恐龍卡第 0312 張，共 2 027 張

Brontotholus

名字的意思： “thunder dome”1

吃：植物腫頭龍類白堊紀晚期

Brontotholus was a dome-headed dinosaur that lived about 75 million years ago. It walked on two legs and had a thick, bony dome on its skull. This dinosaur was a plant-eater and one of the biggest dome-headed dinosaurs in North America.1 2

生存年代

84 到 72 百萬年前6

白堊紀晚期

化石發現地

Montana, USA and Alberta, Canada6 1

長度

3.8 m (12 ft)1

體重

最多 250 kg (551 lb)3

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？

牠有多重？

跟 12 隻狗一樣重

跟 4 隻狗從鼻子接到尾巴一樣長跟 21 根香蕉頭尾相接一樣長跟 50 顆西瓜一樣重跟 13 個幼兒園小朋友一樣重跟 8 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）

Brontotholus 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)

Brontotholus 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

Brontotholus is the third largest dome-headed dinosaur known from North America, after Pachycephalosaurus and Platytholus.1

Its name comes from the 1985 movie Mad Max Beyond Thunderdome, because one fossil was found at a place called 'Beyond Thunder Dome'.1

The first fossil of Brontotholus was found in 1987 by Bob Makela in Montana.1

Scientists know Brontotholus mostly from its skull domes, because the rest of the skeleton is rarely preserved.2

Brontotholus lived during the Late Cretaceous period, about 75 million years ago.1 2

This dinosaur was a plant-eater, even though its thick dome might make it look like a fighter.6

The species name harmoni honors Robert 'Bob' Harmon, a fossil preparator at the Museum of the Rockies.1

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

?How big was Brontotholus?

About 3.8 metres (12.5 feet) long. That makes it a dome headed animal, after Pachycephalosaurus and Platytholus.1

?What did Brontotholus eat?

It was a plant-eater, also called an herbivore.4

?When did Brontotholus live?

It lived about 75 million years ago, during the Late Cretaceous period.1 5

?Where was Brontotholus found?

Fossils were found in Montana, USA, and Alberta, Canada.1

迷思破解王

迷思： Dome-headed dinosaurs like Brontotholus used their domes for head-butting each other.

真相： Scientists are not sure. Some think the domes were for display or species recognition, not for fighting.1

給恐龍專家

學名: Brontotholus
命名者: Woodruff et al. 20256
類群: 腫頭龍類
科 / 演化支: Pachycephalosauridae6
分類: Ornithischia > Pachycephalosauria6
岩石的年代: 84 到 72 百萬年 (Campanian)6
岩層: Two Medicine, Oldman6
國家: 美國, 加拿大6
化石紀錄: The Paleobiology Database 收錄 4 筆6
發現: Brontotholus was named in 2025 by Woodruff, Horner, Goodwin and Evans. The first fossil was found in 1987 in Montana, but it took many years before scientists realized it was a new species.1
仍有爭議: Scientists are not sure if all five fossils belong to Brontotholus or if some might be other dome-headed dinosaurs.1