Garwe hombe rakawanikwa muUnited States

Vatsvakurudzi vakawana rudzi rwemasaramusi garwe muUnited States akararama 100 miriyoni makore madinosaurs asati. Sekuburitswa kwenhau, garwe hombe rakanga riri Whatcheeria rakareba mafiti makumi maviri.

Mhuka iyi yakawanikwa muimestone quarry muIowa, uye kuvepo kwayo kwaive kwakajairika panguva yekutanga Carboniferous. Sayenzi yakawanikwa yakaendeswa kuField Museum muChicago, uko masayendisiti akawana zvitsva nezve mhuka dzakatsakatika uye akaburitsa chinyorwa pamusoro pazvo.

Verenga zvimwe:

Whatcheeria yaive tetrapod yekare yakararama makore 340 miriyoni apfuura. Vesainzi vanodavira kuti mhuka iyi yainyatsogara mumvura uye yaishandisa makumbo nemakumbo kushambira. Chisikwa ichi chaiva chimwe chezvokutanga kuva nemaoko nemakumbo pachinzvimbo chezvimbi.

Nekuwanikwa kwemuenzaniso uyu, masayendisiti akawana kuti haina kukura zvishoma nezvishoma uye zvishoma nezvishoma sezvizhinji zvinokambaira uye amphibians, asi panzvimbo payo yakave nekukura nokukurumidza munguva yayo yechidiki. Hapana humbowo hwave kuwanikwa hunoratidza kuti Whatcheeria yamira kukura.

Mufananidzo: Tetrapod fossil inowanikwa kuNorth America. Credits: Vladimir Wrangel/

Mubvunzurudzo neNewsweek, mumwe munyori wezvidzidzo Kenneth D. Angielczyk akati kukura kwe tetrapod iyi ndiko kunoita kuti ive yakasiyana. "Mamwe echinyakare tetrapods akaongororwa kusvika zvino anokura zvishoma nezvishoma uye anowanzova nenguva yekumira yekukura," akatsanangura.

Tetrapod inogona kunge iri tateguru wemunhu

Kunyangwe yaiita kunge hombe salamander kana garwe, iyo apex predator yakanga isina hukama nemhando. Ndiye chikamu chemutsara wakazoshanduka kuita mhuka dzine makumbo mana sevanhu.

"Whatcheeria inonyanya kukosha tetrapod yekutanga kudzidza nekuti kune mienzaniso yakawanda yayo. Izvi zvinotibvumira kutarisa kusiyanisa pakati pezvipenyu, kusanganisira kusiyana kwakabatana nekukura uye kukura, nenzira yatisingakwanise kune dzakawanda dzekutanga tetrapod marudzi, "Angielczyk akadaro.

Kubva pamienzaniso yakawanda yakawanikwa, masayendisiti anogona kuona misiyano yemarudzi uye kufanana, izvo zvinobatsira kuona mapoinzi eshanduko akagadzirwa mukati mega rega rega wave weWhatcheeria, hofori kusvetukira kumberi kune scalable biology.

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