恐龍卡第 0546 張，共 2 027 張

Dryptosaurus

名字的意思： “tearing lizard”1

吃：肉暴龍類白堊紀早期到白堊紀晚期

Dryptosaurus was a fierce meat-eating dinosaur that lived on the East Coast of the United States. It had strong arms with big claws and sharp, blade-like teeth. It was an early cousin of the famous Tyrannosaurus rex.1

生存年代

113 到 66 百萬年前5

白堊紀早期到白堊紀晚期

化石發現地

New Jersey, USA, and possibly North Carolina and Wyoming, USA1 3

長度

6.4 到 7.5 m (21 到 25 ft)2 1

體重

756 kg 到 1.5 公噸 (1,700 到 3,300 lb)1

高度

2.5 m (8.2 ft)

估計值

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？

估計值

牠有多重？

跟 1 台汽車一樣重

跟 8 隻狗從鼻子接到尾巴一樣長跟 42 根香蕉頭尾相接一樣長跟 75 隻狗一樣重跟 300 顆西瓜一樣重跟 79 個幼兒園小朋友一樣重跟 47 個小學生一樣重跟 3 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）

Dryptosaurus 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)

Dryptosaurus 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

Dryptosaurus had long arms with big claws, unlike later tyrannosaurs like T. rex which had tiny arms.1

Its teeth were ziphodont, meaning they were sharp, blade-like, and flattened from side to side, different from the thick teeth of larger tyrannosaurs.1

Dryptosaurus lived on the East Coast of the United States, which was part of an island continent called Appalachia during the Late Cretaceous.1

The first Dryptosaurus skeleton was found by fertilizer miners in New Jersey, and it was one of the first nearly complete theropod skeletons discovered in North America.1

Dryptosaurus fossils were found in a marine formation, meaning the dinosaur's body floated out to sea and sank to the ocean floor before becoming fossilized.1

Scientists think Dryptosaurus was an intermediate tyrannosaur, more lightly built than later giants like T. rex but more advanced than early small tyrannosaurs.1

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

?How big was Dryptosaurus?

Dryptosaurus was about 7.5 metres (25 ft) long and weighed between 756 and 1,500 kilograms (1,667 to 3,307 lb). These are estimates based on a single partial skeleton.1

?Was Dryptosaurus bigger than T. rex?

No, Dryptosaurus was much smaller than T. rex. T. rex could be over 12 metres long, while Dryptosaurus was only about 7.5 metres long.1

?What did Dryptosaurus eat?

Dryptosaurus was a carnivore, meaning it ate meat. It likely hunted other animals and may have used its arms and jaws as weapons to catch prey.1 4

?Did Dryptosaurus have feathers?

No one knows for sure. The fossils don't show feathers, and scientists haven't found any evidence of them on Dryptosaurus.1

?When did Dryptosaurus live?

Dryptosaurus lived during the Late Cretaceous period, about 67 to 66 million years ago. That's just before the dinosaurs went extinct.1 2

?Where was Dryptosaurus found?

Dryptosaurus fossils were found in New Jersey, USA. They were discovered by fertilizer miners in a quarry near Barnsboro.1 4

?Why did Dryptosaurus have big claws?

Scientists think Dryptosaurus used its big claws and strong arms as weapons to catch and hold onto prey. Its claws were about 20 centimetres (8 inches) long.1

?Is Dryptosaurus a dinosaur?

Yes, Dryptosaurus is a dinosaur. It was a theropod, a group of meat-eating dinosaurs that walked on two legs.1

迷思破解王

迷思： Some people think Dryptosaurus was a type of bird because its name sounds similar to 'dromaeosaur'.

真相： Dryptosaurus was a theropod dinosaur, closely related to Tyrannosaurus rex, not a bird. It belonged to the group Tyrannosauroidea.1

給恐龍專家

學名: Dryptosaurus
命名者: Marsh 18775
類群: 暴龍類
科 / 演化支: Tyrannosauroidea5
分類: Theropoda > Tyrannosauroidea5
岩石的年代: 113 到 66 百萬年 (Albian / Maastrichtian)5
岩層: Lance, Marshalltown, New Egypt5
國家: 美國5
化石紀錄: The Paleobiology Database 收錄 13 筆5
又名: Laelaps （舊名稱現在也算作同一種動物）5
發現: The first Dryptosaurus fossils were found in 1866 by workers at a marl pit in New Jersey. Edward Drinker Cope described them as Laelaps aquilunguis, but later Othniel Marsh renamed the dinosaur Dryptosaurus in 1877.1 2
仍有爭議: Scientists are not sure about the exact size of Dryptosaurus, with estimates ranging from 6.4 to 7.5 metres long. They also debate whether some fragmentary fossils from other states belong to Dryptosaurus.1 2