恐龍卡第 0505 張，共 2 027 張

Demandasaurus

名字的意思： “Demanda lizard, named after the Sierra de la Demanda mountain range in Spain”1

吃：植物長脖子恐龍白堊紀早期

Demandasaurus was a medium-sized, long-necked dinosaur that lived in what is now Spain about 125 million years ago. It was a plant-eater with a special set of teeth that had ridges on the enamel, like tiny bumps on your teeth.1

生存年代

126 到 120 百萬年前4

白堊紀早期

化石發現地

Burgos Province, Spain1

長度

10 到 12 m (33 到 39 ft)2

高度

2.9 m (9.5 ft)

估計值

最高速度

時速約 19 公里（12 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

跟 2.5 台汽車排成一排一樣長跟 67 根香蕉頭尾相接一樣長能在 19 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Demandasaurus 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)

Demandasaurus 時速約 19 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

Demandasaurus is the first diplodocoid sauropod ever described from the Cretaceous of the Iberian Peninsula (Spain and Portugal).2

Its closest relative is Nigersaurus, a dinosaur from Africa. This suggests that dinosaurs moved between Europe and Africa during the Early Cretaceous using a land bridge called the Apulian Route.2

The fossil skeleton of Demandasaurus was found disarticulated (bones scattered) in a river deposit, along with bones of spinosaurid theropods, small ornithopods, and a crocodile.1

Scientists identified nine unique features (autapomorphies) in the teeth and vertebrae of Demandasaurus that are not seen in any other dinosaur.2

The name Demandasaurus honors the Sierra de la Demanda mountain range, and the species name darwini celebrates the naturalist Charles Darwin.1

About 810 fossil bones and fragments were collected from the site, most belonging to a single Demandasaurus individual.1

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

?How big was Demandasaurus?

It was a medium sized sauropod, about 10 to 12 metres long. It stood about 3.5 metres tall at the hip and weighed around 5 tonnes.2 3

?What did Demandasaurus eat?

It was a plant-eater. Its teeth had special ridges on the enamel, like tiny bumps, which helped it chew tough plants.1

?Where was Demandasaurus found?

Its fossils were discovered in the Castrillo de la Reina Formation in Burgos Province, northern Spain. The site is called Tenadas de los Vallejos II.1 2

?Is Demandasaurus related to Nigersaurus?

Yes, its closest relative is Nigersaurus from Africa. This close relationship suggests that dinosaurs moved between Europe and Africa using a land bridge called the Apulian Route.1 2

給恐龍專家

學名: Demandasaurus
命名者: Torcida Fernández-Baldor et al. 20114
類群: 長脖子恐龍
科 / 演化支: Rebbachisauridae4
分類: Sauropodomorpha > Sauropoda > Diplodocoidea4
岩石的年代: 126 到 120 百萬年 (Barremian / Aptian)4
岩層: Castrillo de la Reina4
國家: 西班牙4
化石紀錄: The Paleobiology Database 收錄 2 筆4
發現: Demandasaurus was discovered in 1999 by the Archaeological-Palaeontological Group of Salas de los Infantes, and excavations took place from 2002 to 2004. It was named in 2011 by Fidel Torcida Fernández-Baldor and colleagues.1
仍有爭議: Scientists are not sure exactly how large Demandasaurus grew, because only one incomplete skeleton has been found.2