恐龍卡第 0800 張，共 2 027 張

Hesperonyx

名字的意思： “western claw”1

吃：植物有喙的草食恐龍侏羅紀晚期

Hesperonyx was a small, plant-eating dinosaur that lived in what is now Portugal during the Late Jurassic. It walked on two legs and used its beak to nibble on plants. Scientists know it from just a few leg and hand bones found on a beach.1 2

生存年代

152 到 149 百萬年前4

侏羅紀晚期

化石發現地

Porto Dinheiro Beach, Lourinhã, Portugal1 2

長度

3 到 4 m (9.8 到 13 ft)2

高度

1.2 m (3.9 ft)

估計值

最高速度

時速約 43 公里（27 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 22 根香蕉頭尾相接一樣長能在 8.4 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Hesperonyx 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)

Hesperonyx 時速約 43 公里 (27 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

Hesperonyx lived about 152 to 149 million years ago, during the Kimmeridgian stage of the Late Jurassic.3

Its name means 'western claw' because it was found in the western region of Portugal and its fossils include a claw.1

The only known skeleton, called ML 2700, includes bones from the left forelimb and hindlimb, such as a hand claw, shin bone, and foot bones.1

Hesperonyx was a dryomorphan, a group of plant-eating dinosaurs that are close relatives of the larger iguanodonts.3

The fossils were found in 2021 during a joint field season by FCT NOVA and Museu da Lourinhã.2

It lived in a warm, seasonal climate with rivers and floodplains, alongside other dinosaurs like Draconyx and Eousdryosaurus.2

Hesperonyx had a reduced first toe (metatarsal I), which is unusual and helps scientists tell it apart from other dinosaurs.2

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

?How big was Hesperonyx?

About 3 to 4 metres (9.8 to 13.1 feet) long, which is roughly the size of a small car.1 2

?What did Hesperonyx eat?

It was a plant-eater (herbivore) that used its beak to nibble on plants.4

?When did Hesperonyx live?

It lived about 152 to 149 million years ago, during the Kimmeridgian stage of the Late Jurassic.1 2

?Is Hesperonyx a dinosaur?

Yes, it is a dryomorphan ornithopod dinosaur, a type of plant-eating dinosaur that walked on two legs.1 4

給恐龍專家

學名: Hesperonyx
命名者: Rotatori et al. 20244
類群: 有喙的草食恐龍
科 / 演化支: Dryomorpha4
分類: Ornithischia > Ornithopoda > Iguanodontia4
岩石的年代: 152 到 149 百萬年 (Kimmeridgian)4
岩層: Lourinhã4
國家: 葡萄牙4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Hesperonyx was named in 2024 by Rotatori and colleagues. The fossils were found in 2021 on Porto Dinheiro Beach in Portugal by a team from FCT NOVA and Museu da Lourinhã.1 2
仍有爭議: Scientists are not sure exactly where Hesperonyx fits in the dinosaur family tree. It is definitely a dryomorphan, but its exact relationships are still debated.2