恐龍卡第 0195 張，共 2 027 張

Aucasaurus

名字的意思： “Auca lizard”1

吃：肉肉食恐龍白堊紀晚期

Aucasaurus was a medium-sized meat-eating dinosaur that lived in what is now Argentina. It had tiny arms with almost no fingers, and its skull had low ridges above the eyes instead of horns.2 1

生存年代

84 到 72 百萬年前4

白堊紀晚期

化石發現地

Argentina (Anacleto Formation, Neuquén Basin)2 4

長度

5 到 6.2 m (16 到 20 ft)2 1

體重

700 kg (1,500 lb)2

高度

1.8 m (5.9 ft)3

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？

牠有多重？

跟 35 隻狗一樣重

跟 6 隻狗從鼻子接到尾巴一樣長跟 34 根香蕉頭尾相接一樣長跟 140 顆西瓜一樣重跟 37 個幼兒園小朋友一樣重跟 22 個小學生一樣重能在 9.2 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Aucasaurus 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)

Aucasaurus 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

Aucasaurus had four bones in its hand, but only two fingers with no claws.2

Its tail bones suggest it had strong tail muscles and could run fast.2

The skull of the only known skeleton is damaged, which might mean it got into a fight before it died.2

Two of its tail vertebrae were fused together from birth, a condition called block vertebrae. This is the earliest known example of this birth defect in a meat-eating dinosaur.2

Aucasaurus was smaller than its relative Carnotaurus, but its arms were even more reduced.2

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

?How big was Aucasaurus?

Aucasaurus was about 5.5 to 6.2 metres long and weighed around 700 kilograms. The Natural History Museum gives a length of 5.0 metres.2 1

?What did Aucasaurus eat?

Aucasaurus was a carnivore, meaning it ate meat. It likely hunted other animals or scavenged.1

?When did Aucasaurus live?

Aucasaurus lived during the Late Cretaceous period, about 84 to 71 million years ago.1

?Where was Aucasaurus found?

Aucasaurus was found in Argentina, in the Anacleto Formation of the Neuquén Basin.2 1

?Was Aucasaurus bigger than Carnotaurus?

No, Aucasaurus was smaller than Carnotaurus. It was about 5.5 to 6.2 metres long, while Carnotaurus was larger.2

?Did Aucasaurus have feathers?

The sources do not mention feathers on Aucasaurus. It is not known if it had feathers.2

給恐龍專家

學名: Aucasaurus
命名者: Coria et al. 20024
類群: 肉食恐龍
科 / 演化支: Abelisauridae4
分類: Theropoda > Ceratosauria > Abelisauridae4
岩石的年代: 84 到 72 百萬年 (Campanian)4
岩層: Anacleto4
國家: 阿根廷4
化石紀錄: The Paleobiology Database 收錄 2 筆4
發現: Aucasaurus was named by Rodolfo Coria, Luis Chiappe and Lowell Dingus in 2002. The skeleton was found in Argentina.2 1
仍有爭議: Some scientists think Aucasaurus might be the same species as Abelisaurus, but others disagree.2