Dino Wiki / Dino yépp / Dino yu lekk gàncax te am gémmiñu picc

Kartu dino No. 0743 ci 2 027

Gonkoken

Tur bi mooy: “similar to a wild duck or swan”1 2

Lekkoon: GàncaxDino yu lekk gàncax te am gémmiñu piccKretase bu mujj

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

Dundoon

am na 72 ba 66 milyoŋ at4

Kretase bu mujj

Fosil yu ñu gis ci

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

Guddaay

4 m (13 ft)2

Diisaay

ba 1 toon (2 200 lb)3

Kawewaay

1,2 m (3,9 ft)

jortu

Gaawaay bi gën a kawe

lu tollu ci 33 km/h (21 mph)

Daw, jortu

Kañ la dundoon?

Triyaas

Jurasik

Kretase

Am na 252 milyoŋ at20114566, asteroyid bi

Naka la réyoon?

Naka la guddoon?

Naka la kawewoon?

jortu

Naka la diisoon?

diis ni 50 xaj

gudd ni 4 xaj, bakkan ba geengudd ni 22 banaana yu ñu topp-toppalediis ni 200 xaaldiis ni 53 xale yu materneldiis ni 31 xale yu lekkooldiis ni 2 uurs yu weexmënoon na daw 100 meetar ci 11 segond (nit ki gën a gaaw dafay soxla 9,6)

Naka la Gonkoken réyoon, bu ñu ko méngalee ak YAW?

Ay kalkil rekk ci sa navigatëer. Dara du ñu denc, dara du ñu yónne fenn.

Naka la gaawoon?

Nit kuy dox lu tollu ci 5 km/h (3 mph)

Xale bu nekk ci welo lu tollu ci 12 km/h (7 mph)

Gonkoken lu tollu ci 33 km/h (21 mph)

Fas buy daw bu gaaw lu tollu ci 65 km/h (40 mph)

Segg bu gaaw lu tollu ci 100 km/h (62 mph)

yëf yu neex

Xibaar yu neex

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

Nataalu Gonkoken bu ñu def ak IA — Nataal bu IA def la, muy wone ni Gonkoken mën a meloon, ordinatëer moo ko def ci li boroom xam-xam yi xam. Jortu kese la: rab bi ci dëgg mën na meloon neneen, te kenn xamul ay kulëëram yu dëgg.

yeen a laaj

Laaj yi ñu gën a laaj ci 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

Ku tas léeb yu dul dëgg

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

Dëgg: 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

Ngir ñi xam dino lool

Turu xam-xam: Gonkoken
Ku ko tudde: Alarcón-Muñoz et al. 20234
Kurél: Dino yu lekk gàncax te am gémmiñu picc
Njaboot / klad: Hadrosauroidea4
Klasifikasiyoŋ: Ornithischia > Ornithopoda > Iguanodontia4
Màggaayu doj yi: 72 ba 66 milyoŋ at (Maastrichtian)4
Formasiyoŋi doj: Dorotea4
Réew yi: Sili4
Fosil yu ñu gis: 1 ci The Paleobiology Database4
Gisees: 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
Ñu ngi koy werante ba tey: 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

Fa xibaar yi jóge

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): at, béréb yi, formasiyoŋi doj, klasifikasiyoŋ.

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