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Umfanekiso wekhathuni: Limusaurus
Ikhadi ledayinaso No. 1059 kwe-2 027

Limusaurus

Yayitya: IzityaloIidayinaso ezitya inyamaiJurassic yamva

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

Yaphila
162 ukuya ku-155 izigidi zeminyaka eyadlulayo7
iJurassic yamva
Iifosili zifunyenwe:
Xinjiang, China, in the Shishugou Formation21
Ubude
1.7 ukuya ku-1.955 m (5.6 ukuya ku-6.4 ft)34
Ubunzima
15 kg (33 lb)3
Ukuphakama
0.67 m (2.2 ft)
uqikelelo
Esona santya siphezulu
malunga ne-41 km/h (25 mph)
Ukubaleka, uqikelelo

Yaphila nini?

iTriassic
iJurassic
iCretaceous
Izigidi ezingama-252 zeminyaka eyadlulayo20114566, i-asteroyidi

Yayinkulu kangakanani?

Yayinde kangakanani?

Limusaurus malunga ne-1.955 m ubude (6.4 ft)Inja malunga ne-1 m (3.3 ft)Ibhayisikile yomntu omdala malunga ne-1.8 m (5.9 ft)Imoto malunga ne-4.5 m (15 ft)

Yayiphakame kangakanani?

Ikati yasekhayamalunga ne-0.3 m (1 ft)Injamalunga ne-0.5 m (1.6 ft)Limusaurusmalunga ne-0.67 m ukuphakama (2.2 ft)Ihashemalunga ne-1.6 m (5.2 ft)

uqikelelo

Yayinzima kangakanani?

inzima njengeekati zasekhaya ezingama-4
inde njengeekati zasekhaya ezingama-4, impumlo ukuya emsileniinde njengeebhanana ezingama-11 zilandelelanainzima njengeebhanana ezingama-120ibinokubaleka iimitha ezili-100 ngemizuzwana engama-8.8 (oyena mntu ukhawulezayo udinga i-9,6)

Limusaurus wayemkhulu kangakanani xa ethelekiswa NAWE?

Yimathematika nje kwibhrawuza yakho. Akukho nto igcinwayo okanye ithunyelwe naphi na.

Yayikhawuleza kangakanani?

izinto ezimnandi

Iinyani ezimnandi

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

Yenziwe yi-AIUmfanekiso owenziwe yi-AI: Limusaurus
Umfanekiso owenziwe yi-AI obonisa indlela Limusaurus esenokuba wayekhangeleka ngayo, wenziwe yikhompyutha ngokwento eyaziwa zizazinzulu. Kukuqikelela nje: esona silwanyana sinokuba sasikhangeleka ngenye indlela, kwaye akukho mntu waziyo imibala yaso yokwenyani.
ubuzile

Eyona mibuzo ibuzwa kakhulu: 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

Inyaniso ngeentsomi

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

Inyaniso: 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

Kwiingcali zeedayinaso

Igama lenzululwazi
Limusaurus
Inikwe igama ngu:
Xu et al. 20097
Iqela
Iidayinaso ezitya inyama
Usapho / iclade
Noasauridae7
Ukuhlelwa
Theropoda > Ceratosauria7
Ubudala bamatye
162 ukuya ku-155 izigidi zeminyaka (Oxfordian)7
Izakhiwo zamatye
Shishugou7
Amazwe
iTshayina7
Iirekhodi zeefosili
3 kwi-Paleobiology Database7
Ukufunyanwa
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
Kusaxoxwa ngayo
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

Apho iinyani zivela khona

  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): ubudala, iindawo, izakhiwo zamatye, ukuhlelwa.

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