恐龍卡第 0764 張，共 2 027 張

Guemesia

名字的意思： “named after Martín Miguel de Güemes, an Argentine independence hero”1

吃：肉肉食恐龍白堊紀晚期

Guemesia was a small, meat-eating dinosaur that lived in what is now Argentina. It is one of the smallest abelisaurids ever found, about the size of a large dog. Its nearly complete braincase helped scientists learn a lot about this little predator.1 2

生存年代

84 到 66 百萬年前4

白堊紀晚期

化石發現地

Amblayo Valley, Salta Province, Argentina (Los Blanquitos Formation)1 4

最高速度

時速約 47 公里（29 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)

Guemesia 時速約 47 公里 (29 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

Guemesia is known from only a single, nearly complete braincase, which is very rare for abelisaurids.1 2

It is one of the smallest abelisaurids ever discovered, much smaller than relatives like Carnotaurus.1 2

Unlike many other abelisaurids, Guemesia had no horns or bumps on its skull.2

Its skull roof was thin, and its parietal eminence was low and narrow, at the same level as the sagittal crest.2

Guemesia lived during the Late Cretaceous period, about 72 million years ago.1

It is the first definitive abelisaurid dinosaur found in northwestern Argentina.2

Guemesia belongs to the group Brachyrostra, which includes many other South American abelisaurids.1

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

?How big was Guemesia?

About the size of a large dog, making it one of the smallest abelisaurids known.1 3

?Did Guemesia have horns?

No. Unlike many other abelisaurids, Guemesia had no horns or bumps on its skull.1 2

?What did Guemesia eat?

It was a meat-eater, likely feeding on large dinosaurs like titanosaurs, using its powerful head and jaws instead of its tiny arms.3

?When did Guemesia live?

It lived during the Late Cretaceous period, about 72 million years ago, just before the dinosaurs went extinct.1 3

給恐龍專家

學名: Guemesia
命名者: Agnolín et al. 20214
類群: 肉食恐龍
科 / 演化支: Abelisauridae4
分類: Theropoda > Ceratosauria > Abelisauridae4
岩石的年代: 84 到 66 百萬年 (Campanian / Maastrichtian)4
岩層: Los Blanquitos4
國家: 阿根廷4
化石紀錄: The Paleobiology Database 收錄 1 筆4
發現: Guemesia was named in 2022 by paleontologist Federico Agnolín and colleagues. The fossil, a nearly complete braincase, was found in the Los Blanquitos Formation in Salta Province, Argentina.1 2
仍有爭議: Scientists are not sure exactly how big Guemesia was, because only its braincase has been found. Its small size might mean it was a juvenile or a particularly small species.1 2