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Megapterygius

Hiika maqaa: “large wing”1

Kan nyaate: FoonMoosaasarootaKireetaashasii DhumaaSeera saayinsiitiin daayinoosarii miti

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

Odeeffannoo bashannansiisaa: harkifataan galaanaa kun yeroo daayinoosarootni lafa irra deemaa turan daakaa ture. Namni hundi daayinoo jedhee isaan waama, garuu damee harkifattootaa adda ta'e turan.

Kan jiraate

waggaa miliyoona 84 hanga 66 dura4

Kireetaashasii Dhumaa

Fosiliiwwan kan itti argaman

Wakayama Prefecture, Japan1

Dheerina

6 m (20 ft)1

Ulfaatina

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

Saffisa ol'aanaa

gara 38 km/sa'a (24 mph)

Daakuu, tilmaama

Yoom jiraate?

Tiraayaasikii

Juraasikii

Kireetaashasii

waggaa miliyoona 252 dura20114566, asteerooyidii

Hammam guddaa ture?

Hammam dheeraa ture?

Hammam ulfaataa ture?

akka saree 22 ulfaata

akka saree 6 funyaan hanga eegeetti dheeraaakka muuzii 33 walitti hiriiran dheeraaakka habxuu 90 ulfaataakka ijoollee KG 24 ulfaataakka ijoollee mana barumsaa 14 ulfaatadheerina bishaan daakaa guddaa (50 m) sekondii 4.7 keessatti daakuu danda'a

SI wajjin yoo wal bira qabamu, Megapterygius hammam guddaa ture?

Herrega qofa barbaadduu kee keessatti. Wanti tokkollee hin olkaa'amu, eessayyuu hin ergamu.

Hammam saffisaa ture?

Nama miilaan deemu gara 5 km/sa'a (3 mph)

Daa'ima saayikilii irra jiru gara 12 km/sa'a (7 mph)

Megapterygius gara 38 km/sa'a (24 mph)

Farda gulufu gara 65 km/sa'a (40 mph)

Cheetaa gara 100 km/sa'a (62 mph)

wantoota bareedoo

Odeeffannoowwan bashannansiisoo

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

Fakkii AI'n hojjetame: Megapterygius — Fakkii AI'n hojjetame kan Megapterygius maal fakkaachuu akka danda'u agarsiisu, kompiitaraan beekumsa saayintistootaa irratti hundaa'uun hojjetame. Tilmaama qofa: bineensi dhugaa adda ta'ee mul'achuu danda'a, halluu isaa dhugaa immoo namni beeku hin jiru.

ati gaafatte

Gaaffiiwwan waa'ee Megapterygius baay'ee gaafataman

?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

Ogeeyyii daayinootiif

Maqaa saayinsii: Megapterygius
Kan maqaa baase: Konishi et al. 20234
Garee: Moosaasaroota
Maatii / kilaadii: Mosasauridae4
Ramaddii: Mosasauroidea4
Umurii dhagaawwanii: waggaa miliyoona 84 hanga 66 (Campanian / Maastrichtian)4
Caasaawwan dhagaa: Toyajo4
Biyyoota: Jaappaan4
Galmee fosilii: 1 The Paleobiology Database keessa4
Argannoo: 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
Ammallee falmisiisaa: 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

Odeeffannoon eessaa dhufa

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): umurii, bakkeewwan, caasaawwan dhagaa, ramaddii.

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