Ọkà mmụta sayensị mechara hụ ihe mere ikpochapu nke Megalodon

N'ime ya mere eme, ụwa enwetela ise uka extinctions (ma ọ bụ 8, dabere na ihe nhazi ọkwa ị na-eme). The kasị njọ nke a bụ oké ikpochapu 252 nde afọ gara aga, mere site na ọdachi ga-emerụ ahụ na unichtozhevshee pasent 96 nke ihe nile di iche iche.

mgbanwe

Otú ọ dị, ụfọdụ n'ime "nta" nke ikpochapu, ọ bụ nnọọ ihe doro anya, nwere ike ize eze uche anyị. Ka ihe atụ, ndị ọkà mmụta sayensị ogologo chere na oge nke mgbanwe n'etiti Pliocene na Pleistocene (banyere 2.6 nde afọ gara aga), e nwere a ịrịba ikpochapu, ma ọ bụ ike ikpebi otú ọdachi ọ bụ.

Ugbu a a ọhụrụ ọmụmụ site na-eme nnyocha na Mahadum nke Zurich chọpụtara na, tupu ama megafauna planet - woolly mammoths na saber-toothed nwamba - metụtara ọtụtụ-emegide ihe, oké osimiri tara ahụhụ losses.

Mgbanwe a n'etiti abụọ geological epochs akara mgbanwe ke ekpo ọkụ na mmalite nke ọtụtụ glaciation, nke o doro anya na mere a ngwa ngwa dobe na oké osimiri na a ịrịba jụrụ nke mmiri.

Mere nwuchapu mmiri megafauna

Dabere na ọhụrụ atụmatụ nke mmanu ndi mere onwe ndekọ, ndị ọkà mmụta sayensị kwubiri na ọ bụ iji na-egbu a ijuanya nnukwu ọnụ ọgụgụ nke nnukwu oké osimiri e kere eke: a ngụkọta nke otu ụzọ n'ụzọ atọ nke mmiri megafauna ghọrọ nwuchapu n'oge mgbanwe a.

Hardest kụrụ mmiri mammals, adịkwa 55% nke di iche iche. Ke adianade do, ya furu efu ụfọdụ 35% nke mmiri na nnụnụ na 43% nke oké osimiri turtles. Ọ bụ ihe kwesịrị ịrịba ama na n'oge a ghọrọ nwuchapu, naanị 9 pasent nke umu azu shark, ma n'etiti ha bụ nnọọ kwesiri ngosi na mkpa umu.

The ofufe nke Megalodon

Anyị, n'ezie, na-ekwu okwu banyere Megalodon - otu n'ime ndị kasị ibu na ọtụtụ na-atụ egwu anụ na ihe mere eme nke ụwa, nke na-etolite ruo 18 mita. Ọ bụ na-akpali na site n'oge ruo n'oge na web e na-eche na a jọgburu onwe anụ ọhịa ka lurks ebe ke ogbu nke oké osimiri.

N'agbanyeghị ihe niile ndị a akụkọ, ndị ọkà mmụta sayensị amata nke ọma na Megalodon ghọrọ nwuchapu 2.6 nde afọ gara aga. Ebe ọ bụ na e mbụ chọpụtara mmanu ndi mere onwe-egosi na ha na-adị, ndị ọkà mmụta sayensị na-agbalị ịghọta ihe mere nke a mere. Anyị na e nyere a dịgasị iche iche nke ihe, gụnyere ida nke nri yinye, oké mpi si anụmanụ ndị ọzọ na mberede jụrụ nke oké osimiri.

Self-mbibi nke ndị na nri yinye

A ọhụrụ ọmụmụ banyere isiokwu a na e bipụtara na Nature Ọmụmụ & Evolution magazine. Ọkà mmụta sayensị na-atụ aro na weere ruru belata oké osimiri na-etoju nke iche iche nke ala gbara osimiri okirikiri ebe bụ iji ime ka a uka ikpochapu na gaghị adị ndụ ọbụna oge ochie basking shark. N'eziokwu, ihe na-akpata ikpochapu nke Megalodon bụ onwe-ebibi nri yinye.

"The oghere nke ihe omume a ikpochapu na-egosi na ndu di iche iche nke mmiri megafauna ọzọ chebaara mgbanwe na-erukwa na gburugburu ebe obibi karịa na mbụ chere" - na ndị ọkà mmụta sayensị na-ekwu. Mgbe ahụ, ha na-ezo aka ugbu a ụmụ mmadụ na-akpata mgbanwe ihu igwe, na-ekwu na ya "nwere pụta n'ihi na mmiri megafauna ekwesịghị eleda."