Nzira yekutonga sei dinosaurs?

Zvinenge zvese zvipenyu zvipenyu zvinoberekana kuburikidza nekuberekana pabonde,soakaita dinosaurs. Maitiro epabonde emhuka mhenyu anowanzo kuve nekunze kwekunze, saka zviri nyore kusiyanisa varume nevakadzi. Semuenzaniso, mapikoko ane minhenga yemuswe inoyevedza, shumba hono dzine mazino marefu, uye gono hono dzine nyanga uye dzakakura kudarika hadzi. Semhuka yeMesozoic, mapfupa e dinosaurs akavigwaunderpasi kwemakumi emamiriyoni emakore, uye zvinyoro zvinyoroizvoinogona kuratidza kuti munhukadziye dinosaursdzakanyangarika, ndizvo zvazvirizvakaomakusiyanisa hutano hwemadinosaur! Zvizhinji zvezvisaririra zvakawanikwa ibhonzos, uye mashoma etsandanyama nezvinobuda paganda zvinogona kuchengetedzwa. Saka isu tinotonga sei murume kana mukadzi kubva kune aya mafossils?

Chirevo chekutanga chinobva pakuti pane medullary bone. Mary Schweitzer, nyanzvi yezvakaitika kare paUniversity of North Carolina muUnited States, paakaongorora zvakadzama “Bob” (tyrannosaur fossil), akawana kuti pane pfupa rinokosha mumapfupa ezvisaririra, ravakadana kuti. pfupa mwongo. Iyo mwongo wepfupa unoonekwa panguva yekubereka nekukandira kweshiri dzechikadzi, uye kunyanya inopa calcium kumazai. Mamiriro ezvinhu akafanana akaonekwawo mune akati wandei madhinosaurs, uye vaongorori vanogona kuita mutongo nezvebonde remadinosaur. Muchidzidzo ichi, femur yeiyi dinosaur fossil yakave chinhu chakakosha pakuziva bonde remadinosaur, uye ndiro zvakare bhonzo rakareruka kuziva murume kana murume. Kana mutsetse weporous bone tissue ukawanikwa wakatenderedza medullary cavity ye dinosaur bone, zvinogona kusimbiswa kuti iri idinosaur rechikadzi munguva yekuradzika. Asi nzira iyi inokodzera chete kubhururuka dinosaurs uye dinosaurs akagadzirira kubereka kana kuti asununguka, uye haagoni kuziva dinosaurs asina pamuviri.

Yechipiristatement ndiko kusiyanisa kubva pane crest of dinosaurs. Vanochera matongo vakambofunga izvozvomurume kana mukadzi yaigona kusiyaniswa necrests of dinosaurs, nzira yainyanya kukodzera Hadrosaurus. Maererano neextentyekushomeka uye chinzvimbo che“korona" yeHadrosaurus, munhukadzi anogona kusiyaniswa. Asi nyanzvi ye paleontologist Milner anopikisa izvi, WHOsaid, "Kune misiyano mumakorona emamwe marudzi emadinosaur, asi izvi zvinogona kungofungidzirwa uye kufungidzira." Pasinei netiri misiyanopakati dinosaur crests, nyanzvi hadzina kukwanisa kutaura kuti ndezvipi zvimiro zvechirume uye ndezvipi zvechikadzi.

Chirevo chechitatu ndechekuita mitongo yakavakirwa pane yakasarudzika chimiro chemuviri. Hwaro ndehwekuti mumhuka dzinoyamwisa nezvinokambaira mhenyu, mukono unowanzo shandisa zvimiro zvemuviri zvakakosha kukwezva hadzi. Somuenzaniso, mhino yetsoko inonzi proboscis mudziyo unoshandiswa nevarume kukwezva hadzi. Zvimwe zvimiro zvemadinosaur zvinofungidzirwa kuti zvinoshandiswa kukwezva vakadzi zvakare. Semuenzaniso, mhino ine spiny yeTsintaosaurus spinorhinus uye korona yeGuanlong wucaii inogona kunge iri chombo cheshiripiti chinoshandiswa nevarume kukwezva vakadzi. Zvisinei, hapana zvisaririra zvakakwana kusimbisa izvi parizvino.

Chirevo chechina ndechekutonga nekukura kwemuviri. Madhinaini akasimba emhando imwe chete anogona kunge aive marume. Semuenzaniso, madehenya echirume Pachycephalosaurus anoita seanorema kupfuura aya echikadzi. Asi ongororo inopikisa chirevo ichi, ichikurudzira mutsauko wepabonde mune mamwe marudzi edhinasori, kunyanya Tyrannosaurus rex, yakakonzera kusarura kukuru mukuziva muruzhinji. Makore mazhinji apfuura, bepa rekutsvagisa rakataura kuti T-rex yechikadzi yaive yakakura kupfuura yechirume T-rex. Nekudaro, izvi zvaingobva pamakumi maviri neshanu asina kukwana skeleton samples. Tinoda mamwe bhonzo kuti tiongorore zvizere hunhu hwepabonde hwemadinosaurs.

Zvakaoma zvikuru kuona kuti mhuka dzakatsakatika dzekare dzakaita sei kuburikidza nemafossils, asi tsvakurudzo yavo inobatsira zvikuru kune vezvesaenzi vemazuva ano uye ine simba rinokosha pamararamiro edinosaur. Zvisinei, kune mienzaniso mishoma kwazvo munyika iyo inogona kunyatso dzidza nezvechikadzi chemadinosaur, uye kune vashoma vaongorori vesainzi mune zvinoenderana.

Kawah Dinosaur Yepamutemo Webhusaiti:www.kawadinosaur.com