Macrocollum

O nome significa: “long neck”1

Comía: PlantasPescozos longosTriásico Superior

Macrocollum was an early long-necked dinosaur that lived about 225 million years ago in what is now Brazil. It was one of the first dinosaurs to have a really long neck, which helped it reach high plants to eat. Scientists found several complete skeletons together, showing that these dinosaurs may have lived in groups.1 2

Viviu

hai entre 227 e 206 millóns de anos6

Triásico Superior

Fósiles atopados en

Wachholz site, Agudo, Rio Grande do Sul, Brazil1 2

Velocidade máxima

uns 38 km/h (24 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)

Macrocollum uns 38 km/h (24 mph)

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

Un guepardo uns 100 km/h (62 mph)

cousas xeniais

Datos curiosos

Macrocollum is the oldest-known sauropodomorph with an elongated neck, which was twice as long as that of earlier relatives like Buriolestes.1 2

Its femur (thigh bone) was longer than its shin bone, a change from earlier dinosaurs that had longer shins for running.1 2

Macrocollum had a relatively small skull, only about 45% of its femur length, compared to 85% in the earlier Buriolestes.1 2

The fossils of Macrocollum were found clustered together, which is the oldest evidence of group living among sauropodomorph dinosaurs.1 2

Macrocollum lived during the early Norian stage of the Late Triassic, about 225 million years ago.1 2

Its name means 'long neck' in Greek and Latin, referring to its most distinctive feature.1

Macrocollum belonged to a group called Unaysauridae, which includes only dinosaurs from the southern supercontinent Gondwana.6 1

Imaxe de Macrocollum feita con IA — Unha imaxe feita con IA de como podería ser Macrocollum, 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 Macrocollum

?How big was Macrocollum?

Macrocollum was relatively small, with a femur (thigh bone) over 335 mm long. It walked on two legs and was about the size of a large dog.3 4

?What did Macrocollum eat?

Macrocollum was an omnivore or herbivore, eating plants and maybe small animals. Its teeth had coarse serrations and expanded crowns, perfect for chewing vegetation.3 5

?Did Macrocollum live in groups?

Yes, scientists found three complete Macrocollum skeletons together, which is the oldest evidence of group living among long-necked dinosaurs. They may have traveled in herds.3 4

?When did Macrocollum live?

Macrocollum lived about 225 million years ago, during the Norian age of the Late Triassic period. That's fewer than 10 million years after the earliest dinosaurs appeared.4 3

Para expertos en dinos

Nome científico: Macrocollum
Bautizado por: Müller et al. 20186
Grupo: Pescozos longos
Familia / clado: Unaysauridae6
Clasificación: Sauropodomorpha6
Idade das rochas: de 227 a 206 millóns de anos (Norian)6
Formacións rochosas: Caturrita6
Países: Brasil6
Rexistros fósiles: 2 na Paleobiology Database6
Descubrimento: Macrocollum was named in 2018 by Rodrigo T. Müller, Max C. Langer, and Sérgio Dias-da-Silva. The species name itaquii honors José Jerundino Machado Itaqui, who helped create the paleontology center where the fossils are kept.1 2
Aínda en debate: Scientists are still debating exactly how Macrocollum and its relatives are related to other early sauropodomorphs, and whether its long neck evolved primarily for reaching high plants or for other reasons.1 2

De onde veñen os datos

An exceptionally preserved association of complete dinosaur skeletons reveals the oldest long-necked sauropodomorphs (pmc.ncbi.nlm.nih.gov)
royalsocietypublishing.org (royalsocietypublishing.org)
An exceptionally preserved association of complete dinosaur skeletons reveals the oldest long-necked sauropodomorphs (royalsocietypublishing.org)
Macrocollum (en.wikipedia.org)
An exceptionally preserved association of complete dinosaur skeletons reveals the oldest long-necked sauropodomorphs (pubmed.ncbi.nlm.nih.gov)
Macrocollum in The Paleobiology Database (CC BY 4.0): idade, lugares, formacións rochosas, clasificación.

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