La paleobotany Yimbulelo yesayensi apho sinokuthi, ubuncinci, indlela umhlaba ekufuneka ujonge ngayo ngaphambili, kodwa hayi kuphela, kodwa ikwasivumela ukuba sazi ukuba yayiyintoni na imozulu kwaye, eyona nto inomdla xa kunokwenzeka: indlela izityalo ezivele ngayo ngokuhamba kwexesha.
Ngokuqinisekileyo lisebe elinomdla le paleontology. Iintsalela zezinto ezikhoyo ezize kuthi zisivumela ukuba sikhe sibone ixesha laxa ikhaya lethu, uMhlaba, lalihlalwa ngabantu esingakhange sibarhanele ukuba babelapha ngenye indlela.
Zafakwa njani iifosili?
Njengoko sisazi, izityalo azinako ukuhambahamba. Ziyakhula kwaye zife apho imbewu yahluma khona. Bakuba bengenabomi, baba kukutya kwamagciwane, ngakumbi ukungunda; ngenxa yoku, akukho lula ukufumana iifosili zezityalo. Kodwa, xa unikwe iimeko ezifanelekileyo, banokubumba.
Kuxhomekeka ukuba bakuphi okanye bangcwatywa phi, sahlula iintlobo ezahlukeneyo:
- Ikhabhoni: yenzeka xa isityalo siwela kumgxobhozo kwaye sifakwe kwindawo ephantsi yeoksijini. Ngokwenza njalo, ii-carbohydrate ezenza iselulose ziyehla kancinci kancinci, zikhuphe imethane kunye nekharbon diokside.
- Imibono- Ivela xa ubutyobo bezityalo, umzekelo igqabi okanye intyatyambo, zishicilelwe kwintlabathi.
- Amaminerali: Kwenzeka xa izidumbu zingcwatywa phantsi kweentlenga. Izicubu zomzimba zithatyathelw 'indawo zizimbiwa.
- Umngundo: Kwenzeka xa ezona ndawo zininzi zezityalo zingcwatywa kwintlenga. Kwimeko apho ingaphakathi le-log litshatyalalisiwe, umsantsa uya kuhlala, kodwa ukuba umsantsa uzaliswe ngentlenga, i-countermold iya kuyilwa.
Zicocwa njani iifosili?
Amathambo, kokubini izityalo kunye nezilwanyana, xa sele zifunyenwe kwaye zakhutshwa, into yokuqala eyenziwayo yile zigqume ngodaka. Nangona "engamatye", eneneni ziingceba ezibuthathaka kakhulu ezinokuthi, ukuba zinganyangwa ngononophelo olukhulu, zilahleke ngonaphakade.
Nje ukuba basiwe elebhu Uluhlu oluphezulu lweplasta luyasuswa lucocwe ngombhali womoya womoya, Esi sisixhobo esifana neebhasari ezisetyenziswa ngoogqirha bamazinyo. Ngayo, ungahlula iziqwenga zamatye aseleyo.
Emva koko, kusetyenziswa imichiza (B 72) ukubakhusela ekonakaleni okunokubangelwa ziiasidi. Kamva bacwilise kwizisombululo ezithile ezilawulwa kakuhle ukususa uqweqwe lomhlaba olungekho ngaphezulu kweemilimitha ezi-5.
Okokugqibela, izazinzulu banokuzifunda ngokucokisekileyoUkuchonga iintlobo zezendalo, iminyaka yobudala bayo, ubukhulu bayo, njl.
Lo ngumsebenzi kungathatha iiveki ezimbalwa ukuya kwiminyaka, ngokuxhomekeke kwifosili ekuthethwa ngayo. Nangona kunjalo, xa zigqityiwe, uninzi lwazo zisiwe kwiimyuziyam apho abantu abanjengawe nam banokuthi baye kuzo kwaye, mhlawumbi, bazithelekelele ngokwabo belusendle ngokwenyani nendalo.