恐龍卡第 1655 張，共 2 027 張

Sidersaura

名字的意思： “star lizard”1

吃：植物長脖子恐龍白堊紀早期

Sidersaura was a huge, long-necked plant-eater that lived in what is now Argentina. It may have been one of the biggest members of its dinosaur family, reaching about the length of a school bus. Its star-shaped tail bones gave it the name 'star lizard'.1

生存年代

110 到 106 百萬年前3

白堊紀早期

化石發現地

Neuquén Province, Argentina1 2

長度

18 到 20 m (59 到 66 ft)1

體重

15 公噸 (33,100 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 2.5 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 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）

Sidersaura 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)

Sidersaura 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

Sidersaura had a hole between its forehead and top of the skull called a frontoparietal foramen, which is rare among sauropods. Only a few other long-necked dinosaurs like Apatosaurus have it.1

Its thigh bone (femur) was 1.55 metres (5.1 feet) long, making it the biggest known of any rebbachisaurid dinosaur.1

The bones of four Sidersaura individuals were discovered together, including one found just 20 metres (66 feet) from the skeleton of the giant meat-eater Meraxes.1

Sidersaura belongs to a group called rebbachisaurids, which mostly lived in the southern continents. It was one of the last of its kind before they went extinct.1 2

The star-shaped haemal arches (bones under the tail) of Sidersaura earned it the name 'star lizard'. No other named dinosaur has exactly this shape.1

Sidersaura lived about 106 million years ago during the Early Cretaceous period, in a region that is now the desert-like Huincul Formation in Argentina.3 2

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

?How big was Sidersaura?

Sidersaura was about 18 to 20 metres (59 to 66 ft) long and weighed around 15 tons. It was one of the largest members of its dinosaur family.1 2

?What did Sidersaura eat?

Sidersaura was a plant-eater (herbivore). It ate plants, using its long neck to reach high or low vegetation.1 3

?When did Sidersaura live?

Sidersaura lived about 106 million years ago, during the Early Cretaceous period.1

?Is Sidersaura a dinosaur?

Yes, Sidersaura is a dinosaur. It is a sauropod dinosaur, specifically a rebbachisaurid.1 3

給恐龍專家

學名: Sidersaura
命名者: Lerzo et al. 20243
類群: 長脖子恐龍
科 / 演化支: Rebbachisauridae3
分類: Sauropodomorpha > Sauropoda > Diplodocoidea3
岩石的年代: 110 到 106 百萬年 (Albian)3
岩層: Huincul3
國家: 阿根廷3
化石紀錄: The Paleobiology Database 收錄 2 筆3
發現: The fossils of Sidersaura were found in 2012 near Villa El Chocón, Argentina, and were dug up over five years. Scientists led by Lucas Lerzo named it in 2024, after Mara Ripoll, a fossil preparator.1
仍有爭議: Scientists are still debating exactly how Sidersaura is related to other rebbachisaurids, especially because it has some features that are also seen in titanosaurs.1 2