恐龍卡第 1888 張，共 2 027 張

Velocisaurus

名字的意思： “swift lizard”1

吃：肉肉食恐龍白堊紀晚期

Velocisaurus was a small, speedy dinosaur that lived in what is now Argentina. It was a meat-eater, but its feet were built for running fast, maybe even to escape larger predators.1 3

生存年代

86 到 84 百萬年前3

白堊紀晚期

化石發現地

Neuquén and Río Negro provinces, Patagonia, Argentina1 2

長度

1.5 m (4.9 ft)1

高度

0.52 m (1.7 ft)

估計值

最高速度

時速約 35 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

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能在 10 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Velocisaurus 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)

Velocisaurus 時速約 35 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

Velocisaurus had a very unusual foot. The middle toe bone (third metatarsal) was thick and carried most of the weight, while the two side toe bones (second and fourth) were thin like rods.1

This dinosaur was one of the smallest noasaurids, only about 1.5 meters (5 feet) long. That is as long as a large dog.1

Velocisaurus lived during the Santonian stage of the Late Cretaceous, about 85 to 83 million years ago.3 1

The first Velocisaurus fossil was just a right hind leg, found in 1985. In 2016, scientists described a second specimen that included a nearly complete left hind leg.1 2

Velocisaurus is a close relative of another weird dinosaur called Masiakasaurus, which had teeth that stuck out forward.1

This dinosaur was named by the famous paleontologist José Bonaparte in 1991. The name means 'swift lizard' because its leg and foot were built for running.1

Velocisaurus had a short, strong thigh bone (femur) that was bowed forward and had a triangular shape near the hip.2

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

?How big was Velocisaurus?

About 1.5 meters (4.9 feet) long, which is about as long as a large dog.1

?Why was Velocisaurus called 'swift lizard'?

Its leg and foot were built for running fast, so its name means 'swift lizard' in Latin.1

?When did Velocisaurus live?

It lived during the Santonian stage of the Late Cretaceous, about 85 to 83 million years ago.3

給恐龍專家

學名: Velocisaurus
命名者: Bonaparte 19913
類群: 肉食恐龍
科 / 演化支: Noasauridae3
分類: Theropoda > Ceratosauria3
岩石的年代: 86 到 84 百萬年 (Santonian)3
岩層: Bajo de la Carpa3
國家: 阿根廷3
化石紀錄: The Paleobiology Database 收錄 2 筆3
發現: In 1985, Oscar de Ferrariis and Zulma Brandoni de Gasparini found fossils at Boca del Sapo in Neuquén, Argentina. In 1991, José Bonaparte named the dinosaur Velocisaurus unicus.1
仍有爭議: Scientists are not sure whether Velocisaurus was a pure meat-eater or an omnivore that also ate plants. A claw from its fourth toe was not very sharp, which might hint it ate some plants.1