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Ahvaytum 的卡通圖
恐龍卡第 0047 張，共 2 027 張

Ahvaytum

名字的意思： “long ago”1
吃：植物長脖子恐龍三疊紀晚期

Ahvaytum was a tiny, early long-necked dinosaur that lived about 230 million years ago in what is now Wyoming. It is the oldest known dinosaur from the northern half of the ancient supercontinent Pangaea. Ahvaytum was only about as long as a big dog and as tall as a ruler!123

生存年代
237 到 227 百萬年前6
三疊紀晚期
化石發現地
Wyoming, USA21
長度
0.91 m (3 ft)1
體重
10 kg (22 lb)4
高度
0.3 m (1 ft)1
最高速度
時速約 30 公里（19 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？

Ahvaytum 約 0.91 公尺長 (3 ft)一隻家貓 約 0.5 公尺 (1.6 ft)一隻狗 約 1 公尺 (3.3 ft)大人的腳踏車 約 1.8 公尺 (5.9 ft)

牠有多高？

Ahvaytum約 0.3 公尺高 (1 ft)一隻家貓約 0.3 公尺 (1 ft)一隻狗約 0.5 公尺 (1.6 ft)一匹馬約 1.6 公尺 (5.2 ft)

牠有多重？

跟 2.5 隻家貓一樣重
跟 2 隻家貓從鼻子接到尾巴一樣長跟 5 根香蕉頭尾相接一樣長跟 83 根香蕉一樣重小到能從椅子底下走過去能在 12 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Ahvaytum 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？

酷東西

趣味知識

1

Ahvaytum's name comes from the Shoshone language, meaning 'long ago'. The species name means 'water's young man' and is also the Shoshone word for dinosaur.1

2

Scientists found only a few leg bones of Ahvaytum: an ankle bone and a piece of a thigh bone. These small fossils tell us it was a fast-growing, active dinosaur.1

3

Ahvaytum lived during the Carnian age, about 230 million years ago, which is the same time as the very first dinosaurs in the southern hemisphere.23

4

The fossils of Ahvaytum were discovered in 2013 in the Popo Agie Formation of Wyoming, a river environment from the Triassic period.1

5

Ahvaytum was a sauropodomorph, meaning it belonged to the group of long-necked dinosaurs that later included giants like Brachiosaurus. But Ahvaytum was much smaller.1

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

?How big was Ahvaytum?

About 0.91 metres (3 feet) long and 0.30 metres (1 foot) tall. That is about the size of a chicken with a long tail.15

?Is Ahvaytum the oldest dinosaur?

No, but it is the oldest known named dinosaur from the northern half of the ancient supercontinent Pangaea, called Laurasia. It lived about 230 million years ago.15

?Where was Ahvaytum found?

In the Popo Agie Formation of Wyoming, United States. The fossils were discovered in 2013.1

給恐龍專家

學名
Ahvaytum
命名者
Lovelace et al. 20256
類群
長脖子恐龍
科 / 演化支
Sauropodomorpha6
分類
Sauropodomorpha6
岩石的年代
237 到 227 百萬年 (Carnian)6
岩層
Popo Agie6
國家
美國6
化石紀錄
The Paleobiology Database 收錄 1 筆6
發現
Ahvaytum was named in 2025 by David M. Lovelace and colleagues, based on fossils found in Wyoming, USA. The name was created with help from Eastern Shoshone elders and students.1
仍有爭議
Scientists are not sure whether Ahvaytum is definitely a sauropodomorph, because the bones are so few. Some think it might belong to another dinosaur group.13

知識從哪裡來

  1. Ahvaytum (en.wikipedia.org)
  2. PBDB Taxon (paleobiodb.org)
  3. Rethinking dinosaur origins: oldest known equatorial dinosaur-bearing assemblage (mid-late Carnian Popo Agie FM, Wyoming, USA) (dinodata.de)
  4. Ahvaytum bahndooiveche | Dinosaur Database by DinoAnimals.com (dinoanimals.com)
  5. Dinosaurs roamed the northern hemisphere millions of years earlier than previously thought, according to new analysis of the oldest North American fossils – UW–Madison News (news.wisc.edu)
  6. Ahvaytum in The Paleobiology Database (CC BY 4.0): 年代、地點、岩層、分類。

這一頁的每個知識都有一個編號，指向它的出處。如果我們有哪裡寫錯了，很抱歉，我們是恐龍迷，不是科學期刊。寫信到 [email protected] 告訴我們，我們會修正。

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同一類群的更多動物: 長脖子恐龍

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同一時代的還有: 三疊紀晚期

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