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Ikhadi ledayinaso No. 1191 kwe-2 027

Mirarce

Igama lithetha: “wonderful winged messenger”1

Yayitya: InyamaIintaka zokuqalaiCretaceous yamva

Mirarce was a bird that lived about 76 million years ago. It was about the size of a turkey vulture and had strong wings and sharp talons for catching prey.1

Yaphila

84 ukuya ku-72 izigidi zeminyaka eyadlulayo4

iCretaceous yamva

Iifosili zifunyenwe:

Kaiparowits Formation, Utah, USA4 1

Ubunzima

0.45 kg (1 lb)3

Ukuphakama

0.6 m (2 ft)1

Esona santya siphezulu

malunga ne-31 km/h (19 mph)

Ukubhabha, uqikelelo

Yaphila nini?

iTriassic

iJurassic

iCretaceous

Izigidi ezingama-252 zeminyaka eyadlulayo20114566, i-asteroyidi

Yayinkulu kangakanani?

Yayiphakame kangakanani?

Yayinzima kangakanani?

inzima njengeebhanana ezingama-4

ilula kunekati yasekhayaibinokubhabha inqumle ibala lebhola ekhatywayo lonke ngemizuzwana engama-12

Mirarce wayemkhulu kangakanani xa ethelekiswa NAWE?

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

Yayikhawuleza kangakanani?

Umntu ohambayo malunga ne-5 km/h (3 mph)

Umntwana ekhwele ibhayisikile malunga ne-12 km/h (7 mph)

Mirarce malunga ne-31 km/h (19 mph)

Ihashe elibaleka ngamandla malunga ne-65 km/h (40 mph)

Ingwenkala malunga ne-100 km/h (62 mph)

izinto ezimnandi

Iinyani ezimnandi

Mirarce is the most complete enantiornithine bird ever found in North America.2 1

Its fossil was discovered in 1992 but was not officially named until 2018.1

Mirarce had quill knobs on its ulna bone, which are bumps that help anchor flight feathers. This is the first time such knobs have been found in enantiornithine birds.2 1

It had a deeply keeled sternum (breastbone) and a narrow furcula (wishbone), features that improved its flight abilities.2

Mirarce lived during the Campanian age of the Late Cretaceous, about 76 to 74 million years ago.1

Its name combines Latin 'mirus' (wonderful) and the Greek messenger Arke, referring to its well-preserved flight-related features.1

Umfanekiso owenziwe yi-AI: Mirarce — Umfanekiso owenziwe yi-AI obonisa indlela Mirarce 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: Mirarce

?Was Mirarce a dinosaur?

Yes, Mirarce was a bird, and birds are a type of dinosaur called avialan theropods. So it was a dinosaur, but not a non-avian dinosaur like T. rex.1

?How big was Mirarce?

Mirarce was about the size of a turkey vulture, growing to around 60 cm tall. It weighed about 0.45 kg.1 3

?What did Mirarce eat?

Mirarce was a raptorial predator, meaning it hunted and ate other animals. It had powerful talons and leg tendons, similar to modern birds of prey.1

?When did Mirarce live?

Mirarce lived during the Campanian age of the Late Cretaceous, about 76 to 74 million years ago.1

Kwiingcali zeedayinaso

Igama lenzululwazi: Mirarce
Inikwe igama ngu:: Atterholt et al. 20184
Iqela: Iintaka zokuqala
Usapho / iclade: Avisauridae4
Ukuhlelwa: Theropoda > Avialae4
Ubudala bamatye: 84 ukuya ku-72 izigidi zeminyaka (Campanian)4
Izakhiwo zamatye: Kaiparowits4
Amazwe: iUSA4
Iirekhodi zeefosili: 1 kwi-Paleobiology Database4
Ukufunyanwa: The fossil was collected in 1992 by Howard Hutchison in Utah. It was studied and named by Jesse Atterholt and colleagues in 2018, who called it Mirarce eatoni in honor of paleontologist Jeffrey Eaton.1
Kusaxoxwa ngayo: Scientists are still debating how enantiornithine birds like Mirarce compare to modern birds in terms of flight abilities and evolutionary relationships.2

Apho iinyani zivela khona

Mirarce (en.wikipedia.org)
The most complete enantiornithine from North America and a phylogenetic analysis of the Avisauridae (pmc.ncbi.nlm.nih.gov)
Rare fossil bird deepens mystery of avian extinctions (vcresearch.berkeley.edu)
Mirarce in The Paleobiology Database (CC BY 4.0): ubudala, iindawo, izakhiwo zamatye, ukuhlelwa.

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