恐龍卡第 1409 張，共 2 027 張

Pentaceratops

名字的意思： “five-horned face”1

吃：植物角龍類白堊紀晚期

Pentaceratops was a plant-eating dinosaur that lived about 76 to 73 million years ago. It had a huge skull with five horns: two long ones above its eyes, a short one on its nose, and two long spikes sticking out from its cheeks. Its head frill was very long and had small triangular hornlets along the edge.1

生存年代

84 到 66 百萬年前2

白堊紀晚期

化石發現地

New Mexico, Colorado and Texas, USA; also possibly Alberta, Canada2 1

長度

5.5 到 6 m (18 到 20 ft)1

體重

2.5 公噸 (5,500 lb)1

高度

1.9 m (6.2 ft)

估計值

最高速度

時速約 31 公里（19 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 1.5 台汽車一樣重

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 120 隻狗一樣重跟 500 顆西瓜一樣重跟 3 整班小學生一樣重跟 6 隻北極熊一樣重能在 12 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Pentaceratops 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)

Pentaceratops 時速約 31 公里 (19 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

Pentaceratops means 'five-horned face' because it had five horns: two brow horns, one nose horn, and two long spikes on its cheekbones.1

Its skull could be over 2.3 meters (7.5 feet) long, making it one of the largest skulls of any land animal.1

Pentaceratops lived alongside the duck-billed dinosaur Parasaurolophus and the tyrannosaur Bistahieversor.1

The first fossils were found in 1921 by Charles Hazelius Sternberg in New Mexico. The dinosaur was named in 1923 by Henry Fairfield Osborn.1

One very large Pentaceratops skull was later renamed Titanoceratops because it looked more like Triceratops.1

Pentaceratops is used as a guide fossil: its appearance marks the start of the Kirtlandian land vertebrate age.1

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

?How big was Pentaceratops?

Pentaceratops was about 5.5 to 6 meters (18 to 20 feet) long and weighed around 2.5 metric tons (2.8 short tons).1

?What did Pentaceratops eat?

Pentaceratops was an herbivore, meaning it ate plants. It likely fed on ferns, cycads, and conifers using its sharp beak and cheek teeth.1

?When did Pentaceratops live?

Pentaceratops lived during the Late Cretaceous Period, about 76 to 73 million years ago.1

?Where was Pentaceratops found?

Pentaceratops fossils have been found in the Kirtland Formation in the San Juan Basin of New Mexico, USA.1

?Did Pentaceratops have feathers?

No, Pentaceratops did not have feathers. It was a ceratopsian dinosaur with scaly skin, like other horned dinosaurs.1

?Was Pentaceratops bigger than Triceratops?

No, Pentaceratops was smaller than Triceratops. Pentaceratops was about 5.5 to 6 meters long, while Triceratops could reach up to 9 meters.1

?How many horns did Pentaceratops have?

Pentaceratops had five horns: two long brow horns, one short nose horn, and two long spikes on its cheekbones.1

?Could Pentaceratops swim?

Nobody knows for sure, but Pentaceratops was a land dinosaur with sturdy legs, so it probably did not swim often.1

迷思破解王

迷思： Some people think Pentaceratops had five horns on its head like a crown.

真相： The 'fifth horn' is actually a long spike on each cheekbone (the jugal bone), not a true horn on the skull roof.1

給恐龍專家

學名: Pentaceratops
命名者: Osborn 19232
類群: 角龍類
科 / 演化支: Ceratopsidae2
分類: Ornithischia > Ceratopsia > Ceratopsidae2
岩石的年代: 84 到 66 百萬年 (Campanian / Maastrichtian)2
岩層: Fruitland, Kirtland, Williams Fork2
國家: 美國2
化石紀錄: The Paleobiology Database 收錄 14 筆2
發現: The first Pentaceratops fossils were collected in 1921 by Charles Hazelius Sternberg in the San Juan Basin of New Mexico. The species was named Pentaceratops sternbergii by Henry Fairfield Osborn in 1923, honoring Sternberg.1
仍有爭議: Scientists debate whether the species Pentaceratops aquilonius from Canada really belongs to Pentaceratops or is a different dinosaur called Spiclypeus.1