恐龍卡第 0504 張，共 2 027 張

Deltadromeus

名字的意思： “change runner”1

吃：肉肉食恐龍白堊紀晚期

Deltadromeus was a fast, meat-eating dinosaur with long, slender legs. It lived in North Africa during the Cretaceous period, around 95 million years ago. Its delicate limbs made it one of the speediest dinosaurs of its time.2 1

生存年代

100 到 94 百萬年前4

白堊紀晚期

化石發現地

Morocco (Kem Kem Beds), and possibly Egypt (Bahariya Formation)1

長度

8 到 12.2 m (26 到 40 ft)1

體重

1.05 公噸 (2,300 lb)1

高度

2.44 m (8 ft)2

最高速度

時速約 36 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？

牠有多重？

跟 52 隻狗一樣重

跟 2.5 台汽車排成一排一樣長跟 68 根香蕉頭尾相接一樣長跟 210 顆西瓜一樣重跟 55 個幼兒園小朋友一樣重跟 33 個小學生一樣重跟 2.5 隻北極熊一樣重能在 10 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Deltadromeus 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)

Deltadromeus 時速約 36 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

Deltadromeus had extraordinarily long and delicate limbs, making it one of the fastest dinosaurs to have existed.2

Its tail vertebrae had broad, quadrangular neural spines with cavities that stored air sacs, like in modern birds.1

The only definite skeleton of Deltadromeus was found with its bones still in place (articulated), which is rare for the Kem Kem Beds.1

If fossils from Egypt belong to Deltadromeus, it would have been as long as Tyrannosaurus rex, about 12.2 metres (40 feet).1

Deltadromeus lived alongside giant predators like Spinosaurus and Carcharodontosaurus in a mangrove-filled coastal region.1

Its forelimbs were proportionately longer than those of Allosaurus, another large theropod.1

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

?How big was Deltadromeus?

About 8 metres (26 ft) long and 1,050 kilograms (2,310 lb) based on the only definite skeleton. If some Egyptian fossils belong to it, it could have grown to about 12.2 metres (40 ft), which is shorter than a Tyrannosaurus rex.1

?What did Deltadromeus eat?

It was a meat-eating dinosaur, so it likely ate other animals. Some scientists think it might have been plant-eating or omnivorous if it was closely related to certain ceratosaurs, but that is not certain.1 3

?When did Deltadromeus live?

It lived during the mid-Cretaceous period, about 100 to 95 million years ago, in what is now Morocco and possibly Egypt.1 3

?Was Deltadromeus a dinosaur?

Yes, Deltadromeus was a theropod dinosaur, a meat-eating group that includes T. rex and birds.1 3

?How fast could Deltadromeus run?

Scientists think it was very fast because it had long, slender legs, similar to other fast-running dinosaurs. Its lower leg was 7.5% longer than average for a theropod its size, which helps with speed.1

?Where was Deltadromeus found?

The only definite skeleton was found in Morocco, in the Kem Kem Beds. Some fossils from Egypt might also belong to Deltadromeus, but that is debated.1 3

迷思破解王

迷思： Deltadromeus is the same dinosaur as Bahariasaurus.

真相： Scientists disagree. Some think they are different genera, while others suggest the Egyptian Bahariasaurus fossils might belong to Deltadromeus. The debate continues because many original fossils were destroyed in World War II.1

給恐龍專家

學名: Deltadromeus
命名者: Sereno et al. 19964
類群: 肉食恐龍
科 / 演化支: Noasauridae4
分類: Theropoda > Ceratosauria4
岩石的年代: 100 到 94 百萬年 (Cenomanian)4
岩層: Baharîje, Gara Sbaa4
國家: 埃及, 摩洛哥, 阿爾及利亞4
化石紀錄: The Paleobiology Database 收錄 6 筆4
發現: Deltadromeus was discovered in 1995 by Gabrielle Lyon during a joint expedition by the University of Chicago and the Service Géologique du Maroc. It was named and described by Paul Sereno and colleagues in 1996 based on a partial skeleton from Morocco.2 1
仍有爭議: Scientists still debate whether Deltadromeus belongs to the abelisauroid group or another branch of theropods, and whether some Egyptian fossils really belong to this genus.1