恐龍卡第 0456 張，共 2 027 張

Crittendenceratops

名字的意思： “horned face from the Fort Crittenden Formation”1

吃：植物角龍類白堊紀晚期

Crittendenceratops was a horned dinosaur that lived in what is now Arizona, USA, about 73 million years ago. It had a big frill on its head with hook-like flanges and was a plant-eater. This dinosaur is the first one ever given a scientific name from the Fort Crittenden Formation.1 6

生存年代

84 到 72 百萬年前6

白堊紀晚期

化石發現地

Adobe Canyon, Santa Rita Mountains, Santa Cruz County, Arizona, USA6 2

長度

3.5 m (11 ft)3

體重

680 kg 到 750 kg (1,500 到 1,700 lb)3 4

高度

1.2 m (3.9 ft)

估計值

最高速度

時速約 43 公里（27 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 38 隻狗一樣重

跟 4 隻狗從鼻子接到尾巴一樣長跟 19 根香蕉頭尾相接一樣長跟 150 顆西瓜一樣重跟 39 個幼兒園小朋友一樣重跟 23 個小學生一樣重能在 8.4 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Crittendenceratops 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)

Crittendenceratops 時速約 43 公里 (27 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

Crittendenceratops had forward-curving, hook-like flanges along the top of its frill, which were nearly the size of the epiparietal bones.1 2

It belonged to a group of horned dinosaurs called Nasutoceratopsini, which also includes Avaceratops, Nasutoceratops, and Yehuecauhceratops.1

The fossils of Crittendenceratops were found in the shale member of the Fort Crittenden Formation, which was deposited by rivers, lakes, and alluvial fans.2

The species name krzyzanowskii honors Stan Krzyzanowski, who discovered and collected the specimen.2

Crittendenceratops lived during the late Campanian stage of the Cretaceous, about 73 million years ago.1 2

The frill of Crittendenceratops had at least five epiparietal loci around its margin, which are typical of centrosaurine ceratopsids.2

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

?How big was Crittendenceratops?

It was about the size of a present-day bear, smaller than Triceratops which was roughly the size of a modern elephant.5

?Did Crittendenceratops have horns?

Yes, it had one horn on its bony skull, unlike Triceratops which had three.5

?What did Crittendenceratops eat?

It was a plant-eater, like all ceratopsian dinosaurs.1

?When did Crittendenceratops live?

It lived about 73 million years ago, during the late Campanian stage of the Cretaceous Period.1 5

給恐龍專家

學名: Crittendenceratops
命名者: Dalman et al. 20186
類群: 角龍類
科 / 演化支: Ceratopsidae6
分類: Ornithischia > Ceratopsia > Ceratopsidae6
岩石的年代: 84 到 72 百萬年 (Campanian)6
岩層: Fort Crittenden6
國家: 美國6
化石紀錄: The Paleobiology Database 收錄 2 筆6
發現: Crittendenceratops was named by Sebastian G. Dalman and colleagues in 2018 based on partial skull bones from two individuals found in the Fort Crittenden Formation of Arizona. The species name honors Stan Krzyzanowski, who discovered the fossils.6 2
仍有爭議: Scientists are still debating whether the presence of Crittendenceratops in Arizona weakens the idea of separate northern and southern dinosaur provinces in ancient North America.2