恐龍卡第 0275 張，共 2 027 張

Bistahieversor

名字的意思： “Bistahi destroyer”1

吃：肉暴龍類白堊紀晚期

Bistahieversor was a fierce meat-eating dinosaur that lived in what is now New Mexico, USA. It was a close cousin of the famous Tyrannosaurus rex and had a deep, strong snout for biting. Scientists call it the 'Bisti Beast' after the wild area where its bones were found.1

生存年代

84 到 72 百萬年前4

白堊紀晚期

化石發現地

New Mexico, USA (Bisti/De-na-zin Wilderness Area and nearby sites)2

長度

8 到 9 m (26 到 30 ft)1

體重

2.5 公噸到 3.3 公噸 (5,500 到 7,300 lb)1

高度

2.9 m (9.5 ft)

估計值

最高速度

時速約 27 公里（17 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 2 台汽車一樣重

跟 2 台汽車排成一排一樣長跟 50 根香蕉頭尾相接一樣長跟 160 隻狗一樣重跟 660 顆西瓜一樣重跟 4 整班小學生一樣重跟 7 隻北極熊一樣重能在 13 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Bistahieversor 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)

Bistahieversor 時速約 27 公里 (17 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

Bistahieversor had 64 teeth, more than many other tyrannosaurs.1

It had an extra opening above its eye, which scientists think held an air sac that made the skull lighter.1

A keel along its lower jaw helped strengthen its bite.1

Bistahieversor lived about 75.5 to 74.5 million years ago, during the Late Cretaceous.1

The first fossils of Bistahieversor were once mistaken for another dinosaur called Aublysodon.2

Both adult and juvenile skeletons have been found, giving scientists a good look at how it grew.2

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

?How big was Bistahieversor?

About 8 to 9 metres (26 to 30 feet) long and weighed between 2.5 and 3.3 metric tons (2.75 to 3.6 short tons).1 3

?Was Bistahieversor bigger than T. rex?

No, Bistahieversor was much smaller than Tyrannosaurus rex. T. rex could be over 12 metres (40 feet) long and weigh more than 8 metric tons.1

?What did Bistahieversor eat?

It was a meat-eater that hunted other dinosaurs. Its deep snout and strong bite helped it catch and eat prey.1 3

?Where was Bistahieversor found?

Its fossils were found in the Bisti/De-Na-Zin Wilderness Area in New Mexico, USA. That's why it's called the 'Bisti Beast'.1 3

?When did Bistahieversor live?

It lived about 75.5 to 74.5 million years ago, during the Late Cretaceous Period.1

?Did Bistahieversor have feathers?

Scientists are not sure. No feathers have been found with Bistahieversor fossils, but some of its close relatives may have had simple feathers.1

迷思破解王

迷思： Bistahieversor is often called a tyrannosaurid like T. rex.

真相： Scientists now think Bistahieversor was a close relative of tyrannosaurids, but not a true member of that family. It belongs to a group called Eutyrannosauria.1

給恐龍專家

學名: Bistahieversor
命名者: Carr and Williamson 20104
類群: 暴龍類
科 / 演化支: Tyrannosauridae4
分類: Theropoda > Tyrannosauroidea > Tyrannosauridae4
岩石的年代: 84 到 72 百萬年 (Campanian)4
岩層: Fruitland, Kirtland4
國家: 美國4
化石紀錄: The Paleobiology Database 收錄 4 筆4
發現: Bistahieversor was named in 2010 by Thomas Carr and Thomas Williamson. The first skeleton was found by Paul Sealey in the Bisti Wilderness Area of New Mexico.2
仍有爭議: Scientists are still debating exactly how Bistahieversor is related to other tyrannosaurs, and whether its deep snout evolved separately from that of T. rex.2