Nigute ushobora kumenya igitsina cya dinosaurs?

Hafi yintegamubiri nzima zororoka binyuze mu myororokere,soyakoze dinosaurs. Ibiranga igitsina byinyamaswa nzima mubisanzwe bigaragara hanze, biroroshye rero gutandukanya igitsina gabo nigitsina gore. Kurugero, impyisi zabagabo zifite amababa meza yumurizo, intare zumugabo zifite manes ndende, naho inkokora yumugabo ifite amahembe kandi nini kuruta igitsina gore. Nka nyamaswa ya Mesozoic, amagufwa ya dinosaurs yarashyinguwemunsiubutaka kumyaka miriyoni mirongo, hamwe nuduce tworoshyeikabairashobora kwerekana igitsinaya dinosaursyazimiye, ni ukuri rwosebiragoyegutandukanya igitsina cya dinosaurs! Ibyinshi mu bisigazwa byabonetse ni amagufwas, kandi imitsi mike cyane nibikomoka ku ruhu birashobora kubikwa. Nigute dushobora gucira urubanza igitsina cya dinosaurs duhereye kuri ibyo bisigazwa?

Ijambo rya mbere rishingiye ku kumenya niba hari amagufwa ya medullary. Igihe Mary Schweitzer, inzobere mu bya paleontologiya muri kaminuza ya Carolina y'Amajyaruguru muri Amerika, yakoraga isesengura ryimbitse kuri “Bob” (tyrannosaur fossil), yasanze hari amagufwa adasanzwe mu magufwa y’ibimera, bise igufwa ry'amagufwa. Amagufwa ya magufa agaragara mugihe cyimyororokere no gutera inyoni z’igitsina gore, kandi ahanini zitanga calcium yamagi. Ibintu nk'ibi byagaragaye no muri dinosaur nyinshi, kandi abashakashatsi barashobora guca imanza zerekeye igitsina cya dinosaur. Mu bushakashatsi bwakozwe, igitsina gore cy’ibimera bya dinosaur cyabaye ikintu cyingenzi mu kumenya igitsina cya dinosaur, kandi n’amagufwa yoroshye kumenya igitsina. Niba urwego rwimitsi yamagufwa yabonetse hafi yubuvumo bwa medullary yamagufwa ya dinosaur, birashobora kwemezwa ko iyi ari dinosaur yumugore mugihe cyo gutera. Ariko ubu buryo bubereye gusa kuguruka dinosaur na dinosaurs byiteguye kubyara cyangwa kubyara, kandi ntibishobora kumenya dinosaur idatwite.

Iya kabiriitangazo ni ugutandukanya ukurikije icyerekezo cya dinosaurs. Abacukuzi b'ivya kera barigeze kubitekerezauburinganire yashoboraga gutandukanywa nigitereko cya dinosaurs, uburyo bwari bubereye cyane Hadrosaurus. Ukurikije Uwitekaurugeroby'ubuke n'umwanya wa “ikamba”YaHadrosaurus, igitsina kirashobora gutandukanywa. Ariko icyamamare paleontologue Milner arabihakana, ndesaid, “Hariho itandukaniro mu ikamba ry'ubwoko bumwebumwe bwa dinosaur, ariko ibi birashobora gutekerezwa gusa no gushidikanywaho.” Nubwore itandukanirohagati dinosaur crests, abahanga ntibashoboye kumenya ibiranga crest nibigabo nabagore.

Ijambo rya gatatu nugucira imanza zishingiye kumiterere yihariye yumubiri. Ishingiro ni uko mu nyamaswa z’inyamabere n’ibikururuka, ubusanzwe abagabo bakoresha imiterere yihariye yumubiri kugirango bakurure igitsina gore. Kurugero, izuru ryinguge ya proboscis ifatwa nkigikoresho gikoreshwa nigitsina gabo kugirango gikurura igitsina gore. Inzego zimwe za dinosaur zitekerezwa gukoreshwa mugukurura igitsina gore. Kurugero, izuru ryizunguruka rya Tsintaosaurus spinorhinus hamwe nikamba rya Guanlong wucaii rishobora kuba intwaro yubumaji ikoreshwa nabagabo mu gukurura igitsina gore. Ariko, ntihaboneka ibisigazwa bihagije byemeza ibi.

Ijambo rya kane ni ugucira urubanza ubunini bw'umubiri. Diniosaurs ikuze ikomeye yubwoko bumwe irashobora kuba igitsina gabo. Kurugero, ibihanga byumugabo Pachycephalosaurus bisa nkibiremereye kuruta iby'igitsina gore. Ariko ubushakashatsi bwamaganye aya magambo, bwerekana itandukaniro rishingiye ku gitsina mu moko amwe n'amwe ya dinosaur, cyane cyane rex ya Tyrannosaurus, byatumye abantu babogama mu bwenge. Imyaka myinshi ishize, inyandiko yubushakashatsi yavugaga ko T-rex yumugore nini kuruta T-rex yumugabo. Ariko, ibi byari bishingiye gusa kuri 25 skeleton ituzuye. Dukeneye amagufwa menshi kugirango dusesengure neza ibiranga igitsina cya dinosaur.

Biragoye cyane kumenya igitsina cy’inyamaswa zazimye mu bihe bya kera binyuze mu myanda y’ibinyabuzima, ariko ubushakashatsi bwabo bugirira akamaro abahanga mu bya none kandi bugira uruhare runini ku mibereho ya dinosaur. Nyamara, hariho ingero nke cyane kwisi zishobora kwiga neza igitsina cya dinosaur, kandi hariho abashakashatsi ba siyansi bake mubice bifitanye isano.

Kawah Dinosaur Urubuga rwemewe:www.kawahdinosaur.com