恐龍卡第 0332 張，共 2 027 張

Camarasaurus

名字的意思： “chambered lizard”1

吃：植物長脖子恐龍侏羅紀晚期到白堊紀早期

Camarasaurus was a giant, long-necked plant-eater that lived in North America during the Late Jurassic. It had a bulky body, a wide ribcage, and a surprisingly large skull for a sauropod. More than 530 fossils have been found, making it the most common dinosaur in the Morrison Formation.1

生存年代

162 到 143 百萬年前2

侏羅紀晚期到白堊紀早期

化石發現地

Colorado, Montana, New Mexico, Oklahoma, South Dakota, Texas, Utah, and Wyoming, USA; also possibly Zimbabwe and Germany1 2

長度

18 到 23 m (59 到 75 ft)1

體重

20 公噸到 50 公噸 (44,100 到 110,200 lb)1

高度

4 到 5 m (13 到 16 ft)1

最高速度

時速約 10 公里（6 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 8 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 10000 顆西瓜一樣重跟 62 整班小學生一樣重跟 110 隻北極熊一樣重高到能從 2 樓的窗戶往裡看能在 36 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Camarasaurus 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)

Camarasaurus 時速約 10 公里 (6 mph)

騎腳踏車的小朋友 時速約 12 公里 (7 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

Camarasaurus means 'chambered lizard' because its backbone had hollow chambers, which helped lighten its skeleton.1

It had a relatively short neck and tail compared to other sauropods, and its front legs were longer than its back legs, making its shoulders higher than its hips.1

More than 530 specimens have been found, including several nearly complete skeletons, so scientists know a lot about this dinosaur.1

Camarasaurus lived alongside other famous dinosaurs like Diplodocus, Stegosaurus, and Allosaurus in the Morrison Formation.1

Its teeth had microscopic pits and scratches that show adults ate tough, coarse plants, while juveniles ate softer food.1

A nearly complete skeleton of a young Camarasaurus (CM 11338) was found with its neck curved upward, but that pose may have happened after death, not when it was alive.1

Camarasaurus 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Camarasaurus 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。

迷思破解王

迷思： Camarasaurus could hold its neck straight up like a giraffe.

真相： Scientists think its neck was held more horizontally or with a slight downward slope, not vertical like a swan.1

給恐龍專家

學名: Camarasaurus
命名者: Cope 18772
類群: 長脖子恐龍
科 / 演化支: Camarasauridae2
分類: Sauropodomorpha > Sauropoda > Macronaria2
岩石的年代: 162 到 143 百萬年 (Oxfordian / Tithonian)2
岩層: Morrison, Kadzi, Süntel2
國家: 美國, 辛巴威, 德國2
化石紀錄: The Paleobiology Database 收錄 138 筆2
又名: Cathetosaurus, Caulodon, Uintasaurus （舊名稱現在也算作同一種動物）2
發現: Camarasaurus was named in 1877 by Edward Drinker Cope, based on fossils from Garden Park, Colorado. Soon after, his rival Othniel Charles Marsh named similar fossils Morosaurus, but those are now considered the same genus.1
仍有爭議: Scientists still debate exactly how Camarasaurus held its neck and whether it could rear up on its hind legs to reach high plants.1