恐龍卡第 0587 張，共 2 027 張

Enigmacursor

名字的意思： “puzzling or mysterious runner”1

吃：植物有喙的草食恐龍侏羅紀晚期到白堊紀早期

Enigmacursor was a tiny, speedy plant-eater that lived alongside giants like Diplodocus and Stegosaurus. It had long legs and big feet, perfect for dashing through the floodplains of ancient Colorado.1

生存年代

155 到 143 百萬年前4

侏羅紀晚期到白堊紀早期

化石發現地

Colorado, USA, in the Morrison Formation1 2

長度

1.8 m (5.9 ft)1

高度

0.58 m (1.9 ft)

估計值

最高速度

時速約 39 公里（24 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 4 隻家貓從鼻子接到尾巴一樣長跟 10 根香蕉頭尾相接一樣長能在 9.2 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Enigmacursor 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)

Enigmacursor 時速約 39 公里 (24 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

Enigmacursor is known from a single, unusually complete skeleton, but the skull is still missing.1

Its closest relative is Yandusaurus hongheensis, a dinosaur from the Late Jurassic of China.3

The name 'Enigmacursor' means 'puzzling runner' because scientists were confused for a long time about small plant-eaters from the Morrison Formation.1

It lived between 152 and 145 million years ago, during the Late Jurassic Period.1

Enigmacursor was a neornithischian dinosaur, a group of beaked, plant-eating ornithischians.2

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

?How big was Enigmacursor?

Enigmacursor was about 1.8 metres (6 feet) long. It was one of the smaller dinosaurs in the Morrison Formation.1

?What did Enigmacursor eat?

Enigmacursor was a herbivore, meaning it ate plants. It likely fed on ferns and cycads that grew on the floodplains where it lived.1

?When did Enigmacursor live?

Enigmacursor lived during the Late Jurassic Period, about 152 to 145 million years ago. It shared its home with dinosaurs like Diplodocus and Stegosaurus.1

?Where was Enigmacursor found?

Enigmacursor was found in Colorado, USA, in a famous fossil site called the Morrison Formation. It lived on ancient floodplains and riverbanks.1

迷思破解王

迷思： Many small dinosaur fossils from the Morrison Formation were thought to be different species like Nanosaurus, Laosaurus and Drinker.

真相： Scientists now think those fossils are not distinct enough to name, and only Enigmacursor is a valid species.1

給恐龍專家

學名: Enigmacursor
命名者: Maidment and Barrett 20254
類群: 有喙的草食恐龍
科 / 演化支: Neornithischia4
分類: Ornithischia4
岩石的年代: 155 到 143 百萬年 (Kimmeridgian / Tithonian)4
岩層: Morrison4
國家: 美國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Enigmacursor was named by Susannah Maidment and Paul Barrett in 2025. The species name mollyborthwickae honors Molly Lowell Borthwick, who helped fund the purchase of the only known specimen.1 2
仍有爭議: Scientists are still unsure about the full appearance of Enigmacursor because the skull and some other bones have not been found.1