Dinosaurs nyob thiab tsa lawv cov tub ntxhais hluas nyob ze rau sab Qaum Teb

Dinosaurs nyob thiab tsa lawv cov tub ntxhais hluas nyob ze rau sab Qaum Teb
Dinosaurs nyob thiab tsa lawv cov tub ntxhais hluas nyob ze rau sab Qaum Teb
Anonim

Rau ntau dinosaurs, Arctic yog qhov chaw zoo rau pib tsev neeg. Dinosaurs tsis yog tsuas yog siv lawv lub caij ntuj sov hauv qhov siab latitudes ntawm Arctic, lawv tuaj yeem nyob ntawd txhua xyoo puag ncig, cov pov thawj pob zeb tshiab qhia. Fossilized mis hniav thiab pob txha qhia tias qee tus dinosaurs tsa lawv cov tub ntxhais hluas nyob ze rau sab Qaum Teb.

Pua pua ntawm cov pob txha thiab cov hniav pom raws tus Dej Colville nyob rau sab qaum teb Alaska yog dinosaur me nyuam qaib, cov kws tshawb fawb hais. Tus Tub Vaj Ntxwv Creek tau sawv cev rau xya tsev neeg ntawm dinosaurs, suav nrog Tyrannosaurus, Duck-billed Adrosaurus, Horned Ceratopsids, thiab Crested Ceratopsids.

Patrick Druckenmiller ntawm University of Alaska Tsev khaws puav pheej ntawm Sab Qaum Teb hauv Fairbanks hais tias "Cov no yog cov nyob sab qaum teb tshaj plaws (tsis yog neeg Esxias)." "Lawv tau ua zes, khaws thiab ua qe … xyaum ua nyob rau sab Qaum Teb."

Qee qhov ntawm cov dinosaurs no tau tsim lawv cov qe rau txog rau lub hlis, raws li qhia los ntawm cov ntaub ntawv dhau los (SN: 1/23/17). Qhov ntawd yuav tawm sijhawm me me rau ib qho ໄດ ໂນ ເສົາ ua zes hauv Arctic kom tsiv mus rau sab qab teb ua ntej lub caij ntuj no, Druckenmiller thiab cov npoj yaig tshaj tawm Lub Rau Hli 24 hauv phau ntawv xov xwm Tam Sim No Biology. Thiab cov xeeb leej xeeb ntxwv yuav nyuaj rau txoj sia ntev.

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Ntau pua tus hniav thiab pob txha ntawm menyuam yaus dinosaurs pom nyob rau sab qaum teb Alaska yog cov pov thawj zoo tshaj plaws uas qee cov dinosaurs tau zes thiab tsa lawv cov xeeb ntxwv hauv Arctic. Cov seem suav nrog Tyrannosaurus hniav (sab laug), Ceratopsid hniav (sab laug sab saum toj), thiab pob txha theropod (nruab nrab sab xis).

Thaum lub neej ntawm dinosaurs, Arctic tau sov me ntsis dua li niaj hnub no. Nyob nruab nrab ntawm 80 thiab 60 lab xyoo dhau los, qhov nruab nrab qhov kub thiab txias txhua xyoo hauv thaj av no yog li 6 ° C - zoo ib yam li hauv Ottawa niaj hnub no, raws li cov nroj tsuag fossil los ntawm Prince Creek Formation. Txawm li cas los xij, hibernating dinosaurs yuav tsum tau tiv lub hlis tsaus ntuj, txias txias, thiab txawm tias los daus, Druckenmiller tau hais.

Tej zaum lawv yuav tau tawm tsam qhov txias nrog insulating plaub los yog qee qhov ntawm qhov sov-ntshav (SN: 4/4/12); SN: 6/13/14), thiab cov tshuaj ntsuab tuaj yeem tau hibernated lossis pub rau ntawm cov nroj tsuag lwj thaum cov zaub mov tshiab ploj zuj zus hauv lub hlis tsaus ntuj, Druckenmiller qhia. Nws lees paub tias kev nrhiav tus menyuam mos dinosaur fossils tau tsa cov lus nug ntau dua li cov lus teb.

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