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Gonkoken

Izenaren esanahia: “similar to a wild duck or swan”1 2

Jaten zuen: LandareakLandarejale mokodunakGoi Kretazeoa

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

Bizi izan zen

Duela 72 eta 66 milioi urte artean4

Goi Kretazeoa

Fosilak hemen aurkitu dira:

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

Luzera

4 m (13 ft)2

Pisua

1 tona arte (2 200 lb)3

Altuera

1,2 m (3,9 ft)

kalkulua

Abiadura maximoa

33 km/h inguru (21 mph)

Korrika egitea, kalkulua

Noiz bizi izan zen?

Triasikoa

Jurasikoa

Kretazeoa

Duela 252 milioi urte20114566, asteroidea

Zein handia zen?

Zein luzea zen?

Zein altua zen?

kalkulua

Zein astuna zen?

50 txakur bezain astun

4 txakur bezain luze, sudurretik buztanerabata bestearen atzean jarritako 22 banana bezain luze200 angurria bezain astunhaur-eskolako 53 haur bezain astun31 eskolaume bezain astun2 hartz zuri bezain astun100 metro 11 segundotan egin zitzakeen korrika (gizakirik azkarrenak 9,6 behar ditu)

Zein handia zen Gonkoken ZUREKIN alderatuta?

Zure nabigatzaileko kalkulu hutsak. Ez da ezer gordetzen ez inora bidaltzen.

Zein azkarra zen?

Pertsona bat oinez 5 km/h inguru (3 mph)

Haur bat bizikletan 12 km/h inguru (7 mph)

Gonkoken 33 km/h inguru (21 mph)

Zaldi bat lauhazka 65 km/h inguru (40 mph)

Gepardo bat 100 km/h inguru (62 mph)

gauza bikainak

Datu dibertigarriak

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

Gonkoken: AAk egindako irudia — Gonkoken nolakoa izan zitekeen erakusten duen AAk egindako irudia, ordenagailu batek zientzialariek dakitenetik sortua. Asmakizun bat da: benetako animalia desberdina izan zitekeen, eta inork ez daki zein ziren bere benetako koloreak.

zure galderak

Gonkoken: gehien egindako galderak

?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

Mito-hauslea

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

Egia: 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

Dino adituentzat

Izen zientifikoa: Gonkoken
Izendatzailea:: Alarcón-Muñoz et al. 20234
Taldea: Landarejale mokodunak
Familia / klada: Hadrosauroidea4
Sailkapena: Ornithischia > Ornithopoda > Iguanodontia4
Arroken adina: 72 eta 66 milioi urte artean (Maastrichtian)4
Arroka-formazioak: Dorotea4
Herrialdeak: Txile4
Fosil-erregistroak: 1 The Paleobiology Database datu-basean4
Aurkikuntza: 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
Oraindik eztabaidagai: 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

Datuak nondik datozen

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): adina, tokiak, arroka-formazioak, sailkapena.

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