恐龍卡第 0513 張，共 2 027 張

Dilong

名字的意思： “emperor dragon”1

吃：肉暴龍類白堊紀早期

Dilong was a small, early relative of the mighty T. rex. It lived in China about 125 million years ago and had long arms with three-fingered hands. Some fossils even show that Dilong had fuzzy, feather-like coverings called protofeathers.2 1

生存年代

126 到 120 百萬年前6

白堊紀早期

化石發現地

Liaoning Province, China2 1

長度

1.6 m (5.2 ft)1

體重

6 kg 到 10 kg (13 到 22 lb)3 4

高度

0.64 m (2.1 ft)

估計值

最高速度

時速約 35 公里（22 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 2.5 隻家貓一樣重

跟 3 隻家貓從鼻子接到尾巴一樣長跟 9 根香蕉頭尾相接一樣長跟 83 根香蕉一樣重能在 10 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Dilong 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)

Dilong 時速約 35 公里 (22 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

Dilong is the earliest known undisputed tyrannosauroid dinosaur.2

Its fossils were found in the Yixian Formation, which is about 125 million years old.6 1

Dilong had a long, low skull and a less robust build compared to later tyrannosaurs.1

One specimen of Dilong preserves filamentous protofeathers on the tail and near the jaw, showing that early tyrannosaurs had fuzzy coverings.2 1

Dilong had relatively long arms with three-fingered hands, unlike the tiny arms of later tyrannosaurs like T. rex.2 1

Its hind legs were built for running, with a tibia longer than the femur.1

Dilong's name comes from the Chinese words for 'emperor' and 'dragon'.1

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

?How big was Dilong?

About 1.6 to 2 metres (5 to 6.5 feet) long and weighed around 5 to 10 kilograms (11 to 22 pounds). That is about the size of a large dog.4 5

?Did Dilong have feathers?

Yes. Some Dilong fossils show filamentous protofeathers, which are simple, fuzzy coverings. These were not for flying, but probably kept it warm.4 2

?What did Dilong eat?

Dilong was a meat-eater. It probably hunted small animals like lizards, mammals and birds, using its D-shaped front teeth and three-fingered hands to hold prey.4

?Was Dilong related to T. rex?

Yes, Dilong was an early, small relative of Tyrannosaurus rex. It belonged to the same group called tyrannosauroids, but lived about 125 million years earlier.4 5

?How fast could Dilong run?

Probably not very fast. Its legs were short for a tyrannosaur, which suggests it was not a speedy runner.4

?When did Dilong live?

Dilong lived during the Early Cretaceous Period, about 128 to 127 million years ago. Its fossils come from the Yixian Formation in Liaoning, China.5 4

給恐龍專家

學名: Dilong
命名者: Xu et al. 20046
類群: 暴龍類
科 / 演化支: Tyrannosauroidea6
分類: Theropoda > Tyrannosauroidea6
岩石的年代: 126 到 120 百萬年 (Barremian / Aptian)6
岩層: Yixian6
國家: 中國6
化石紀錄: The Paleobiology Database 收錄 2 筆6
發現: Dilong was named in 2004 by Xu Xing and colleagues based on fossils from the Yixian Formation in Liaoning, China. The holotype specimen is a semi-articulated skeleton with an almost complete skull.2 1
仍有爭議: Scientists debate whether some specimens referred to Dilong might actually belong to a second, closely related species.1