恐龍卡第 0612 張，共 2 027 張

Eotriceratops

名字的意思： “dawn three-horned face”1

吃：植物角龍類白堊紀晚期

Eotriceratops was a huge plant-eating dinosaur with a big frill and three horns on its face. It lived in what is now Canada, and it was one of the earliest relatives of the famous Triceratops. This dinosaur was as heavy as two elephants!1

生存年代

72 到 66 百萬年前2

白堊紀晚期

化石發現地

Alberta, Canada2 1

長度

8.5 到 9 m (28 到 30 ft)1

體重

11 公噸 (24,300 lb)1

高度

2.7 m (8.9 ft)

估計值

最高速度

時速約 20 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

牠有多重？

跟 7 台汽車一樣重

跟 2 台汽車排成一排一樣長跟 50 根香蕉頭尾相接一樣長跟 2 頭大象一樣重跟 2200 顆西瓜一樣重跟 14 整班小學生一樣重跟 24 隻北極熊一樣重能在 18 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Eotriceratops 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)

Eotriceratops 時速約 20 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

Eotriceratops lived about 68.8 million years ago, which is older than Triceratops.1

Its skull was huge, about 3 metres (9.8 feet) long, almost as long as a small car.1

The horns above its eyes were about 80 centimetres (2.6 feet) long and curved forward.1

Its frill had long, spindle-shaped bony bumps along the edge, which were different from those of Triceratops.1

Three bite marks on its skull show that scavengers may have nibbled on it after it died.1

The first fossil of Eotriceratops was discovered in 1910 by Barnum Brown, but he ignored it. It was rediscovered in 2001 by a cook named Glen Guthrie.1

Eotriceratops had at least 35 teeth in its upper jaw to grind tough plants.1

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

?How big was Eotriceratops?

It was about 8.5 to 9 metres (28 to 30 feet) long and weighed around 11 metric tons (12 short tons), as heavy as two African elephants.1

?What did Eotriceratops eat?

It was a plant-eater (herbivore). It had at least 35 teeth in its upper jaw to grind tough plants.1

?When did Eotriceratops live?

It lived about 68.8 million years ago, during the late Cretaceous period, which is older than Triceratops.1

?Where was Eotriceratops found?

Its fossils were found in the Horseshoe Canyon Formation in Dry Island Buffalo Jump Provincial Park, Alberta, Canada.1

?Is Eotriceratops a dinosaur?

Yes, it is a dinosaur. It is a type of herbivorous ceratopsian dinosaur, closely related to Triceratops.1

?How many horns did Eotriceratops have?

It had three horns: two large ones above its eyes (about 80 cm or 31.5 inches long) and a smaller one on its nose.1

迷思破解王

迷思： Some people think Eotriceratops is just a young Triceratops.

真相： Scientists believe Eotriceratops is a different, older relative of Triceratops, not a juvenile.1

給恐龍專家

學名: Eotriceratops
命名者: Wu et al. 20072
類群: 角龍類
科 / 演化支: Ceratopsidae2
分類: Ornithischia > Ceratopsia > Ceratopsidae2
岩石的年代: 72 到 66 百萬年 (Maastrichtian)2
岩層: Horseshoe Canyon2
國家: 加拿大2
化石紀錄: The Paleobiology Database 收錄 1 筆2
發現: The first skeleton was found in 1910 by Barnum Brown in Alberta, Canada, but he left it. In 2001, a team rediscovered it, and in 2007 scientists named it Eotriceratops xerinsularis.1
仍有爭議: Scientists are not sure if some fossils from New Mexico belong to Eotriceratops or to other horned dinosaurs like Ojoceratops.1