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Ikarita ya dinozore nimero 0743 muri 2 027

Gonkoken

Izina risobanura: “similar to a wild duck or swan”1 2

Yaryaga: IbimeraIzirya ibimera zifite umunwa w'inyoniKiretase ya nyuma

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

Yabayeho

hashize imyaka miliyoni 72 kugeza 664

Kiretase ya nyuma

Ibisigazwa byabonetse muri

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

Uburebure

4 m (13 ft)2

Uburemere

kugeza kuri toni 1 (2 200 lb)3

Ubutumburuke

1,2 m (3,9 ft)

igereranya

Umuvuduko wo hejuru

nka 33 km/h (21 mph)

Kwiruka, igereranya

Yabayeho ryari?

Triyasike

Jurasike

Kiretase

Hashize miliyoni 252 z'imyaka20114566, asiteroyide

Yanganaga ite?

Yari ndende ite?

Ubutumburuke bwayo bwanganaga iki?

igereranya

Yari iremereye ite?

iremereye nk'imbwa 50

ndende nk'imbwa 4 zikurikiranyendende nk'imineke 22 ikurikiranyeiremereye nk'imbuto 200 za watermeloniremereye nk'abana 53 bo mu ishuri ry'incukeiremereye nk'abanyeshuri 31iremereye nk'idubu 2 zo mu ruburayashoboraga kwiruka metero 100 mu masegonda 11 (umuntu wihuta kurusha abandi akenera 9,6)

Gonkoken yanganaga ite ugereranyije NAWE?

Ni imibare gusa ibarirwa muri mushakisha yawe. Nta kintu kibikwa cyangwa cyoherezwa ahandi.

Yihutaga ite?

Umuntu ugenda n'amaguru nka 5 km/h (3 mph)

Umwana ku igare nka 12 km/h (7 mph)

Gonkoken nka 33 km/h (21 mph)

Ifarashi yiruka cyane nka 65 km/h (40 mph)

Ingwe yihuta cyane nka 100 km/h (62 mph)

utuntu twiza cyane

Utuntu dushimishije

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

Ishusho ya Gonkoken yakozwe na AI — Ishusho yakozwe na AI yerekana uko Gonkoken ishobora kuba yari isa, yakozwe na mudasobwa hashingiwe ku byo abahanga bazi. Ni ugukeka gusa: inyamaswa nyayo ishobora kuba yari isa ukundi, kandi nta muntu uzi amabara yayo nyayo.

wabajije

Ibibazo bibazwa cyane kuri 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

Gusenya ibinyoma

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

Ukuri: 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

Ku bazobereye muri dinozore

Izina rya siyansi: Gonkoken
Yiswe na: Alarcón-Muñoz et al. 20234
Itsinda: Izirya ibimera zifite umunwa w'inyoni
Umuryango / ishami: Hadrosauroidea4
Ishyirwa mu byiciro: Ornithischia > Ornithopoda > Iguanodontia4
Imyaka y'amabuye: imyaka miliyoni 72 kugeza 66 (Maastrichtian)4
Inzego z'amabuye: Dorotea4
Ibihugu: Shili4
Ibisigazwa byanditswe: 1 muri The Paleobiology Database4
Ivumburwa: 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
Biracyagibwaho impaka: 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

Aho amakuru yakuwe

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): imyaka, ahantu, inzego z'amabuye, ishyirwa mu byiciro.

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