Kusan dukkan kashin baya masu rai suna hayayyafa ta hanyar haihuwa.soya yi dinosaurs.Halin jima'i na dabbobi masu rai yawanci suna da bayyananniyar bayyanar waje, don haka yana da sauƙin rarrabe maza da mata.Misali, dawisu maza suna da gashin fuka-fukan wutsiya masu ban sha'awa, zakuna maza suna da dogayen maniyyi, mazan dawakai kuma suna da kaho kuma sun fi mata girma.A matsayin dabbar Mesozoic, an binne kasusuwan dinosaurkarkashinƙasa na dubban miliyoyin shekaru, da kuma laushi masu laushiwandana iya nuna jinsina dinosaursun bace, don haka gaskiya newuyadon bambanta jinsi na dinosaur!Yawancin burbushin da aka samu kashi nes, kuma kaɗan ne kawai za a iya adana ƙwayar tsoka da abubuwan da aka samo asali.To ta yaya zamu yi hukunci akan jinsin dinosaur daga waɗannan burbushin?
Magana ta farko ta dogara ne akan ko akwai kashi medullary.A lokacin da Mary Schweitzer, masanin burbushin halittu a Jami'ar North Carolina ta Amurka, ta gudanar da bincike mai zurfi kan "Bob" (kasusuwan burbushin tyrannosaur), ta gano cewa akwai wani kasusuwa na musamman a cikin kasusuwan burbushin, wanda suka kira. kashin kasusuwa.Layin kasusuwan kasusuwa yana fitowa ne a lokacin haihuwa da lokacin kwanciya na tsuntsayen mata, kuma galibi yana samar da sinadarin calcium ga qwai.An kuma ga irin wannan yanayin a cikin dinosaur da yawa, kuma masu bincike za su iya yanke hukunci game da jima'i na dinosaur.A cikin binciken, femur wannan burbushin dinosaur ya zama wani muhimmin abu wajen gano jinsin dinosaur, kuma shi ne kashi mafi sauki wajen gano jinsi.Idan an sami wani nau'in nama na kasusuwan kasusuwa a kusa da rami mai zurfi na kashin dinosaur, ana iya tabbatar da cewa wannan dinosaur din mace ce a lokacin kwanciya.Amma wannan hanya ta dace ne kawai ga dinosaur da ke tashi sama da dinosaur waɗanda ke shirye don haihuwa ko kuma sun haihu, kuma ba za su iya tantance dinosaur da ba su da ciki.
Na biyusanarwa shine don bambanta dangane da kullun dinosaur.Masana ilimin tarihi sun taɓa tunanin hakajinsi za a iya bambanta ta da crests na dinosaur, hanyar da ta dace musamman ga Hadrosaurus.A cewar hukumargirmanna sparseness da matsayin "kambi" naHadrosaurus, ana iya bambanta jinsi.Amma sanannen masanin burbushin halittu Milner ya musanta hakan, Hukumar Lafiya ta Duniyasaid, "Akwai bambance-bambance a cikin rawanin wasu nau'in dinosaur, amma ana iya yin hasashe da hasashe kawai."Duk dasu sake bambance-bambancetsakanin Dinosaur crests, masana sun kasa bayyana irin nau'in crest na namiji da wanda mace ce.
Magana ta uku ita ce yin hukunci bisa tsarin jiki na musamman.Tushen shi ne, a cikin dabbobi masu shayarwa da dabbobi masu rarrafe, namiji yakan yi amfani da tsarin jiki na musamman don jawo hankalin mata.Misali, hancin biri proboscis ana daukarsa a matsayin kayan aiki da maza ke amfani da su don jawo hankalin mata.Ana tsammanin za a yi amfani da wasu gine-gine na dinosaur don jawo hankalin matan.Misali, hancin kashin Tsingosaurus spinorhinus da kambi na Guanlong wucaii na iya zama makamin sihiri da maza ke amfani da shi don jan hankalin mata.Duk da haka, babu isassun burbushin da za su tabbatar da hakan tukuna.
Magana ta hudu ita ce yin hukunci da girman jiki.Dinosaurs manya masu ƙarfi na nau'in nau'in iri ɗaya na iya zama maza.Misali, kwanyar Pachycephalosaurus na namiji kamar sun fi na mata nauyi.Amma wani binciken da ya kalubalanci wannan magana, yana nuna bambancin jima'i a wasu nau'in dinosaur, musamman Tyrannosaurus rex, ya haifar da babban ra'ayi a cikin jama'a.Shekaru da yawa da suka wuce, wata takarda bincike ta yi iƙirarin cewa T-rex mace ta fi girma T-rex na namiji.Koyaya, wannan ya dogara ne akan samfuran kwarangwal guda 25 da basu cika ba.Muna buƙatar ƙarin kashi don cikakken nazarin halayen jima'i na dinosaur.
Yana da matukar wahala a iya tantance jinsin dabbobin da suka mutu a zamanin da ta hanyar burbushin halittu, amma binciken da suke yi ya fi amfani ga masana kimiyyar zamani kuma yana da tasiri mai mahimmanci a kan dabi’un dinosaur.Duk da haka, akwai misalai kaɗan a duniya waɗanda za su iya yin nazari daidai game da jinsin dinosaur, kuma akwai masu binciken kimiyya kaɗan a fannonin da ke da alaƙa.
Kawah Dinosaur Official Website:www.kawahdinosaur.com
Lokacin aikawa: Fabrairu-16-2020