恐龍卡第 0925 張，共 2 027 張

Joaquinraptor

名字的意思： “Joaquin's thief”1

吃：肉肉食恐龍白堊紀晚期

Joaquinraptor was a meat-eating dinosaur with big claws on its hands. It lived in what is now Argentina near the very end of the age of dinosaurs. Scientists found its skeleton with a crocodile arm bone stuck between its jaws!1

生存年代

72 到 66 百萬年前8

白堊紀晚期

化石發現地

Chubut Province, central Patagonia, Argentina2 1

長度

7 m (23 ft)3

體重

680 kg 到 1.036 公噸 (1,500 到 2,300 lb)3 4 5

高度

2.2 m (7.2 ft)4

最高速度

時速約 38 公里（24 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 7 隻狗從鼻子接到尾巴一樣長跟 39 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 32 個小學生一樣重跟 2.5 隻北極熊一樣重能在 9.5 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Joaquinraptor 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)

Joaquinraptor 時速約 38 公里 (24 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

Joaquinraptor is a member of a group called Megaraptoridae, which are known for their large claws on the first and second fingers.1

The only known skeleton of Joaquinraptor includes parts of the skull, backbone, shoulder, arm, and leg bones.1

This dinosaur lived during the Maastrichtian stage, about 72 to 66 million years ago, right up to the time when the non-bird dinosaurs went extinct.2 1

Joaquinraptor was one of the last surviving megaraptorid dinosaurs, and it may have been the top predator in its ecosystem in central and southern Patagonia.1

The fossil of Joaquinraptor was found with a crocodile arm bone between its lower jaws, and some of its teeth touched that bone. This might mean it was eating a crocodile.1

Joaquinraptor was named in 2025 by a team of scientists led by Lucio M. Ibiricu. The name honors the first author's son Joaquin and the fossil site called Valle Joaquin.1

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

?How big was Joaquinraptor?

It was at least 7 metres (23 feet) long and weighed about 1,036 kilograms (2,284 pounds). That is about as long as a large pickup truck.3 6

?What did Joaquinraptor eat?

It was a meat-eater. Scientists found a crocodile arm bone stuck in its jaws, so it probably ate crocodile relatives.3 6 7

?When did Joaquinraptor live?

It lived about 67 million years ago, near the very end of the age of dinosaurs. It was one of the last megaraptorids.3 6

?Did Joaquinraptor have big claws?

Yes, it had large, curved claws on its hands, like other megaraptorids. Its arms were long and strong.3 7

?Where was Joaquinraptor found?

It was found in central Patagonia, Argentina, in the Lago Colhué Huapi Formation. The fossils were collected from 2019 to 2023.3 6

?Is Joaquinraptor a dinosaur?

Yes, it is a dinosaur. It is a theropod dinosaur from the group called Megaraptoridae.3

給恐龍專家

學名: Joaquinraptor
命名者: Ibiricu et al. 20258
類群: 肉食恐龍
科 / 演化支: Megaraptoridae8
分類: Theropoda > Megaraptora8
岩石的年代: 72 到 66 百萬年 (Maastrichtian)8
岩層: Lago Colhué Huapi8
國家: 阿根廷8
化石紀錄: The Paleobiology Database 收錄 1 筆8
發現: Joaquinraptor was named by Lucio M. Ibiricu and colleagues in 2025. The skeleton was found in the Lago Colhué Huapi Formation in Chubut, Argentina, at a site called Valle Joaquin.2 1
仍有爭議: Scientists are not sure if the crocodile arm bone found with Joaquinraptor shows that it ate crocodiles, or if it got there by accident, such as being moved by water.1