恐龍卡第 1175 張，共 2 027 張

Mexidracon

名字的意思： “Mexican dragon”1

Mexidracon was a fast, ostrich-like dinosaur that lived in what is now Mexico. It had very long hands with fingers that were longer than its feet, which is weird for a dinosaur! Scientists think it could run quickly on its strong legs.2 3

生存年代

84 到 72 百萬年前6

白堊紀晚期

化石發現地

Coahuila, Mexico (Cerro del Pueblo Formation)1 2

長度

3 m (9.8 ft)4

體重

80 kg (176 lb)4

高度

1.2 m (3.9 ft)4

最高速度

時速約 66 公里（41 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？

牠有多重？

跟 4 隻狗一樣重

跟 3 隻狗從鼻子接到尾巴一樣長跟 17 根香蕉頭尾相接一樣長跟 16 顆西瓜一樣重跟 4 個幼兒園小朋友一樣重跟 2.5 個小學生一樣重能在 5.5 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Mexidracon 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)

一匹飛奔的馬 時速約 65 公里 (40 mph)

Mexidracon 時速約 66 公里 (41 mph)

一隻獵豹 時速約 100 公里 (62 mph)

酷東西

趣味知識

Mexidracon's hand bones (metacarpals) were longer than its foot bones, an extreme feature not seen in most dinosaurs.2 3

It belonged to a group called ornithomimids, which are often called 'ostrich dinosaurs' because they looked a bit like ostriches.2

Mexidracon lived during the Campanian age, about 83 to 72 million years ago.1

Its fossils were found in the Cerro del Pueblo Formation in Mexico, a place that also had other dinosaurs like deinocheirids.2 3

The only known specimen includes bones from the spine, arms, hips, and legs, but not the skull.2

Mexidracon had a special foot structure called arctometatarsalian, where one foot bone was pinched between the others, helping it run.2 3

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

?What did Mexidracon eat?

Scientists think Mexidracon ate plants. Its long hands may have helped it gather vegetation, like other plant eating ornithomimosaurs with long arms.5

?How big was Mexidracon?

Scientists don't know its exact size yet, because only a partial skeleton has been found. It was probably medium-sized, like other ornithomimids.5

?When did Mexidracon live?

Mexidracon lived about 72.5 million years ago, during the Campanian age of the Late Cretaceous period.5

?Where was Mexidracon found?

Mexidracon was found in the Cerro del Pueblo Formation in Coahuila, Mexico. Its fossils were discovered near the town of Porvenir de Jalpa.5

給恐龍專家

學名: Mexidracon
命名者: Serrano-Brañas et al. 20256
類群: 似鳥龍類
科 / 演化支: Ornithomimidae6
分類: Theropoda > Ornithomimosauria6
岩石的年代: 84 到 72 百萬年 (Campanian)6
岩層: Cerro del Pueblo6
國家: 墨西哥6
化石紀錄: The Paleobiology Database 收錄 1 筆6
發現: Mexidracon was named in 2025 by Claudia Serrano-Brañas and her team. The fossils were found in the Cerro del Pueblo Formation in Coahuila, Mexico.1 2
仍有爭議: Scientists are not sure exactly how Mexidracon used its extremely long hands. It might have been for grabbing food, digging, or something else.2