恐龍卡第 0095 張，共 2 027 張

Amphicoelias

名字的意思： “biconcave, meaning hollow on both sides”1

吃：植物長脖子恐龍侏羅紀晚期到白堊紀早期

Amphicoelias was a giant, long-necked plant-eater that lived about 150 million years ago. It had very long and thin hind legs, and its front legs were longer than those of its close relative Diplodocus. This dinosaur was about as long as three school buses parked end to end!1

生存年代

158 到 143 百萬年前3

侏羅紀晚期到白堊紀早期

化石發現地

Colorado, USA, and possibly Zimbabwe1 2

長度

18 m (59 ft)1

體重

15 公噸 (33,100 lb)1

高度

4.1 m (13 ft)

估計值

最高速度

時速約 13 公里（8 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

牠有多重？

跟 2.5 頭大象一樣重

跟 4 台汽車排成一排一樣長跟 100 根香蕉頭尾相接一樣長跟 10 台汽車一樣重跟 3000 顆西瓜一樣重跟 19 整班小學生一樣重跟 33 隻北極熊一樣重能在 28 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Amphicoelias 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)

Amphicoelias 時速約 13 公里 (8 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

Amphicoelias was named by the famous paleontologist Edward Drinker Cope in 1877.1

Its name means 'biconcave' because the bones of its spine were hollow on both sides.1

Amphicoelias lived in a savanna-like environment with ferns and some tall trees along rivers.1

One species once called Amphicoelias fragillimus was later renamed Maraapunisaurus in 2018.1 2

The first fossils of Amphicoelias were found by a man named Aaron Ripley in Colorado in 1877.1

Amphicoelias was lighter and more slender than many other sauropods of its time.1

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

?How big was Amphicoelias?

Amphicoelias was about 18 metres (59 feet) long and weighed about 15 metric tons (17 short tons). That is longer than its close relative Diplodocus.1

?What did Amphicoelias eat?

Amphicoelias was a plant-eater that ate ferns and other plants. It lived in a savanna-like environment with some tall trees along rivers.1

?When did Amphicoelias live?

Amphicoelias lived about 150 million years ago during the Late Jurassic Period.1

?Was Amphicoelias a dinosaur?

Yes, Amphicoelias was a dinosaur. It was a sauropod, a type of long-necked, plant-eating dinosaur.1

?Where was Amphicoelias found?

Amphicoelias fossils were found in Colorado, United States, in rocks called the Morrison Formation.1

?Is Amphicoelias the biggest dinosaur?

No, Amphicoelias was not the biggest dinosaur. It was about 18 metres long, which is shorter than its relative Diplodocus. One giant species once called Amphicoelias fragillimus was later renamed Maraapunisaurus.1

迷思破解王

迷思： Some people think Amphicoelias fragillimus was the largest dinosaur ever, over 60 meters long.

真相： That species is now considered a different dinosaur called Maraapunisaurus, and its size is uncertain because the only fossil was lost.1 2

給恐龍專家

學名: Amphicoelias
命名者: Cope 18773
類群: 長脖子恐龍
科 / 演化支: Diplodocoidea3
分類: Sauropodomorpha > Sauropoda > Diplodocoidea3
岩石的年代: 158 到 143 百萬年 ()3
岩層: Morrison, Kadzi3
國家: 美國, 辛巴威3
化石紀錄: The Paleobiology Database 收錄 3 筆3
發現: Edward Drinker Cope named Amphicoelias in 1877 based on fossils found by Aaron Ripley in Colorado, USA.1
仍有爭議: Scientists are not sure if some bones, like a tooth and shoulder blade, really belong to Amphicoelias or to another dinosaur.1