恐龍卡第 0136 張，共 2 027 張

Apatosaurus

名字的意思： “deceptive lizard”1

吃：植物長脖子恐龍侏羅紀晚期到白堊紀早期

Apatosaurus was a giant, long-necked plant eater that lived about 150 million years ago. It was one of the biggest land animals ever, with a huge body and a very long tail.2 1

生存年代

158 到 143 百萬年前6

侏羅紀晚期到白堊紀早期

化石發現地

USA, in the Morrison Formation spanning states like Wyoming, Colorado, and Montana1 6

長度

21 到 23 m (69 到 75 ft)1 2

體重

最多 41 公噸 (90,400 lb)2

高度

3 到 4.6 m (9.8 到 15 ft)3

最高速度

時速約 20 公里（12 英里）

跑步: Fastovsky & Weishampel 2009 (20 to 30 km/h)

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 7 頭大象一樣重

跟 5 台汽車排成一排一樣長跟 130 根香蕉頭尾相接一樣長跟 8200 顆西瓜一樣重跟 51 整班小學生一樣重跟 91 隻北極熊一樣重高到能從 2 樓的窗戶往裡看能在 18 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Apatosaurus 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)

Apatosaurus 時速約 20 公里 (12 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

Apatosaurus had a long, whiplike tail that might have been used like a whip.1

Young Apatosaurus grew very fast, reaching full adult size in about 10 years.1

Its huge size helped protect it from smaller predators, and living in herds gave extra safety.1

Apatosaurus lived alongside other famous dinosaurs like Stegosaurus, Diplodocus, and Allosaurus.1

The environment where Apatosaurus lived was semi-arid, with forests, rivers, and floodplains, and had distinct wet and dry seasons.1

Apatosaurus weighed as much as five adult elephants.2

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

?How big was Apatosaurus?

About 21 to 23 metres (69 to 75 feet) long and weighed 16 to 22 tonnes (18 to 24 short tons). Some specimens may have been even larger, up to 30 metres (98 feet) long and 33 tonnes (36 short tons).1 2 4

?What did Apatosaurus eat?

It ate plants like ferns, conifers, and other leaves. It swallowed them whole and used stones in its stomach to help digest the tough plant material.1 5

?When did Apatosaurus live?

It lived about 152 to 145 million years ago, during the Late Jurassic Period.1 4

?Where was Apatosaurus found?

Fossils have been found in the United States, in states like Colorado, Wyoming, Utah, Oklahoma, and New Mexico.1 4

?Is Apatosaurus the same as Brontosaurus?

For many years scientists thought they were the same, but a 2015 study says they are separate, closely related dinosaurs. Not all experts agree, though.1 2 4

?How fast could Apatosaurus grow?

Young Apatosaurus grew very quickly and reached full adult size in about 10 years.1

?Could Apatosaurus use its tail as a weapon?

Yes, it had a long, whiplike tail that it might have used like a whip to defend itself or make loud noises.1 4

?Was Apatosaurus bigger than T. rex?

Yes, Apatosaurus was much bigger. It was about 21 to 23 metres long and weighed up to 22 tonnes, while T. rex was about 12 metres long and weighed around 8 tonnes.1 2

?Did Apatosaurus live with Allosaurus?

Yes, they lived alongside each other in the Late Jurassic. Allosaurus was a predator that may have attacked Apatosaurus, but Apatosaurus's huge size helped protect it.1 5

?How did Apatosaurus get its name?

Its name means 'deceptive lizard' in Greek. The scientist who named it, Othniel Charles Marsh, thought some of its bones were confusing and looked like those of a marine reptile.1 5

迷思破解王

迷思： Brontosaurus is the same dinosaur as Apatosaurus.

真相： For over 100 years, scientists thought Brontosaurus and Apatosaurus were the same. But a 2015 study suggests they are separate, closely related dinosaurs.1 2

給恐龍專家

學名: Apatosaurus
命名者: Marsh 18776
類群: 長脖子恐龍
科 / 演化支: Diplodocidae6
分類: Sauropodomorpha > Sauropoda > Diplodocoidea6
岩石的年代: 158 到 143 百萬年 ()6
岩層: Morrison6
國家: 美國6
化石紀錄: The Paleobiology Database 收錄 67 筆6
發現: Apatosaurus was named by Othniel Charles Marsh in 1877. He chose the name because some of the fossil bones were confusing and seemed to resemble those of a sea reptile.1 6
仍有爭議: Scientists still debate whether Apatosaurus and Brontosaurus are separate genera or the same.2 1