恐龍卡第 0064 張，共 2 027 張

Albertosaurus

名字的意思： “Alberta lizard”1

吃：肉暴龍類白堊紀晚期

Albertosaurus was a fierce meat-eater that lived in Canada about 70 million years ago. It was smaller and faster than its famous cousin T. rex, but still one of the top predators of its time.1 2

生存年代

86 到 66 百萬年前4

白堊紀晚期

化石發現地

Alberta, Canada, and possibly Montana and Wyoming, USA1 4

長度

9 到 10 m (30 到 33 ft)1 2

體重

1.3 公噸到 2.5 公噸 (2,900 到 5,500 lb)2

高度

3 到 3.5 m (9.8 到 11 ft)1

最高速度

時速約 30 公里（19 英里）

跑步: Australian Museum; Thulborn 1982 (walking 14 to 21)

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 2 台汽車排成一排一樣長跟 56 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）

Albertosaurus 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)

Albertosaurus 時速約 30 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

Albertosaurus had a short bony crest above its eyes that may have been brightly colored and used to attract a mate.1

Fossils of over 20 Albertosaurus were found together at one site, suggesting they may have hunted in packs.1

Albertosaurus could run up to 30 km/h (about 19 mph) when chasing prey.1

Its skull grew to about 1 metre (3.3 feet) long and held 34 to 38 teeth in the upper jaw and 28 to 32 in the lower jaw.2

The first Albertosaurus fossil was discovered by geologist Joseph Burr Tyrrell in 1884 while he was looking for coal.1 2

Albertosaurus lived in a warm, semi-tropical environment with ferns, conifers, and flowering plants.1 2

Unlike T. rex, Albertosaurus had a lighter build and longer legs, which may have made it a swifter predator.1 2

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

?How big was Albertosaurus?

Albertosaurus grew up to 8 to 9 metres (26 to 30 ft) long and weighed between 1.7 and 3.0 metric tons (1.9 to 3.3 short tons).3

?Was Albertosaurus bigger than T. rex?

No, Albertosaurus was much smaller than Tyrannosaurus rex. T. rex was larger and heavier.3

?How fast could Albertosaurus run?

Albertosaurus could reach walking speeds of 14 to 21 km/h (8 to 13 mph), and may have been able to run up to 30 km/h (about 19 mph) when chasing prey.3 1

?Did Albertosaurus have feathers?

The sources do not mention feathers on Albertosaurus. It was a large tyrannosaurid, and while some relatives may have had feathers, there is no direct evidence for Albertosaurus.3

?What did Albertosaurus eat?

Albertosaurus was a meat-eater that likely hunted large dinosaurs like hadrosaurs and ceratopsians. It may have used a 'bite and slice' technique.1

?Did Albertosaurus live in packs?

Yes, fossils of over 20 Albertosaurus found together at one site suggest they may have hunted in packs.3 1

?When did Albertosaurus live?

Albertosaurus lived during the Late Cretaceous period, about 71 million years ago.3

?Why did Albertosaurus have a crest?

Albertosaurus had a short bony crest above its eyes that may have been brightly colored and used to attract a mate.3 1

迷思破解王

迷思： Some people think Albertosaurus was just a smaller version of T. rex.

真相： Albertosaurus belonged to a different subfamily (Albertosaurinae) and had a shorter, lower skull, longer legs, and a bony crest above its eyes, unlike T. rex.1

給恐龍專家

學名: Albertosaurus
命名者: Osborn 19054
類群: 暴龍類
科 / 演化支: Tyrannosauridae4
分類: Theropoda > Tyrannosauroidea > Tyrannosauridae4
岩石的年代: 86 到 66 百萬年 (Santonian / Maastrichtian)4
岩層: Horseshoe Canyon, Judith River, Corral de Enmedio4
國家: 加拿大, 美國, 墨西哥4
化石紀錄: The Paleobiology Database 收錄 32 筆4
發現: Albertosaurus was first discovered on June 9, 1884, by geologist Joseph Burr Tyrrell along the Red Deer River in Alberta, Canada. He found an incomplete skull with teeth while searching for coal. It was named Albertosaurus by Henry Fairfield Osborn in 1905.1 2 4
仍有爭議: Scientists debate whether some fossils from Montana and Wyoming belong to Albertosaurus or to a different, unnamed species.1