恐龍卡第 0901 張，共 2 027 張

Janenschia

名字的意思： “named after Werner Janensch, a German paleontologist who studied fossils from Tanzania”1

吃：植物長脖子恐龍侏羅紀晚期到白堊紀早期

Janenschia was a huge, long-necked plant-eater that lived in what is now Tanzania, Africa, about 150 million years ago. It was one of the biggest animals on land during the Late Jurassic period.1

生存年代

149 到 143 百萬年前5

侏羅紀晚期到白堊紀早期

化石發現地

Tendaguru Formation, Lindi Region, Tanzania1

長度

15 到 20 m (49 到 66 ft)1

體重

10 公噸到 20 公噸 (22,000 到 44,100 lb)1

高度

4.5 m (15 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 3 頭大象一樣重

跟 4 台汽車排成一排一樣長跟 110 根香蕉頭尾相接一樣長跟 13 台汽車一樣重跟 4000 顆西瓜一樣重跟 25 整班小學生一樣重跟 44 隻北極熊一樣重高到能從 2 樓的窗戶往裡看能在 28 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Janenschia 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)

Janenschia 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

Janenschia was first thought to be a different dinosaur called Gigantosaurus, but later scientists gave it its own name in 1991.1

Its fossils were discovered at a famous fossil site called Tendaguru Hill in Tanzania, where many other giant dinosaurs were also found.1

Janenschia is one of the oldest known members of a group called Titanosauria, which includes some of the heaviest dinosaurs ever.1

Some bones that were once thought to belong to Janenschia were later identified as a new dinosaur called Wamweracaudia.1 2

Janenschia walked on four thick, pillar-like legs and had a very long tail to balance its long neck.1

Scientists now think Janenschia was not a true titanosaur, but a close relative that lived earlier in the Jurassic.2

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

?How big was Janenschia?

About 20 metres (66 feet) long, according to the Natural History Museum. Other estimates say up to 24 metres (79 feet) long and weighing about 30,000 kg (33 tons).3 4

?What did Janenschia eat?

It was an herbivore, meaning it ate only plants. It swallowed leaves whole and may have used gastroliths (stomach stones) to help digest the tough plant material.4

?When did Janenschia live?

Janenschia lived during the Late Jurassic Period, about 155 to 145 million years ago.1

?Where was Janenschia found?

Its fossils were discovered in the Tendaguru Formation of Lindi Region, Tanzania, Africa.1

給恐龍專家

學名: Janenschia
命名者: Wild 19915
類群: 長脖子恐龍
科 / 演化支: Eusauropoda5
分類: Sauropodomorpha > Sauropoda5
岩石的年代: 149 到 143 百萬年 (Tithonian)5
岩層: Tendaguru5
國家: 坦尚尼亞5
化石紀錄: The Paleobiology Database 收錄 2 筆5
發現: The first fossils of Janenschia were found in 1907 by Eberhard Fraas at a site near Tendaguru Hill in Tanzania. It was named Janenschia in 1991 by Rupert Wild to honor paleontologist Werner Janensch.1
仍有爭議: Scientists are still debating whether Janenschia belongs to the titanosaur group or is a more primitive sauropod.2