Dino Wiki / Zonke iidayinaso / Izitya-zityalo ezinemilomo

Ikhadi ledayinaso No. 0743 kwe-2 027

Gonkoken

Igama lithetha: “similar to a wild duck or swan”1 2

Yayitya: IzityaloIzitya-zityalo ezinemilomoiCretaceous yamva

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

Yaphila

72 ukuya ku-66 izigidi zeminyaka eyadlulayo4

iCretaceous yamva

Iifosili zifunyenwe:

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

Ubude

4 m (13 ft)2

Ubunzima

ukuya kuthi ga ku-1 iitoni (2,200 lb)3

Ukuphakama

1.2 m (3.9 ft)

uqikelelo

Esona santya siphezulu

malunga ne-33 km/h (21 mph)

Ukubaleka, uqikelelo

Yaphila nini?

iTriassic

iJurassic

iCretaceous

Izigidi ezingama-252 zeminyaka eyadlulayo20114566, i-asteroyidi

Yayinkulu kangakanani?

Yayinde kangakanani?

Yayiphakame kangakanani?

uqikelelo

Yayinzima kangakanani?

inzima njengezinja ezingama-50

inde njengezinja ezingama-4, impumlo ukuya emsileniinde njengeebhanana ezingama-22 zilandelelanainzima njengamavatala angama-200inzima njengabantwana basenkulisa abangama-53inzima njengabantwana besikolo abangama-31inzima njengeebhere ezimhlophe ezingama-2ibinokubaleka iimitha ezili-100 ngemizuzwana engama-11 (oyena mntu ukhawulezayo udinga i-9,6)

Gonkoken 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)

Gonkoken malunga ne-33 km/h (21 mph)

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

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

izinto ezimnandi

Iinyani ezimnandi

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

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

?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

Inyaniso ngeentsomi

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

Inyaniso: 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

Kwiingcali zeedayinaso

Igama lenzululwazi: Gonkoken
Inikwe igama ngu:: Alarcón-Muñoz et al. 20234
Iqela: Izitya-zityalo ezinemilomo
Usapho / iclade: Hadrosauroidea4
Ukuhlelwa: Ornithischia > Ornithopoda > Iguanodontia4
Ubudala bamatye: 72 ukuya ku-66 izigidi zeminyaka (Maastrichtian)4
Izakhiwo zamatye: Dorotea4
Amazwe: iChile4
Iirekhodi zeefosili: 1 kwi-Paleobiology Database4
Ukufunyanwa: 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
Kusaxoxwa ngayo: 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

Apho iinyani zivela khona

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): ubudala, iindawo, izakhiwo zamatye, ukuhlelwa.

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