恐龍卡第 1892 張，共 2 027 張

Vespersaurus

名字的意思： “western lizard”1

吃：肉肉食恐龍白堊紀早期到白堊紀晚期

Vespersaurus was a small, meat-eating dinosaur that lived in a huge desert in what is now Brazil. It had a very unusual foot with one big toe that did most of the walking, like a one-toed dinosaur!1 2

生存年代

121 到 72 百萬年前4

白堊紀早期到白堊紀晚期

化石發現地

Cruzeiro do Oeste, Paraná state, Brazil1 2

長度

1 到 1.5 m (3.3 到 4.9 ft)1

體重

11.28 kg (25 lb)1

高度

0.52 m (1.7 ft)

估計值

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？

估計值

牠有多重？

跟 3 隻家貓一樣重

跟 3 隻家貓從鼻子接到尾巴一樣長跟 8 根香蕉頭尾相接一樣長跟 94 根香蕉一樣重能在 9.5 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Vespersaurus 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)

Vespersaurus 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

Vespersaurus had a foot that worked like it had only one big toe, with the other toes held off the ground. This is very rare among dinosaurs.2 1

Its fossils were found in rocks that were once part of a giant desert called the Botucatu Desert.1

Scientists used computer models to test Vespersaurus's teeth and claws. They found its teeth were not good for fighting big prey, so it probably ate small animals or dead bodies.1

Vespersaurus was about the size of a large dog, only 1 to 1.5 metres long.1

Footprints that look like they were made by a one-toed dinosaur were found in the same area, and scientists think Vespersaurus or a close relative made them.1

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

?How big was Vespersaurus?

About 1 to 1.5 metres long (3.3 to 4.9 feet) and stood roughly 0.8 metres (2.6 feet) tall. It weighed around 11.3 kilograms (24.9 pounds), similar to a large dog.1 3

?What did Vespersaurus eat?

It was a meat-eater, but its teeth were not good for fighting big prey. Scientists think it ate small animals like lizards and pterosaurs, or maybe scavenged dead bodies.1 3

?Why did Vespersaurus walk on one toe?

Its foot had a big middle toe that carried all its weight, with the other two toes held up off the ground. This rare one-toed walk may have helped it run fast or move easily across the desert sand.1 3

?When did Vespersaurus live?

During the Late Cretaceous Period, about 90 million years ago. It lived in a huge desert that covered what is now southern Brazil.1 3

給恐龍專家

學名: Vespersaurus
命名者: Langer et al. 20194
類群: 肉食恐龍
科 / 演化支: Noasauridae4
分類: Theropoda > Ceratosauria4
岩石的年代: 121 到 72 百萬年 (Aptian / Campanian)4
岩層: Goio-Erê4
國家: 巴西4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Vespersaurus was named in 2019 by Max Cardoso Langer and his team. Its bones were found between 2011 and 2015 at a site called Cemitério dos Pterossauros in Brazil.1 2
仍有爭議: Scientists are not sure if the one-toed footprints found nearby were really made by Vespersaurus or by a different dinosaur.1