恐龍卡第 0172 張，共 2 027 張

Arrhinoceratops

名字的意思： “no nose-horn face”1 2

吃：植物角龍類白堊紀晚期

Arrhinoceratops was a horned dinosaur that lived in Canada near the end of the Age of Dinosaurs. It had a big frill on its head and two long brow horns, but its nose horn was short and blunt. Scientists know it mostly from one skull found in Alberta.1 2

生存年代

84 到 66 百萬年前4

白堊紀晚期

化石發現地

Alberta, Canada1 2 4

長度

4.5 到 6 m (15 到 20 ft)1 2

體重

1.3 公噸 (2,900 lb)1

高度

2.5 m (8.2 ft)3

最高速度

時速約 37 公里（23 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 65 隻狗一樣重

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 260 顆西瓜一樣重跟 68 個幼兒園小朋友一樣重跟 41 個小學生一樣重跟 3 隻北極熊一樣重能在 9.7 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Arrhinoceratops 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)

Arrhinoceratops 時速約 37 公里 (23 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

Arrhinoceratops lived a few million years before its famous relative Triceratops.1

The name 'Arrhinoceratops' means 'no nose-horn face', but scientists later realized it actually did have a nose horn, just a short one.1

Only one complete skull of Arrhinoceratops has been found, so scientists do not know much about the rest of its body.1 2

Its skull had a broad, square frill with two oval openings and a scalloped rear edge.1

The frill of Arrhinoceratops was decorated with about nine bony bumps called osteoderms along the sides.1

Arrhinoceratops lived in a wet coastal environment with warm summers and cool winters, and may have been hunted by the tyrannosaur Albertosaurus.1

The first Arrhinoceratops skull was found by a University of Toronto expedition in 1923 along the Red Deer River in Alberta.1

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

?How big was Arrhinoceratops?

Estimates vary. Some popular science books estimate it was about 6 metres (20 ft) long, while Gregory S. Paul estimated 4.5 metres (15 ft) and 1.3 tonnes (2,900 lb).1 2

?What did Arrhinoceratops eat?

Arrhinoceratops was a herbivore. It likely ate ferns, cycads and conifers, using its sharp beak to bite off leaves or needles.1

?When did Arrhinoceratops live?

It lived during the Late Cretaceous, about 72 to 67 million years ago, a few million years before Triceratops.2 1

?Where was Arrhinoceratops found?

Its remains have been found in Canada, specifically along the Red Deer River in Alberta.1 2

?Did Arrhinoceratops have a nose horn?

Yes, it did have a nose horn, but it was short and blunt. The name 'no nose-horn face' was based on a misunderstanding.1

?Was Arrhinoceratops a dinosaur?

Yes, Arrhinoceratops was a ceratopsian dinosaur, a type of horned, herbivorous dinosaur.1 2

迷思破解王

迷思： Arrhinoceratops had no nose horn at all.

真相： It actually had a short, blunt nose horn, like many other horned dinosaurs.1

給恐龍專家

學名: Arrhinoceratops
命名者: Parks 19254
類群: 角龍類
科 / 演化支: Ceratopsidae4
分類: Ornithischia > Ceratopsia > Ceratopsidae4
岩石的年代: 84 到 66 百萬年 (Campanian / Maastrichtian)4
岩層: Horseshoe Canyon4
國家: 加拿大4
化石紀錄: The Paleobiology Database 收錄 3 筆4
發現: William Arthur Parks named Arrhinoceratops in 1925 based on a skull found in Alberta, Canada, by a University of Toronto expedition in 1923.1 4
仍有爭議: Scientists are not sure exactly how Arrhinoceratops is related to other horned dinosaurs like Torosaurus and Anchiceratops.1