恐龍卡第 1560 張，共 2 027 張

Rubeosaurus

名字的意思： “bramble lizard”1

吃：植物角龍類白堊紀晚期

Rubeosaurus was a horned dinosaur with a big frill and spikes on its head. It lived in what is now Montana, USA, about 75 million years ago. It was a plant eater and walked on four legs.1 2

生存年代

84 到 72 百萬年前5

白堊紀晚期

化石發現地

Montana, USA, in the Two Medicine Formation1 2

長度

5 到 5.5 m (16 到 18 ft)4

體重

1.8 公噸到 2.7 公噸 (4,000 到 6,000 lb)4

高度

1.8 m (5.9 ft)4

最高速度

時速約 32 公里（20 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 2 台汽車一樣重

跟 6 隻狗從鼻子接到尾巴一樣長跟 31 根香蕉頭尾相接一樣長跟 140 隻狗一樣重跟 540 顆西瓜一樣重跟 3 整班小學生一樣重跟 6 隻北極熊一樣重能在 11 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Rubeosaurus 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)

Rubeosaurus 時速約 32 公里 (20 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

Rubeosaurus had two long spikes on its neck frill that leaned inward toward each other, a feature that is unique to this dinosaur.3

The spikes on its frill were much shorter than those of its close relative Styracosaurus, with the longest measuring about 295 millimeters (11.6 inches).1

Rubeosaurus is known from very few fossils, only a few skull pieces, which made it one of the most mysterious horned dinosaurs.3

Scientists think Rubeosaurus was closely related to Einiosaurus, Achelousaurus, and Pachyrhinosaurus, based on the shape of its skull bones.3

Rubeosaurus lived in the same area and time as other horned dinosaurs like Einiosaurus and Achelousaurus, but they are found at different levels in the rock.3

The first fossil of Rubeosaurus was a piece of the back of the skull, found in Montana and described in 1930.1

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

?How big was Rubeosaurus?

Scientists do not know its exact size because only a few skull pieces have been found, but it was probably about 5 to 5.5 metres (16 to 18 feet) long and weighed around 1.8 to 2.7 metric tons (2.0 to 3.0 short tons), like its close relative Styracosaurus.1 4

?What did Rubeosaurus eat?

Rubeosaurus was a plant eater. It had a beak and shearing cheek teeth that helped it slice up plants.1 4

?Did Rubeosaurus have feathers?

No, Rubeosaurus did not have feathers. It was a horned dinosaur with scales, like other ceratopsians.1

?When did Rubeosaurus live?

Rubeosaurus lived about 75 million years ago, during the Late Cretaceous Period.1 3

?Where was Rubeosaurus found?

All Rubeosaurus fossils have been found in the Two Medicine Formation of Montana, USA, near Landslide Butte on the Blackfeet Nation.3

?How many spikes did Rubeosaurus have?

Rubeosaurus had at least two long spikes on each side of its neck frill, and the longest spike measured about 295 millimetres (11.6 inches).1

?Was Rubeosaurus a dinosaur?

Yes, Rubeosaurus was a dinosaur. It was a horned dinosaur called a ceratopsian.1

?Is Rubeosaurus the same as Styracosaurus?

Rubeosaurus was originally named as a species of Styracosaurus, but scientists now think it is a different genus. Some researchers still consider it a species of Styracosaurus.1 3

迷思破解王

迷思： Rubeosaurus is just a species of Styracosaurus.

真相： Scientists used to think so, but in 2010 they gave it its own genus, Rubeosaurus, because its skull features are different. Some scientists still debate this, and it may be a species of Styracosaurus again.1

給恐龍專家

學名: Rubeosaurus
命名者: McDonald and Horner 20105
類群: 角龍類
科 / 演化支: Ceratopsidae5
分類: Ornithischia > Ceratopsia > Ceratopsidae5
岩石的年代: 84 到 72 百萬年 (Campanian)5
岩層: Two Medicine5
國家: 美國5
化石紀錄: The Paleobiology Database 收錄 2 筆5
發現: The first fossil was found in Montana and named Styracosaurus ovatus by Charles Gilmore in 1930. In 2010, Andrew McDonald and Jack Horner gave it the new name Rubeosaurus after studying more fossils.1 3
仍有爭議: Scientists still debate whether Rubeosaurus is its own genus or just a species of Styracosaurus, because the fossils are so incomplete.1