) long and weighed an estimated 117 to 274 kilograms (258 to 604 lb). It was a large therizinosaur found in the Jehol Biota.1 2

?What did Kayrasaurus eat?

Kayrasaurus was a plant-eating dinosaur. Its leaf-shaped teeth and toothless beak at the front of its jaws helped it eat plants.1

?Did Kayrasaurus have feathers?

Yes, Kayrasaurus was a feathered theropod dinosaur. Its close relatives like Beipiaosaurus are known to have feathers, so scientists think Kayrasaurus had them too.1

?When did Kayrasaurus live?

Kayrasaurus lived during the Early Cretaceous period, about 125 million years ago (Barremian, Aptian ages).1

?Where was Kayrasaurus found?

Kayrasaurus was discovered in the Yixian Formation near Beipiao in Liaoning Province, China.1 2

?Was Kayrasaurus bigger than Beipiaosaurus?

Yes, Kayrasaurus was about 1.6 times larger than Beipiaosaurus. Beipiaosaurus was about 2.2 metres (7.2 ft) long, while Kayrasaurus was at least 3.6 metres (12 ft).1 2

?Why did Kayrasaurus have long claws?

Kayrasaurus had large, strongly curved claws on its hands. These were probably used for gathering plants or for defense.1

?Is Kayrasaurus a dinosaur?

Yes, Kayrasaurus is a dinosaur. It is a type of therizinosaurian theropod dinosaur.1

給恐龍專家

學名: Kayrasaurus
命名者: Liao et al. 20263
類群: 奇特的羽毛恐龍
科 / 演化支: Therizinosauria3
分類: Theropoda > Therizinosauria3
岩石的年代: 126 到 120 百萬年 (Barremian / Aptian)3
岩層: Yixian3
國家: 中國3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Kayrasaurus was named in 2026 by Chun-Chi Liao and colleagues based on a nearly complete skeleton found in the Yixian Formation of China. The specimen is housed at the Institute of Vertebrate Paleontology and Paleoanthropology in Beijing.1 2
仍有爭議: Scientists are not sure whether Kayrasaurus was more closely related to Beipiaosaurus or to other therizinosaurs. More fossils might help solve this.2