Grabauornis

Hiika maqaa: “Grabau's bird”1

Kan nyaate: FoonSimbirroota jalqabaaKireetaashasii Jalqabaa

Grabauornis was a small, toothed bird that lived about 125 million years ago in what is now China. It was a good flyer and had a special thumb feather called an alula that helped it steer in the air.1 2

Kan jiraate

waggaa miliyoona 126 hanga 120 dura4

Kireetaashasii Jalqabaa

Fosiliiwwan kan itti argaman

Liaoning Province, China1 3

Dheerina

0.1 hanga 0.3 m (0.3 hanga 1 ft)3

Saffisa ol'aanaa

gara 27 km/sa'a (17 mph)

Balali'uu, tilmaama

Yoom jiraate?

Tiraayaasikii

Juraasikii

Kireetaashasii

waggaa miliyoona 252 dura20114566, asteerooyidii

Hammam guddaa ture?

Hammam dheeraa ture?

akka bilookii ijaarsaa taphaa 9 tarreen dheeraadirree kubbaa miilaa guutuu sekondii 14 keessatti balali'ee ce'uu danda'a

SI wajjin yoo wal bira qabamu, Grabauornis hammam guddaa ture?

Herrega qofa barbaadduu kee keessatti. Wanti tokkollee hin olkaa'amu, eessayyuu hin ergamu.

Hammam saffisaa ture?

Nama miilaan deemu gara 5 km/sa'a (3 mph)

Daa'ima saayikilii irra jiru gara 12 km/sa'a (7 mph)

Grabauornis gara 27 km/sa'a (17 mph)

Farda gulufu gara 65 km/sa'a (40 mph)

Cheetaa gara 100 km/sa'a (62 mph)

wantoota bareedoo

Odeeffannoowwan bashannansiisoo

Grabauornis belongs to a group of early birds called enantiornitheans, which were the most common birds during the Age of Dinosaurs.1

Its humerus (upper arm bone) was 95% the length of its ulna (forearm bone), which is about average for enantiornitheans and shows it was a capable flyer.1 2

The fossil of Grabauornis was found in the Yixian Formation, a famous rock layer that has preserved many amazing feathered dinosaurs and early birds.1 3

Grabauornis had an alula, a small feather on its thumb that helped it fly slowly and land precisely, like the flaps on an airplane wing.1 2

The name Grabauornis honors Amadeus William Grabau, a famous geologist and paleontologist who worked in China.1

Its wishbone had a well-developed hypocleidium, a part that helped strengthen its chest for powerful wing beats.1

Fakkii AI'n hojjetame: Grabauornis — Fakkii AI'n hojjetame kan Grabauornis maal fakkaachuu akka danda'u agarsiisu, kompiitaraan beekumsa saayintistootaa irratti hundaa'uun hojjetame. Tilmaama qofa: bineensi dhugaa adda ta'ee mul'achuu danda'a, halluu isaa dhugaa immoo namni beeku hin jiru.

Ogeeyyii daayinootiif

Maqaa saayinsii: Grabauornis
Kan maqaa baase: Dalsatt et al. 20144
Garee: Simbirroota jalqabaa
Maatii / kilaadii: Euenantiornithes4
Ramaddii: Theropoda > Avialae4
Umurii dhagaawwanii: waggaa miliyoona 126 hanga 120 (Barremian / Aptian)4
Caasaawwan dhagaa: Yixian4
Biyyoota: Chaayinaa4
Galmee fosilii: 1 The Paleobiology Database keessa4
Argannoo: Grabauornis was named and described in 2014 by scientists Johan Dalsätt, Per Ericson, and Zhou Zhonghe. The fossil was found near the city of Lingyuan in Liaoning, China.1 2
Ammallee falmisiisaa: Scientists are still debating exactly how Grabauornis is related to other enantiornithean birds, since its skeleton shows a unique mix of features.1

Odeeffannoon eessaa dhufa

Grabauornis (en.wikipedia.org)
A New Enantiornithes (Aves) from the Early Cretaceous of China (geojournals.cn)
PBDB Taxon (paleobiodb.org)
Grabauornis in The Paleobiology Database (CC BY 4.0): umurii, bakkeewwan, caasaawwan dhagaa, ramaddii.

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