Guemesia

O nome significa: “named after Martín Miguel de Güemes, an Argentine independence hero”1

Comía: CarneDinos carnívorosCretáceo Superior

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

Viviu

hai entre 84 e 66 millóns de anos4

Cretáceo Superior

Fósiles atopados en

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

Velocidade máxima

uns 47 km/h (29 mph)

Correr, estimación

Cando viviu?

Triásico

Xurásico

Cretáceo

Hai 252 millóns de anos20114566, o asteroide

Que velocidade alcanzaba?

Unha persoa camiñando uns 5 km/h (3 mph)

Un neno en bici uns 12 km/h (7 mph)

Guemesia uns 47 km/h (29 mph)

Un cabalo ao galope uns 65 km/h (40 mph)

Un guepardo uns 100 km/h (62 mph)

cousas xeniais

Datos curiosos

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

Imaxe de Guemesia feita con IA — Unha imaxe feita con IA de como podería ser Guemesia, creada por un ordenador a partir do que saben os científicos. É unha suposición: o animal real podía ser diferente, e ninguén sabe as súas cores de verdade.

ti preguntaches

As preguntas máis frecuentes sobre Guemesia

?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

Para expertos en dinos

Nome científico: Guemesia
Bautizado por: Agnolín et al. 20214
Grupo: Dinos carnívoros
Familia / clado: Abelisauridae4
Clasificación: Theropoda > Ceratosauria > Abelisauridae4
Idade das rochas: de 84 a 66 millóns de anos (Campanian / Maastrichtian)4
Formacións rochosas: Los Blanquitos4
Países: Arxentina4
Rexistros fósiles: 1 na Paleobiology Database4
Descubrimento: 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
Aínda en debate: 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

De onde veñen os datos

Guemesia (en.wikipedia.org)
First definitive abelisaurid theropod from the Late Cretaceous of Northwestern Argentina: Journal of Vertebrate Paleontology: Vol 41 , No 4 - Get Access (tandfonline.com)
New armless abelisaur dinosaur species discovered in Argentina | Natural History Museum (nhm.ac.uk)
Guemesia in The Paleobiology Database (CC BY 4.0): idade, lugares, formacións rochosas, clasificación.

Cada dato desta páxina ten un número que leva á súa fonte. Se nos equivocamos nalgo, sentímolo, somos fans dos dinos, non unha revista científica. Escríbenos a [email protected] e arranxámolo.

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