恐龍卡第 1271 張，共 2 027 張

Niebla

名字的意思： “mist, from the Spanish word for fog”1

吃：肉肉食恐龍白堊紀晚期

Niebla was a medium-sized meat-eating dinosaur that lived in what is now Argentina. It was about the length of a small car and hunted other animals during the Late Cretaceous period.1

生存年代

72 到 66 百萬年前3

白堊紀晚期

化石發現地

Río Negro province, northern Patagonia, Argentina1 2

長度

4 到 4.5 m (13 到 15 ft)1

體重

500 kg 到 700 kg (1,100 到 1,500 lb)2

高度

1.5 到 1.8 m (4.9 到 5.9 ft)2

最高速度

時速約 41 公里（25 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 35 隻狗一樣重

跟 4 隻狗從鼻子接到尾巴一樣長跟 25 根香蕉頭尾相接一樣長跟 140 顆西瓜一樣重跟 37 個幼兒園小朋友一樣重跟 22 個小學生一樣重能在 8.8 秒內跑完 100 公尺（最快的人類要 9.6 秒）

Niebla 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)

Niebla 時速約 41 公里 (25 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

Niebla is one of the smallest abelisaurids known, even though the only fossil found was from an adult that was at least nine years old.1 2

Its name comes from the Spanish word for 'mist' because the scientists who dug it up worked on foggy days.1

Niebla had a shoulder blade very similar to Carnotaurus, another abelisaurid, with a narrow and straight blade.1

The only known Niebla fossil includes a nearly complete braincase, part of the jaw, teeth, and shoulder bones.1

Niebla lived alongside many other dinosaurs, such as the sauropod Rocasaurus and the ankylosaur Patagopelta.1

Scientists think Niebla was one of the most advanced or 'derived' abelisaurids, meaning it evolved later in the group's history.1

Niebla 的 AI 繪圖 — 這是電腦根據科學家目前的知識，用 AI 畫出 Niebla 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。

給恐龍專家

學名: Niebla
命名者: Aranciaga Rolando et al. 20213
類群: 肉食恐龍
科 / 演化支: Abelisauridae3
分類: Theropoda > Ceratosauria > Abelisauridae3
岩石的年代: 72 到 66 百萬年 (Maastrichtian)3
岩層: Allen3
國家: 阿根廷3
化石紀錄: The Paleobiology Database 收錄 1 筆3
發現: Niebla was named in 2021 by a team of scientists led by Mauro Aranciaga Rolando. The only fossil was found at Matadero Hill, 70 km south of General Roca in Argentina.1 2
仍有爭議: Scientists are not sure exactly how big Niebla was because only a partial skeleton has been found. The length estimate of 4 to 4.5 metres is based on comparisons with related dinosaurs.1