恐龍卡第 0149 張，共 2 027 張

Archaeocursor

名字的意思： “ancient runner from Asia”1

吃：植物有喙的草食恐龍侏羅紀早期

Archaeocursor was a tiny, speedy plant-eater that lived in what is now China. It was one of the earliest beaked dinosaurs in Asia, and it was only about as long as a big dog!1

生存年代

200 到 184 百萬年前3

侏羅紀早期

化石發現地

near Congyansi subway station, Chongqing Municipality, southwestern China1

長度

1 m (3.3 ft)1

高度

0.33 m (1.1 ft)

估計值

最高速度

時速約 25 公里（16 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

跟 2 隻家貓從鼻子接到尾巴一樣長跟 6 根香蕉頭尾相接一樣長小到能從椅子底下走過去能在 14 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Archaeocursor 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)

Archaeocursor 時速約 25 公里 (16 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

Archaeocursor is known from just one fossil: a nearly complete left thigh bone (femur) that is 93 millimetres long.1

It lived during the Early Jurassic period, about 199 to 184 million years ago, in the Sinemurian to Pliensbachian stages.3

Scientists think Archaeocursor was a young adult when it died, because of the growth rings in its thigh bone.1

This dinosaur is the oldest ornithischian (beaked plant-eater) ever found in Asia.1

Archaeocursor was about the same size as Eocursor, another early ornithischian from South Africa.1

Its name means 'ancient runner from Asia', because it was built for speed with long legs.1

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

?How big was Archaeocursor?

About 1 metre (3.3 feet) long, which is roughly the size of a big dog.2 1

?What did Archaeocursor eat?

It was a plant-eater, like other ornithischian dinosaurs.2

?When did Archaeocursor live?

It lived during the Early Jurassic period, about 199 to 184 million years ago.2 1

?Why is it called Archaeocursor?

Its name means ancient runner because it was an ancient dinosaur built for speed.2

給恐龍專家

學名: Archaeocursor
命名者: Yao et al. 20253
類群: 有喙的草食恐龍
科 / 演化支: Ornithischia3
分類: Ornithischia3
岩石的年代: 200 到 184 百萬年 (Sinemurian / Pliensbachian)3
岩層: Ziliujing3
國家: 中國3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Archaeocursor was named in 2025 by a team of scientists including X. Yao, Q. Zhao, T. Ren, G. Wei, and X. Xu. The single fossil was found near a subway station in Chongqing, China.3 1
仍有爭議: Scientists are not sure exactly how Archaeocursor is related to other early ornithischians. The family tree shows it as the earliest-diverging ornithischian in Asia, but this is not strongly supported.1