恐龍卡第 1656 張，共 2 027 張

Sierraceratops

名字的意思： “Sierra horned face”1

吃：植物角龍類白堊紀晚期

Sierraceratops was a medium-sized horned dinosaur that lived in what is now New Mexico, USA. It had short but massive brow horns and a long frill with big holes in it. This plant-eater was a cousin of the famous Triceratops.1

生存年代

84 到 66 百萬年前4

白堊紀晚期

化石發現地

Hall Lake Formation, Sierra County, New Mexico, USA1 4

長度

4.5 到 5.5 m (15 到 18 ft)1

體重

1.5 公噸到 2 公噸 (3,300 到 4,400 lb)1

高度

1.5 到 2 m (4.9 到 6.6 ft)1

最高速度

時速約 35 公里（22 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 1.5 台汽車一樣重

跟 6 隻狗從鼻子接到尾巴一樣長跟 31 根香蕉頭尾相接一樣長跟 100 隻狗一樣重跟 400 顆西瓜一樣重跟 2.5 整班小學生一樣重跟 4 隻北極熊一樣重能在 10 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Sierraceratops 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)

Sierraceratops 時速約 35 公里 (22 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

Sierraceratops was first thought to be a Torosaurus, but scientists later realized it was a new species.1

Its fossils were discovered in 1997 by geologist Gregory H. Mack on a ranch owned by Ted Turner, founder of CNN.1

The frill of Sierraceratops had large holes called parietal fenestrae, separated by an oval-shaped bar of bone.1

Sierraceratops lived about 72 million years ago, during the Late Cretaceous period.1

It was a chasmosaurine ceratopsid, part of a group of horned dinosaurs that lived in the southern part of ancient Laramidia.1

The name Sierraceratops honors Sierra County in New Mexico, where the fossils were found.1

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

?How big was Sierraceratops?

About 4.5 metres (15 feet) long. Its skull was about 1.5 metres (5 feet) long.3

?What did Sierraceratops eat?

It was a plant-eater, like other horned dinosaurs. It ate plants with its beak and cheek teeth.3

?When did Sierraceratops live?

About 72 million years ago, during the Late Cretaceous period.1

?Is Sierraceratops a dinosaur?

Yes, it is a dinosaur. It is a type of horned dinosaur called a ceratopsian.1

迷思破解王

迷思： Sierraceratops was just a young Torosaurus.

真相： Sierraceratops is a distinct genus with a different frill shape and older age than Torosaurus.1

給恐龍專家

學名: Sierraceratops
命名者: Dalman et al. 20224
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: Hall Lake4
國家: 美國4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Fossils of Sierraceratops were first found in 1997 by geologist Gregory H. Mack on Ted Turner's ranch in New Mexico. The species was named and described in 2022 by Dalman and colleagues.1
仍有爭議: Scientists are still debating exactly how Sierraceratops is related to other horned dinosaurs like Bravoceratops and Coahuilaceratops.1 2