Ka taƙaita labarin:  Brontosaurus ya sake dawowa bayan da masana kimiyya suka kore shi. Dinosaur mai dogon wuyansa yana daya daga cikin manyan dabbobi da suka taɓa tafiya a duniya tare da gadonsa da ke jan hankalin yara a duk duniya. Amma duk da cewa 'guguwar tsawa' tana da tushe sosai a al'adun mutane, fiye da ƙarni ɗaya masana kimiyya sun gaskata cewa wannan sanannen dinosaur bai taɓa wanzuwa ba. Babban dinosaur da sunansa mai ma'ana - ma'ana 'zakarin tsawa' - ya burge tsararraki na matasa.Amma tun 1903, masana sun yi imanin cewa asalin halittar ba daidai ba ne. Hoton da aka nuna shi ne Brontosaurus kamar yadda masu bincike suka gani a yau - tare da shugaban Diplodocus. Masu binciken sun duba fasali 477 na jiki a cikin mutum 81 na dinosaur da aka samo a gidajen tarihi a duk faɗin Turai da Amurka. Maimakon hanyar gargajiya ta zana yadda kowane nau'in ya yi kama da sauran, maimakon haka sun yi amfani da'shirin da aka kafa a kan samfurin'. Wannan yana nufin za su iya nazarin kowane dabba, duk da jinsinta, kuma ya ba su damar duba bambance-bambance a cikin kowane nau'in, da kuma tsakanin nau'o'in daban-daban. Babban siffar itacen ya goyi bayan abin da wasu masana kimiyyar halittu suka gabatar a baya. Amma burbushin da aka lakafta Brontosaurus da farko sun bambanta da nau'ikan Apatosaurus guda biyu. Yawancin bambance-bambance sun kasance a cikin ƙananan siffofi na anatomical, amma wani nau'i na musamman shi ne cewa Apatosaurus yana da wuyansa fiye da Brontosaurus. Tun 1903, masana sun yi jayayya cewa halittar an kira shi ba daidai ba. Maimakon kasancewa cikin jinsin, ko nau'in 'iyali' Brontosaurus, sun ce a zahiri ya kamata a rarraba shi a matsayin 'Apatosaurus'. Yanzu sabon bincike ya nuna cewa, bayan duk, ya bambanta sosai da Apatosaurus don ya cancanci sunan jinsin kansa. Masana kimiyya daga Burtaniya da Fotigal sun gabatar da hujjoji don tayar da Brontosaurus a cikin binciken kusan shafuka 300 da aka buga a cikin mujallar buɗewa ta PeerJ. 'Bambance-bambance da muka samu tsakanin Brontosaurus da Apatosaurus sun kasance aƙalla kamar waɗanda suke da yawa...
Tun 1903, masana kimiyya suna da'awar cewa Brontosaurus bai wanzu ba. Sun ce ya kamata a sanya shahararren jinsin a matsayin Apatosaurus. Sabon binciken ya lissafa bambance-bambance tsakanin iyalan Diplodocid. Brontosaurus yana da wuyan wuyan wuyansa da ƙananan ƙashin ƙashi.