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Gonkoken

Hiika maqaa: “similar to a wild duck or swan”1 2

Kan nyaate: BiqiltootaBiqiltuu-nyaattota afaan simbirroo qabanKireetaashasii Dhumaa

Gonkoken was a small duck-billed dinosaur that lived in what is now southern Chile, near Antarctica. It was about as long as a car and used its hundreds of teeth to chew tough plants. This dinosaur is special because it is not a true hadrosaurid, but a more ancient cousin that survived until the very end of the dinosaur age.2 4

Kan jiraate

waggaa miliyoona 72 hanga 66 dura4

Kireetaashasii Dhumaa

Fosiliiwwan kan itti argaman

Magallanes Region, Chilean Patagonia (Loma Koken, Río de las Chinas Valley)2 4

Dheerina

4 m (13 ft)2

Ulfaatina

hanga 1 toonii (2,200 lb)3

Ol-dheerina

1.2 m (3.9 ft)

tilmaama

Saffisa ol'aanaa

gara 33 km/sa'a (21 mph)

Fiiguu, tilmaama

Yoom jiraate?

Tiraayaasikii

Juraasikii

Kireetaashasii

waggaa miliyoona 252 dura20114566, asteerooyidii

Hammam guddaa ture?

Hammam dheeraa ture?

Hammam ol-dheeraa ture?

tilmaama

Hammam ulfaataa ture?

akka saree 50 ulfaata

akka saree 4 funyaan hanga eegeetti dheeraaakka muuzii 22 walitti hiriiran dheeraaakka habxuu 200 ulfaataakka ijoollee KG 53 ulfaataakka ijoollee mana barumsaa 31 ulfaataakka beeraa adii 2 ulfaatameetira 100 sekondii 11 keessatti fiiguu danda'a (namni hunda caalaa saffisaan 9.6 barbaada)

SI wajjin yoo wal bira qabamu, Gonkoken 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)

Gonkoken gara 33 km/sa'a (21 mph)

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

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

wantoota bareedoo

Odeeffannoowwan bashannansiisoo

Gonkoken is a 'transitional' duckbill, meaning it is closely related to true hadrosaurids but not one itself. Its ancestors came from North America and arrived in South America earlier than the more advanced duckbills.2

The name Gonkoken comes from the Aónik’enk language, spoken by the indigenous people of the region. 'Gon' means 'similar to' and 'koken' means 'wild duck or swan'.2 1

Fossils of Gonkoken were found in a bonebed containing at least three individuals. The site is still being excavated and may hold many more bones.2

Gonkoken lived about 71.7 to 70.5 million years ago, during the early Maastrichtian stage of the Late Cretaceous. This was just a few million years before the asteroid impact that ended the age of dinosaurs.2

Unlike true hadrosaurids, Gonkoken had fewer than 30 tooth positions in its lower jaw, and its tooth rows did not extend beyond the coronoid process.2

Gonkoken is the first duck-billed dinosaur described from a subantarctic region. Its discovery suggests that some alleged hadrosaurid fossils from Antarctica might actually belong to non-hadrosaurid duckbills like Gonkoken.2

Fakkii AI'n hojjetame: Gonkoken — Fakkii AI'n hojjetame kan Gonkoken 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.

ati gaafatte

Gaaffiiwwan waa'ee Gonkoken baay'ee gaafataman

?How big was Gonkoken?

Gonkoken was a small duck-billed dinosaur, about 4 metres (13 feet) long. That is roughly the length of a small car.1 2

?When did Gonkoken live?

Gonkoken lived about 71.7 to 70.5 million years ago, during the early Maastrichtian stage of the Late Cretaceous. That was just a few million years before the asteroid hit.1 2

?Where was Gonkoken found?

Gonkoken fossils were found in the Río de las Chinas Valley in southern Chile, near the tip of South America. It's the first duck-billed dinosaur described from a subantarctic region.1 2

?Is Gonkoken a hadrosaurid?

No, Gonkoken is not a true hadrosaurid. It is a 'transitional' duckbill, meaning it is closely related to hadrosaurids but belongs to a more ancient group.1 2

Seenaa sobaa diigaa

Seenaa sobaa: All duck-billed dinosaurs are hadrosaurids (true duckbills).

Dhugaa: Gonkoken is a duck-billed dinosaur but not a hadrosaurid. It belongs to a more ancient lineage that survived alongside true duckbills in the far south.2

Ogeeyyii daayinootiif

Maqaa saayinsii: Gonkoken
Kan maqaa baase: Alarcón-Muñoz et al. 20234
Garee: Biqiltuu-nyaattota afaan simbirroo qaban
Maatii / kilaadii: Hadrosauroidea4
Ramaddii: Ornithischia > Ornithopoda > Iguanodontia4
Umurii dhagaawwanii: waggaa miliyoona 72 hanga 66 (Maastrichtian)4
Caasaawwan dhagaa: Dorotea4
Biyyoota: Chiilee4
Galmee fosilii: 1 The Paleobiology Database keessa4
Argannoo: Gonkoken was named in 2023 by Alarcón-Muñoz and colleagues. The first bones were found by Mario 'Nano' Ulloa in the Río de las Chinas Valley, and excavations began in 2013, uncovering many disarticulated remains.2 4
Ammallee falmisiisaa: Scientists debate whether all alleged hadrosaurid fossils from Antarctica and subantarctic regions actually belong to non-hadrosaurid duckbills like Gonkoken, rather than true hadrosaurids.2

Odeeffannoon eessaa dhufa

Gonkoken (en.wikipedia.org)
Relict duck-billed dinosaurs survived into the last age of the dinosaurs in subantarctic Chile (science.org)
Scientists discover duck-billed dinosaur roamed Chile 72 million years ago | Reuters (reuters.com)
Gonkoken in The Paleobiology Database (CC BY 4.0): umurii, bakkeewwan, caasaawwan dhagaa, ramaddii.

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