恐龍卡第 0798 張，共 2 027 張

Herrerasaurus

名字的意思： “Herrerasaurus means 'Herrera's lizard', named after a rancher named Herrera.”5

吃：肉最早的恐龍三疊紀晚期

Herrerasaurus was one of the very first dinosaurs. It was a fast, two-legged hunter with sharp claws and teeth. It lived in Argentina about 230 million years ago.1 5

生存年代

237 到 227 百萬年前5

三疊紀晚期

化石發現地

Fossils were found in the Ischigualasto Formation in Argentina, in the provinces of San Juan and La Rioja.5 2

長度

3 到 6 m (9.8 到 20 ft)5

體重

30 kg 到 300 kg (66 到 661 lb)5

高度

1.1 m (3.6 ft)3

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？

牠有多重？

跟 15 隻狗一樣重

跟 6 隻狗從鼻子接到尾巴一樣長跟 33 根香蕉頭尾相接一樣長跟 60 顆西瓜一樣重跟 16 個幼兒園小朋友一樣重跟 9 個小學生一樣重能在 7.1 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Herrerasaurus 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)

Herrerasaurus 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

Herrerasaurus had a short forelimb that was specialized for grasping and raking, making it a skilled predator.1

It lived during the Carnian age, about 237 to 227 million years ago, which is very early in dinosaur history.5

Some scientists used to think Herrerasaurus was not a true dinosaur, but now most agree it was an early theropod.2

Herrerasaurus is the type genus of the family Herrerasauridae, a group of early meat-eating dinosaurs.2

The first fossils were found in 1963, but a complete skull and skeleton were not unearthed until 1992.1 5

Herrerasaurus was an agile, bipedal predator, meaning it walked on two legs and was quick on its feet.1

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

?How big was Herrerasaurus?

Herrerasaurus was about 6 metres (20 feet) long and weighed around 350 kilograms (770 pounds). Smaller specimens were about 4.5 metres (15 feet) long and weighed about 200 kilograms (440 pounds).4

?What did Herrerasaurus eat?

Herrerasaurus was a carnivore, meaning it ate meat. It had large serrated teeth for biting and eating flesh, and sharp claws for grasping prey.4

?When did Herrerasaurus live?

Herrerasaurus lived during the Late Triassic period, about 231 to 228 million years ago, during the Carnian age. That's very early in dinosaur history.4

?Where was Herrerasaurus found?

Herrerasaurus fossils have been found in the Ischigualasto Formation in northwestern Argentina, South America. The first specimen was discovered in 1958 by a rancher named Victorino Herrera.4

?Was Herrerasaurus a dinosaur?

Yes, Herrerasaurus is considered an early dinosaur. For many years scientists debated whether it was a true dinosaur, but now most agree it was an early saurischian dinosaur, possibly a primitive theropod.4

?How fast could Herrerasaurus run?

Herrerasaurus was likely a swift runner. It had strong hind limbs with short thighs and long feet, and a stiff tail for balance, all adaptations for speed.4

?Did Herrerasaurus have feathers?

The sources do not mention feathers on Herrerasaurus. It lived very early in dinosaur history, and no feather fossils have been found with it.4

?Why is Herrerasaurus important?

Herrerasaurus is important because it is one of the earliest known dinosaurs. Its fossils help scientists understand the early evolution of dinosaurs and what the common ancestor of all dinosaurs might have looked like.4 1

迷思破解王

迷思： Some people think Herrerasaurus was a dinosaur like T. rex, but it was much older and more primitive.

真相： Herrerasaurus was an early dinosaur, but it lived about 230 million years ago, long before T. rex. It had a shorter forelimb and a more primitive body.1

給恐龍專家

學名: Herrerasaurus
命名者: Reig 19635
類群: 最早的恐龍
科 / 演化支: Herrerasauridae5
分類: Herrerasauridae5
岩石的年代: 237 到 227 百萬年 (Carnian)5
岩層: Ischigualasto5
國家: 阿根廷5
化石紀錄: The Paleobiology Database 收錄 11 筆5
又名: Frenguellisaurus, Ischisaurus （舊名稱現在也算作同一種動物）5
發現: Herrerasaurus was named by Osvaldo Reig in 1963, based on fossils found in Argentina. Later, a complete skull and skeleton were discovered in the Ischigualasto Formation, helping scientists understand its anatomy.5 1
仍有爭議: Scientists still debate whether Herrerasaurus was a true theropod or a more primitive dinosaur, because it has features of both.2