Macrocollum

Нэрний утга: “long neck”1

Иддэг байсан: УргамалУрт хүзүүтнүүдХожуу Триас

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

Амьдарч байсан

227 - 206 сая жилийн өмнө6

Хожуу Триас

Чулуужсан олдвор олдсон газар

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

Дээд хурд

ойролцоогоор 38 км/ц (24 миль/ц)

Гүйх, тооцоолол

Хэзээ амьдарч байсан бэ?

Триасын галав

Юрийн галав

Цэрдийн галав

252 сая жилийн өмнө20114566, астероид

Хэр хурдан байсан бэ?

Алхаж буй хүн ойролцоогоор 5 км/ц (3 mph)

Дугуй унаж буй хүүхэд ойролцоогоор 12 км/ц (7 mph)

Macrocollum ойролцоогоор 38 км/ц (24 mph)

Давхиж буй морь ойролцоогоор 65 км/ц (40 mph)

Гепард ойролцоогоор 100 км/ц (62 mph)

гоё зүйлс

Сонирхолтой баримтууд

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

Macrocollum: хиймэл оюуны зурсан зураг — Macrocollum ямар харагдаж байсныг эрдэмтдийн мэддэг зүйл дээр үндэслэн компьютер хиймэл оюунаар зурсан зураг. Энэ бол таамаг: жинхэнэ амьтан өөр харагдаж байсан байж магадгүй, түүний жинхэнэ өнгийг хэн ч мэдэхгүй.

чи асуусан

Macrocollum: хамгийн их асуудаг асуултууд

?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

Үлэг гүрвэлийн мэргэжилтнүүдэд

Шинжлэх ухааны нэр: Macrocollum
Нэр өгсөн: Müller et al. 20186
Бүлэг: Урт хүзүүтнүүд
Овог / клад: Unaysauridae6
Ангилал: Sauropodomorpha6
Чулуулгийн нас: 227 / 206 сая жил (Norian)6
Чулуулгийн формацууд: Caturrita6
Улсууд: Бразил6
Чулуужсан олдворын бүртгэл: The Paleobiology Database дээр 26
Нээлт: 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
Маргаантай хэвээр: 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

Баримтууд хаанаас ирдэг вэ

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): нас, газар, чулуулгийн формац, ангилал.

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