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Igishushanyo cya Limusaurus
Ikarita ya dinozore nimero 1059 muri 2 027

Limusaurus

Yaryaga: IbimeraDinozore zirya inyamaJurasike ya nyuma

Limusaurus was a small, beaked dinosaur that lived in what is now China about 155 million years ago. Unlike most meat-eating dinosaurs, it ate plants! Its strange hand helped scientists solve a puzzle about how bird wings evolved.1

Yabayeho
hashize imyaka miliyoni 162 kugeza 1557
Jurasike ya nyuma
Ibisigazwa byabonetse muri
Xinjiang, China, in the Shishugou Formation21
Uburebure
1,7 kugeza 1,955 m (5,6 kugeza 6,4 ft)34
Uburemere
15 kg (33 lb)3
Ubutumburuke
0,67 m (2,2 ft)
igereranya
Umuvuduko wo hejuru
nka 41 km/h (25 mph)
Kwiruka, igereranya

Yabayeho ryari?

Triyasike
Jurasike
Kiretase
Hashize miliyoni 252 z'imyaka20114566, asiteroyide

Yanganaga ite?

Yari ndende ite?

Limusaurus nka 1,955 m z'uburebure (6,4 ft)Imbwa nka 1 m (3,3 ft)Igare ry'umuntu mukuru nka 1,8 m (5,9 ft)Imodoka nka 4,5 m (15 ft)

Ubutumburuke bwayo bwanganaga iki?

Injangwe yo mu rugonka 0,3 m (1 ft)Imbwanka 0,5 m (1,6 ft)Limusaurusnka 0,67 m z'ubutumburuke (2,2 ft)Ifarashinka 1,6 m (5,2 ft)

igereranya

Yari iremereye ite?

iremereye nk'injangwe 4 zo mu rugo
ndende nk'injangwe 4 zo mu rugo zikurikiranyendende nk'imineke 11 ikurikiranyeiremereye nk'imineke 120yashoboraga kwiruka metero 100 mu masegonda 8,8 (umuntu wihuta kurusha abandi akenera 9,6)

Limusaurus yanganaga ite ugereranyije NAWE?

Ni imibare gusa ibarirwa muri mushakisha yawe. Nta kintu kibikwa cyangwa cyoherezwa ahandi.

Yihutaga ite?

utuntu twiza cyane

Utuntu dushimishije

1

Limusaurus was a ceratosaur, the first one ever found in Asia.1

2

It had a very small thumb, or first digit, while the other two fingers were normal. This is a rare condition in dinosaurs.1

3

Its hand showed a mix of features: the wrist bones were like the second, third and fourth digits, but the finger bones were like the first, second and third.1

4

Limusaurus lived during the Oxfordian stage, about 161 to 155 million years ago.2

5

It is the only Jurassic theropod known to have a beak and a plant-based diet.1

6

The discovery of Limusaurus helped scientists understand how the three-fingered hand of theropods could turn into the two-fingered hand of birds.1

Byakozwe na AIIshusho ya Limusaurus yakozwe na AI
Ishusho yakozwe na AI yerekana uko Limusaurus ishobora kuba yari isa, yakozwe na mudasobwa hashingiwe ku byo abahanga bazi. Ni ugukeka gusa: inyamaswa nyayo ishobora kuba yari isa ukundi, kandi nta muntu uzi amabara yayo nyayo.
wabajije

Ibibazo bibazwa cyane kuri Limusaurus

?What did Limusaurus eat?

It ate plants. Adults had a beak and no teeth, and they also had gastroliths (stomach stones) to help grind up plant food. Juveniles had teeth, so they may have eaten a mix of plants and small animals.5

?How big was Limusaurus?

About 1.7 metres long and weighed around 15 kilograms. That is about as long as a small car is tall, but much lighter.5

?Did Limusaurus have feathers?

Nobody knows for sure. It may have had feathers, but no direct evidence of feathers has been found on its fossils.5

?Why is Limusaurus important?

Its strange hand helped scientists solve a puzzle about how bird wings evolved. It showed a mix of wrist and finger features that explain how the three-fingered hand of theropods turned into the bird wing.16

?Is Limusaurus a dinosaur?

Yes, it is a dinosaur. It is a theropod dinosaur, which is the same group that includes birds.5

?When did Limusaurus live?

It lived during the Late Jurassic period, about 161 to 155 million years ago.5

Gusenya ibinyoma

Ibivugwa: Because it is a theropod, Limusaurus must have been a meat-eater.

Ukuri: Limusaurus was actually a plant-eater, with a beak and no sharp teeth for hunting. It is one of the few herbivorous theropods known.1

Ku bazobereye muri dinozore

Izina rya siyansi
Limusaurus
Yiswe na
Xu et al. 20097
Itsinda
Dinozore zirya inyama
Umuryango / ishami
Noasauridae7
Ishyirwa mu byiciro
Theropoda > Ceratosauria7
Imyaka y'amabuye
imyaka miliyoni 162 kugeza 155 (Oxfordian)7
Inzego z'amabuye
Shishugou7
Ibihugu
Ubushinwa7
Ibisigazwa byanditswe
3 muri The Paleobiology Database7
Ivumburwa
Limusaurus was named and described in 2009 by a team led by paleontologist Xing Xu. Fossils were found in the Junggar Basin of western China.12
Biracyagibwaho impaka
Scientists still debate exactly which digits of the hand were lost during theropod evolution, and Limusaurus shows a confusing mix of features that makes this question tricky.1

Aho amakuru yakuwe

  1. A Jurassic ceratosaur from China helps clarify avian digital homologies | Nature (nature.com)
  2. PBDB Taxon (paleobiodb.org)
  3. Limusaurus (en.wikipedia.org)
  4. A Jurassic ceratosaurian theropod with implications for homologies in the avian hand (ivpp.cas.cn)
  5. Limusaurus (Wikipedia) (Wikipedia)
  6. Beaked, Bird-like Dinosaur Tells Story of Finger Evolution | NSF - National Science Foundation (nsf.gov)
  7. Limusaurus in The Paleobiology Database (CC BY 4.0): imyaka, ahantu, inzego z'amabuye, ishyirwa mu byiciro.

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