Xa sithetha ngeedayinaso, imifanekiso efika engqondweni yethu zezo zidalwa zinkulu: iTyrannosaurus rex enomlomo obanzi, i-agile velociraptor, kunye neenkosana ezinkulu ezinentamo ende ezazibonakala ngathi zifikelela esibhakabhakeni. Zibonakala ngathi azinanto ifanayo nezilwanyana zanamhlanje, akunjalo?
Kodwa ukuba bendingakuxelela ukuba iidayinaso azizange ziphele ngokupheleleyo—kwaye zibonakala nasekhitshini lakho yonke imihla—ungacinga ukuba ndiyadlala.
Ukholelwe okanye ungakholwa, isilwanyana esisondeleyo ngokwemfuza kwiidayinaso...inkukhu!
Musa ukuhleka—oku akusiyonto yokuhlekisa, kodwa luphando oluqinileyo lwenzululwazi. Izazinzulu zikhuphe iiproteni ze-collagen ezincinci kwi-T. rex fossils ezigcinwe kakuhle zaza zathelekisa nezilwanyana zanamhlanje. Isiphumo esimangalisayo:
Ulandelelwano lweproteni yeTyrannosaurus rex lusondele kakhulu kolwenkukhu, lulandelwa yinciniba kunye nengwenya.
Ithetha ntoni le nto?
Kuthetha ukuba inkukhu oyityayo yonke imihla ngokusisiseko "yidayinaso encinci eneentsiba."
Akumangalisi ukuba abanye abantu bathi inkukhu eqhotsiweyo isenokuba yiloo nto iidinosaur zazinambitheka ngayo—ivumba elimnandi ngakumbi, liqabile, kwaye kulula ukulihlafuna.
Kodwa kutheni iinkuku, kungekhona iingwenya, ezibonakala ngathi ziidayinaso?
Isizathu silula:
* Iintaka azizizo izalamane ezikude zeedayinaso; ziyinzala ethe ngqo yeedayinaso ze-theropod, iqela elifanayo neleevelociraptors kunye ne-T. rex.
* Iingwenya, nangona zindala, “zizalana ezikude” needayinaso.
Okubangela umdla nangakumbi kukuba, iifosili ezininzi zeedinosaur zibonisa imifanekiso yeentsiba. Oku kuthetha ukuba iidinosaur ezininzi zisenokuba zazifana kakhulu neenkukhu ezinkulu kunokuba besicinga!
Ngoko ke kwixesha elizayo xa uza kutya isidlo esithile, ungathi ngokuhlekisayo, “Nditya imilenze yeedayinaso namhlanje.”
Kuvakala ngathi kuyinto engenangqondo, kodwa kuyinyani ngokwesayensi.
Nangona iidinosaur zashiya uMhlaba kwiminyaka engama-65 yezigidi eyadlulayo, zisaqhubeka zikhona ngendlela eyahlukileyo—zibaleka zijikeleza yonke indawo njengeentaka, kwaye zibonakala etafileni zokutyela njengeenkukhu.
Ngamanye amaxesha, isayensi inamandla ngaphezu kwamahlaya.
IWebhusayithi esemthethweni ye-Kawah Dinosaur:www.kawahdinosaur.com