Ikarita ya dinozore nimero 1158 muri 2 027

Megapterygius

Izina risobanura: “large wing”1

Yaryaga: InyamaMozazoreKiretase ya nyumaMu by'ukuri si dinozore

Megapterygius was a huge marine lizard that swam in the seas around Japan 72 million years ago. It had enormous flippers that were longer than its head, and scientists think it even had a dorsal fin like a shark!1 2

Akantu gashimishije: iki gikururanda cyo mu nyanja cyogaga mu gihe dinozore zagendaga ku butaka. Bose bakita dinozore, ariko cyari mu rindi shami ry'ibikururanda.

Yabayeho

hashize imyaka miliyoni 84 kugeza 664

Kiretase ya nyuma

Ibisigazwa byabonetse muri

Wakayama Prefecture, Japan1

Uburebure

6 m (20 ft)1

Uburemere

150 kg kugeza 450 kg (331 kugeza 992 lb)3

Umuvuduko wo hejuru

nka 38 km/h (24 mph)

Koga, igereranya

Yabayeho ryari?

Triyasike

Jurasike

Kiretase

Hashize miliyoni 252 z'imyaka20114566, asiteroyide

Yanganaga ite?

Yari ndende ite?

Yari iremereye ite?

iremereye nk'imbwa 22

ndende nk'imbwa 6 zikurikiranyendende nk'imineke 33 ikurikiranyeiremereye nk'imbuto 90 za watermeloniremereye nk'abana 24 bo mu ishuri ry'incukeiremereye nk'abanyeshuri 14yashoboraga koga uburebure bwa pisine nini (50 m) mu masegonda 4,7

Megapterygius 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)

Megapterygius nka 38 km/h (24 mph)

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

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

utuntu twiza cyane

Utuntu dushimishije

Megapterygius had rear flippers that were even longer than its front flippers, a feature only seen in one other mosasaur, Tylosaurus.1

Its flippers were longer than its skull, which is unique among mosasaurs with paddle-like limbs.1

The shape of its backbone suggests it had a dorsal fin, like a dolphin or shark, which would have helped it turn quickly in the water.1 2

Its skull was slightly wide around the eye sockets, giving it binocular vision that helped it hunt prey. This is only the second mosasaur known to have this ability.1

The fossil was found in 2006 by Akihiro Misaki, who was actually looking for ammonite fossils when he spotted a vertebra.1 2

More than 100 shark teeth were found around the Megapterygius skeleton, suggesting that sharks scavenged its body after it died.1

Megapterygius is the most complete mosasaur skeleton ever found in Japan or the northwestern Pacific.2

Ishusho ya Megapterygius yakozwe na AI — Ishusho yakozwe na AI yerekana uko Megapterygius 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 Megapterygius

?How big was Megapterygius?

Megapterygius was about 6 metres long, with a skull about 0.8 metres long. That is roughly the size of a large great white shark.1 2

?Did Megapterygius have a dorsal fin?

Scientists think it did. The shape of its backbone is like that of dolphins and porpoises, which have dorsal fins, and this would have helped it turn quickly in the water. It's the first mosasaur with evidence of a dorsal fin.1 2

?What did Megapterygius eat?

Scientists think it hunted large groups of small prey, like schools of fish. Its binocular vision and big flippers would have helped it catch them.1

?When did Megapterygius live?

Megapterygius lived about 72 million years ago, during the Late Cretaceous period, in the seas around Japan.1 2

Ku bazobereye muri dinozore

Izina rya siyansi: Megapterygius
Yiswe na: Konishi et al. 20234
Itsinda: Mozazore
Umuryango / ishami: Mosasauridae4
Ishyirwa mu byiciro: Mosasauroidea4
Imyaka y'amabuye: imyaka miliyoni 84 kugeza 66 (Campanian / Maastrichtian)4
Inzego z'amabuye: Toyajo4
Ibihugu: Ubuyapani4
Ibisigazwa byanditswe: 1 muri The Paleobiology Database4
Ivumburwa: The fossil was discovered in 2006 by Akihiro Misaki in Wakayama Prefecture, Japan. It was named Megapterygius wakayamaensis by Takuya Konishi and colleagues in 2023.1 2
Biracyagibwaho impaka: Scientists are still debating how Megapterygius used its four large flippers and tail fin together for swimming, since no modern animal has a similar body shape.2

Aho amakuru yakuwe

Megapterygius (en.wikipedia.org)
UC paleontologist describes Wakayama 'blue dragon' that ruled prehistoric waters off Japan - University of Cincinnati: Founder of Co-op, Leader in Co-op | University of Cincinnati (uc.edu)
Megapterygius | Dino Encyclopedia (dinosaurmuseum.jp)
Megapterygius in The Paleobiology Database (CC BY 4.0): imyaka, ahantu, inzego z'amabuye, ishyirwa mu byiciro.

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