恐龍卡第 1029 張，共 2 027 張

Leonerasaurus

名字的意思： “Leoneras lizard, named after the Las Leoneras Formation where it was found”1

吃：植物長脖子恐龍侏羅紀早期

Leonerasaurus was a small, plant-eating dinosaur that lived in what is now Argentina. It had a long neck and walked on four legs, but it was much smaller than its giant sauropod cousins. This dinosaur helps scientists understand how the biggest dinosaurs evolved.2 1

生存年代

193 到 184 百萬年前4

侏羅紀早期

化石發現地

Cañadón Las Leoneras, Chubut Province, central Patagonia, Argentina1 3

長度

2.4 m (7.9 ft)2

體重

70 kg (154 lb)2

高度

1 m (3.3 ft)2

最高速度

時速約 40 公里（25 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 5 隻家貓從鼻子接到尾巴一樣長跟 13 根香蕉頭尾相接一樣長跟 14 顆西瓜一樣重跟 4 個幼兒園小朋友一樣重跟 2 個小學生一樣重能在 9 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Leonerasaurus 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)

Leonerasaurus 時速約 40 公里 (25 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

Leonerasaurus had four vertebrae in its sacrum (the part of the spine that connects to the hips), just like giant sauropods, even though it was much smaller.1

Its teeth were spoon-shaped and had no serrations, which is a feature seen in early sauropods.1

The fossil was found with many bones still connected, including the neck, back, hips, and shoulder bones.1

Leonerasaurus lived during the Early Jurassic period, about 199 to 184 million years ago.2 4

It was a close relative of sauropods, but it was not a true sauropod itself.1

The only known specimen is a subadult, meaning it was not fully grown when it died.2

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

?How big was Leonerasaurus?

About 2.4 metres long, 1 metre tall at the hip, and weighed around 70 kilograms.2

?What did Leonerasaurus eat?

It was a plant-eater. Its spoon-shaped teeth were good for eating soft plants.2 1

?When did Leonerasaurus live?

It lived during the Early Jurassic period, probably between 199 and 184 million years ago.2

?Is Leonerasaurus a dinosaur?

Yes, it is a dinosaur. It is a basal sauropodomorph, a close relative of the giant sauropods.2 1

給恐龍專家

學名: Leonerasaurus
命名者: Pol et al. 20114
類群: 長脖子恐龍
科 / 演化支: Sauropodiformes4
分類: Sauropodomorpha4
岩石的年代: 193 到 184 百萬年 (Pliensbachian)4
岩層: Las Leoneras4
國家: 阿根廷4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Leonerasaurus was named in 2011 by Diego Pol, Alberto Garrido, and Ignacio A. Cerda. The fossil was found in the Las Leoneras Formation in central Patagonia, Argentina.1 2
仍有爭議: Scientists are not sure exactly how old the rocks that held Leonerasaurus are. They think it lived in the Early Jurassic, but the exact age is debated.1 3