恐龍卡第 1929 張，共 2 027 張

Xenoceratops

名字的意思： “alien horned face”1

吃：植物角龍類白堊紀晚期

Xenoceratops was an early horned dinosaur that lived in Canada about 78 million years ago. It had a big frill on its head with spikes and two long horns above its eyes, making it look a bit like an alien. It was one of the oldest large horned dinosaurs ever found in North America.1

生存年代

84 到 72 百萬年前3

白堊紀晚期

化石發現地

Alberta, Canada, near the village of Foremost2

長度

6 m (20 ft)1

體重

1.8 公噸 (4,000 lb)1

高度

1.9 m (6.2 ft)

估計值

最高速度

時速約 34 公里（21 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 1 台汽車一樣重

跟 6 隻狗從鼻子接到尾巴一樣長跟 33 根香蕉頭尾相接一樣長跟 90 隻狗一樣重跟 360 顆西瓜一樣重跟 95 個幼兒園小朋友一樣重跟 56 個小學生一樣重跟 4 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）

Xenoceratops 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)

Xenoceratops 時速約 34 公里 (21 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

Xenoceratops is the oldest known ceratopsid dinosaur from Canada, living about 78 million years ago.2

Its name means 'alien horned face' because it was found in rocks that had not yielded horned dinosaur fossils before.2

The fossils were collected in 1958 by paleontologist Wann Langston Jr., but they sat in a museum for decades before scientists realized they belonged to a new species.1

Unlike Triceratops, Xenoceratops had spikes on its frill in addition to the two long brow horns.1

Xenoceratops was about 6 metres long and weighed more than 2 tons, about as heavy as a large rhinoceros.1

It lived in a subtropical environment in Alberta, which at that time had no snow or frost.1

Scientists think Xenoceratops is the most primitive centrosaurine, meaning it branched off early in the evolution of this group of horned dinosaurs.2

Xenoceratops 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Xenoceratops 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： Xenoceratops is just a small, unimportant dinosaur.

真相： Xenoceratops is important because it is the oldest known large horned dinosaur from Canada, and it shows that horned dinosaurs evolved their fancy frills and horns very early.1

給恐龍專家

學名: Xenoceratops
命名者: Ryan et al. 20123
類群: 角龍類
科 / 演化支: Ceratopsidae3
分類: Ornithischia > Ceratopsia > Ceratopsidae3
岩石的年代: 84 到 72 百萬年 (Campanian)3
岩層: Foremost3
國家: 加拿大3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Xenoceratops was named in 2012 by Michael Ryan and colleagues. The fossils were originally collected in 1958 by Wann Langston Jr. from a bone bed in the Foremost Formation of Alberta, Canada, and later rediscovered in the Canadian Museum of Nature.2
仍有爭議: Scientists are not sure exactly what the complete skull of Xenoceratops looked like, because only parts of the frill and horns have been found.2