恐龍卡第 1043 張，共 2 027 張

Leyesaurus

名字的意思： “Leyes' lizard, named after the Leyes family who owned the land where it was found”1

吃：植物長脖子恐龍侏羅紀早期

Leyesaurus was a long-necked dinosaur that lived in what is now Argentina. It walked on two legs and used its long neck to reach leaves high up in trees.1

生存年代

201 到 175 百萬年前5

侏羅紀早期

化石發現地

Quebrada del Barro Formation, northwestern Argentina1

長度

2.5 m (8.2 ft)3 4

高度

0.78 m (2.6 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 2.5 隻狗從鼻子接到尾巴一樣長跟 14 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）

Leyesaurus 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)

Leyesaurus 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

Leyesaurus had an extremely long neck for its time. Its sixth neck bone was more than five times longer than it was tall, which is unique among early sauropodomorphs.1

This dinosaur is a member of the Massospondylidae family, which were plant-eating dinosaurs that spread across many continents.1

Leyesaurus lived during the Early Jurassic Period, about 201 to 174 million years ago.2

The only known skeleton of Leyesaurus is partially articulated, meaning many bones were still connected when found.1

Leyesaurus had a sharply angled snout, with its upper jaw bone rising at a 50-degree angle.1

Leyesaurus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Leyesaurus 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: Leyesaurus
命名者: Apaldetti et al. 20115
類群: 長脖子恐龍
科 / 演化支: Massospondylidae5
分類: Sauropodomorpha5
岩石的年代: 201 到 175 百萬年 (Hettangian / Toarcian)5
國家: 阿根廷5
化石紀錄: The Paleobiology Database 收錄 1 筆5
發現: Leyesaurus was named in 2011 by Cecilia Apaldetti and colleagues. The fossils were found in the Quebrada del Barro Formation in San Juan Province, Argentina.1
仍有爭議: Scientists are not sure exactly how big Leyesaurus grew, because only a partial skeleton has been found.1