恐龍卡第 0210 張，共 2 027 張

Avaceratops

名字的意思： “Ava's horned face”1

吃：植物角龍類白堊紀晚期

Avaceratops was a small, plant-eating dinosaur with a big frill on its head and a parrot-like beak. It lived in what is now Montana, USA, during the Late Cretaceous period, about 77 million years ago.2 1

生存年代

84 到 72 百萬年前3

白堊紀晚期

化石發現地

Montana, USA, and possibly Alberta, Canada2 3

長度

2.3 到 4.2 m (7.5 到 14 ft)2

體重

最多 1 公噸 (2,200 lb)2

高度

1.4 m (4.6 ft)

估計值

最高速度

時速約 40 公里（25 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 50 隻狗一樣重

跟 4 隻狗從鼻子接到尾巴一樣長跟 23 根香蕉頭尾相接一樣長跟 200 顆西瓜一樣重跟 53 個幼兒園小朋友一樣重跟 31 個小學生一樣重跟 2 隻北極熊一樣重能在 9 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Avaceratops 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)

Avaceratops 時速約 40 公里 (25 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

Avaceratops had a solid frill, unlike many other horned dinosaurs that had holes in their frills.2

The first fossil was found in 1981 by Eddie Cole on a ranch in Montana, and the dinosaur was named after Eddie's wife, Ava.2

Avaceratops was the first new ceratopsid dinosaur named in 36 years, since Pachyrhinosaurus in 1950.2

The type specimen might have been a juvenile, and a 2019 study showed it was still growing quickly when it died.2

A larger skull, MOR 692, shows that adult Avaceratops could have brow horns about 25 centimetres (9.8 inches) long.2

Avaceratops lived in a wet, heavily forested habitat, unlike the open plains where some other horned dinosaurs lived.2

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

?How big was Avaceratops?

The first fossil was about 2.3 metres (7.5 ft) long, but that was a juvenile. An adult may have reached 4.2 metres (14 ft) and weighed about one tonne.2 1

?What did Avaceratops eat?

Avaceratops was a herbivore. It ate plants like ferns, cycads and conifers, using its sharp beak to bite off leaves.2

?Did Avaceratops have horns?

Yes, adult Avaceratops had brow horns about 25 centimetres (9.8 in) long. It may not have had a nose horn.2

?When did Avaceratops live?

Avaceratops lived during the Late Cretaceous Period, about 77 million years ago.2 1

?Where was Avaceratops found?

Avaceratops fossils were found in the Judith River Formation of Montana, USA.2 1

?Why is it called Avaceratops?

The name means 'Ava's horned face'. It was named after Ava Cole, the wife of the fossil finder Eddie Cole.2

迷思破解王

迷思： Avaceratops was a tiny dinosaur, only about 2.3 metres long.

真相： The first skeleton was small, but it may have been a juvenile. A larger skull suggests adults could reach over 4 metres long.2

給恐龍專家

學名: Avaceratops
命名者: Dodson 19863
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: Judith River, Oldman3
國家: 美國, 加拿大3
化石紀錄: The Paleobiology Database 收錄 3 筆3
發現: Eddie Cole found the first bones in 1981 on a ranch in Montana. Peter Dodson named it Avaceratops lammersi in 1986, after Cole's wife Ava and the Lammers family who owned the ranch.2
仍有爭議: Scientists are not sure where Avaceratops fits in the dinosaur family tree, because the best skeleton is from a young animal, and young dinosaurs can look more primitive than adults.2