恐龍卡第 0325 張，共 2 027 張

Calamosaurus

名字的意思： “reed lizard”1

吃：肉暴龍類白堊紀早期

Calamosaurus was a small, meat-eating dinosaur that lived on the Isle of Wight in England during the Early Cretaceous. It was a relative of the mighty Tyrannosaurus rex, but much smaller and lighter. Scientists know it from just a few neck bones, so it is still a bit mysterious.1 3

生存年代

126 到 120 百萬年前3

白堊紀早期

化石發現地

Isle of Wight, England, United Kingdom1 3

長度

3.5 m (11 ft)1

高度

1.3 m (4.3 ft)

估計值

最高速度

時速約 50 公里（31 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

跟 4 隻狗從鼻子接到尾巴一樣長跟 19 根香蕉頭尾相接一樣長能在 7.2 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Calamosaurus 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)

Calamosaurus 時速約 50 公里 (31 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

Calamosaurus is known from only two neck vertebrae, which are about 40 mm (1.6 inches) long each.1

The name Calamosaurus means 'reed lizard', because the vertebrae look light and slender like a reed.1

Scientists think Calamosaurus might be a very early relative of Tyrannosaurus rex, belonging to a group called tyrannosauroids.1 2

The fossils were collected by Reverend William Fox, a fossil hunter, in the 1800s.1

Calamosaurus lived in a floodplain environment with rivers and lakes, and sometimes wildfires.1

Some scientists think Calamosaurus might be a basal alvarezsauroid instead of a tyrannosauroid, showing that its family tree is still debated.1

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

?How big was Calamosaurus?

It was about 3.5 metres long, which is roughly the size of a small car.1

?Is Calamosaurus a dinosaur?

Yes, it is a small theropod dinosaur from the Early Cretaceous period.1

?Why is Calamosaurus called 'reed lizard'?

Its name means 'reed lizard' because its neck bones are light and slender, like a reed.1

迷思破解王

迷思： Calamosaurus was a large, powerful predator like Tyrannosaurus rex.

真相： Calamosaurus was actually a small dinosaur, only about 3.5 metres (11 feet) long, and lightly built. It was a distant relative, not a giant.1

給恐龍專家

學名: Calamosaurus
命名者: Lydekker 18913
類群: 暴龍類
科 / 演化支: Tyrannosauroidea3
分類: Theropoda > Tyrannosauroidea3
岩石的年代: 126 到 120 百萬年 (Barremian / Aptian)3
國家: 英國3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: The fossils were collected by Reverend William Fox on the Isle of Wight. Richard Lydekker named them Calamospondylus foxi in 1889, but later changed the name to Calamosaurus foxi in 1891 because the first name was already used.1
仍有爭議: Scientists are not sure whether Calamosaurus belongs to the tyrannosauroid group or the alvarezsauroid group. More fossils are needed to settle the debate.1