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Polycotylus

Hiika maqaa: “much-cupped vertebrae”1

Kan nyaate: FoonPileesiyoosarootaJuraasikii Dhumaa hanga Kireetaashasii DhumaaSeera saayinsiitiin daayinoosarii miti

Polycotylus was a short-necked plesiosaur that swam in the warm seas of North America and Europe during the Cretaceous. It had a big head, strong flippers, and gave birth to live babies in the water, just like whales do today.1

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 152 hanga 72 dura3

Juraasikii Dhumaa hanga Kireetaashasii Dhumaa

Fosiliiwwan kan itti argaman

Kansas, South Dakota, Alabama, and Wyoming in the USA; also France and Russia1 2

Dheerina

4.7 hanga 5.4 m (15 hanga 18 ft)1

Ulfaatina

1 toonii (2,200 lb)1

Saffisa ol'aanaa

gara 27 km/sa'a (17 mph)

Daakuu, tilmaama

Yoom jiraate?

Tiraayaasikii

Juraasikii

Kireetaashasii

waggaa miliyoona 252 dura20114566, asteerooyidii

Hammam guddaa ture?

Hammam dheeraa ture?

Hammam ulfaataa ture?

akka saree 50 ulfaata

akka saree 5 funyaan hanga eegeetti dheeraaakka muuzii 30 walitti hiriiran dheeraaakka habxuu 200 ulfaataakka ijoollee KG 53 ulfaataakka ijoollee mana barumsaa 31 ulfaataakka beeraa adii 2 ulfaatadheerina bishaan daakaa guddaa (50 m) sekondii 6.7 keessatti daakuu danda'a

SI wajjin yoo wal bira qabamu, Polycotylus 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)

Polycotylus gara 27 km/sa'a (17 mph)

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

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

wantoota bareedoo

Odeeffannoowwan bashannansiisoo

Polycotylus was named by famous paleontologist Edward Drinker Cope in 1869 from fossils found in Kansas.1

A fossil of Polycotylus found in Kansas contains a single large fetus inside the mother, proving that these plesiosaurs gave live birth.1

The baby Polycotylus was about 1.5 metres (4.9 feet) long, which is about 32 percent of the mother's length.1

Polycotylus had a short neck and a long head, making it look a bit like a pliosaur, but it is actually a type of plesiosaur called a polycotylid.1

Its name means 'much-cupped vertebrae' because the bones in its spine have deep cup-like hollows.1

Polycotylus lived in the Western Interior Seaway, a shallow sea that split North America in two during the Cretaceous.1

Scientists think Polycotylus gave birth to just one large baby at a time, a strategy called K-selection.1

Fakkii AI'n hojjetame: Polycotylus — Fakkii AI'n hojjetame kan Polycotylus 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 Polycotylus baay'ee gaafataman

?How big was Polycotylus?

Polycotylus was a medium-sized plesiosaur, measuring about 4.7 to 5.4 metres (15 to 18 feet) long and weighing over 1 metric ton (1.1 short tons).1

?Did Polycotylus have a short neck?

Yes, Polycotylus had a short neck and a long head, unlike the long-necked plesiosaurs like Elasmosaurus.1

?What did Polycotylus eat?

Polycotylus had thick teeth with striations on their surfaces, which suggests it ate fish and other marine animals, but the sources do not give a specific diet.1

?When did Polycotylus live?

Polycotylus lived toward the end of the Cretaceous period, about 84 to 66 million years ago.1

Seenaa sobaa diigaa

Seenaa sobaa: Many people think all plesiosaurs had long necks like the Loch Ness Monster.

Dhugaa: Polycotylus had a short neck and a large head, very different from long-necked plesiosaurs like Elasmosaurus.1

Ogeeyyii daayinootiif

Maqaa saayinsii: Polycotylus
Kan maqaa baase: Cope 18693
Garee: Pileesiyoosaroota
Maatii / kilaadii: Polycotylidae3
Ramaddii: Plesiosauria > Sauropterygia3
Umurii dhagaawwanii: waggaa miliyoona 152 hanga 72 (Kimmeridgian / Campanian)3
Caasaawwan dhagaa: Niobrara, Frontier, Mooreville Chalk3
Biyyoota: Ameerikaa, Faransaay, Raashiyaa3
Galmee fosilii: 10 The Paleobiology Database keessa3
Argannoo: Edward Drinker Cope named Polycotylus in 1869 from fragmentary bones found in the Niobrara Formation of Kansas. A nearly complete skeleton was later found in Alabama in 1949 but not described until 2002.1
Ammallee falmisiisaa: Scientists are not sure exactly how many species of Polycotylus existed, and some species may be the same as others.1

Odeeffannoon eessaa dhufa

Polycotylus (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
Polycotylus in The Paleobiology Database (CC BY 4.0): umurii, bakkeewwan, caasaawwan dhagaa, ramaddii.

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