恐龍卡第 1906 張，共 2 027 張

Walkeria

名字的意思： “for Alick Walker”1

最早的恐龍三疊紀晚期

Walkeria was an early reptile that lived in India during the Late Triassic, about 228 million years ago. It was a small, two-legged animal that scientists once thought was a dinosaur, but now they are not so sure.1

生存年代

237 到 227 百萬年前5

三疊紀晚期

長度

1.5 m (4.9 ft)3

體重

1.8 kg 到 2.3 kg (4 到 5 lb)4

高度

0.4 m (1.3 ft)4

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？

牠有多重？

跟 19 根香蕉一樣重

跟 3 隻家貓從鼻子接到尾巴一樣長跟 8 根香蕉頭尾相接一樣長大約跟一隻家貓一樣重跟 19 根香蕉一樣重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）

Walkeria 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)

Walkeria 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

Walkeria was first named in 1987 by paleontologist Sankar Chatterjee, but the name was already used for a tiny sea animal, so it was changed to Alwalkeria in 1994.1

The fossils of Walkeria are a mix of bones from different animals, like a puzzle. The skull might belong to a crocodile-like reptile, while the leg bones could be from a dinosaur.1

Walkeria lived in a place that was once an ancient lake or river in what is now India.1

Some scientists think the thigh bone of Walkeria looks like that of a lagerpetid, a group of small, agile reptiles that were close relatives of pterosaurs.1

Because its fossils are so mixed up, scientists are not sure if Walkeria was a dinosaur, a crocodile relative, or something else entirely.1

Walkeria 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Walkeria 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。

給恐龍專家

學名: Walkeria
命名者: Chatterjee 19875
類群: 最早的恐龍
科 / 演化支: Saurischia5
岩石的年代: 237 到 227 百萬年 (Carnian)5
化石紀錄: The Paleobiology Database 收錄 1 筆5
發現: Sankar Chatterjee named Walkeria in 1987 based on a partial skull, vertebrae, and leg bones found in the Maleri Formation of India. The name was later changed to Alwalkeria because 'Walkeria' was already taken.1
仍有爭議: Scientists still debate whether Walkeria was a dinosaur, a crocodile-like reptile, or a lagerpetid, because its fossils are a mix of different animals.1