恐龍卡第 1576 張，共 2 027 張

Sanjuansaurus

名字的意思： “San Juan Province lizard”1

吃：肉最早的恐龍三疊紀晚期

Sanjuansaurus was an early meat-eating dinosaur that lived about 231 million years ago in what is now Argentina. It was a fast hunter with sharp claws and teeth, and it was one of the first dinosaurs to appear on Earth.2 1

生存年代

237 到 227 百萬年前4

三疊紀晚期

化石發現地

Ischigualasto Provincial Park, San Juan Province, Argentina2 4

長度

2.5 到 3.5 m (8.2 到 11 ft)2

高度

0.93 m (3.1 ft)

估計值

最高速度

時速約 51 公里（32 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 4 隻狗從鼻子接到尾巴一樣長跟 19 根香蕉頭尾相接一樣長能在 7.1 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Sanjuansaurus 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)

Sanjuansaurus 時速約 51 公里 (32 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

Sanjuansaurus had a short pubis bone that was only 63% of the length of its thigh bone, which is a unique feature among its relatives.2

It lived in a warm, wet floodplain with forests of ferns and giant conifers, alongside other early dinosaurs like Herrerasaurus and Eoraptor.1

The only known fossil of Sanjuansaurus was found in an area of just one square meter, suggesting all the bones came from a single animal.2

Sanjuansaurus was about the same size as a medium-sized Herrerasaurus, and slightly larger than Staurikosaurus.2

The name Sanjuansaurus honors San Juan Province in Argentina, where the fossil was discovered.1

Scientists think Sanjuansaurus was a fast runner because its leg bones were long and slender, built for speed.2

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

?How big was Sanjuansaurus?

About 3 metres (10 feet) long. It was about the size of a medium Herrerasaurus, with a thigh bone 395 mm (15.6 in) long.3 1

?What did Sanjuansaurus eat?

It was a carnivore, meaning it ate meat. It had sharp claws and teeth to hunt other animals.3 1

?When did Sanjuansaurus live?

It lived about 231 million years ago during the Late Triassic Period, in what is now Argentina.1 2

?Was Sanjuansaurus a dinosaur?

Yes, it was an early meat-eating dinosaur called a herrerasaurid. It is one of the first dinosaurs to appear on Earth.1 2

給恐龍專家

學名: Sanjuansaurus
命名者: Alcober and Martínez 20104
類群: 最早的恐龍
科 / 演化支: Herrerasauridae4
分類: Herrerasauridae4
岩石的年代: 237 到 227 百萬年 (Carnian)4
岩層: Ischigualasto4
國家: 阿根廷4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Sanjuansaurus was named in 2010 by paleontologists Oscar Alcober and Ricardo Martínez, based on a partial skeleton found in 1994 in the Ischigualasto Formation of Argentina.2 4
仍有爭議: Scientists are still debating whether herrerasaurids like Sanjuansaurus were early theropods or a separate group of dinosaurs that lived before theropods evolved.2