Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Dangane da binciken microtomography na abubuwan kwanyar na samfurin holotype, Sereno da abokan aiki sun kirkiro "samfurin" Nigersaurus kwanyar da zasu iya bincika. Sun kuma zana hoton ƙwaƙwalwar kuma suka bincika ƙofofin da ke cikin kunnensa na ciki, kuma suka ga cewa an kafa su a kwance. A cikin binciken su na 2007, sun bayyana cewa tsarin occiput da cervical vertebrae zai iyakance motsi sama da ƙasa na wuyansa da juyawar kwanyar. Dangane da wannan binciken na ilimin kimiyyar lissafi, ƙungiyar ta yanke shawarar cewa kai da bakin suna da al'ada 67 ° ƙasa da kusa da matakin ƙasa, a matsayin daidaitawa don bincika matakin ƙasa. Wannan ya bambanta da yadda aka mayar da wasu sauropods, tare da kawunansu da aka yi a kwance. Wani binciken 2009 da masana kimiyyar halittu Mike P. Taylor, Mathew Wedel, da Darren Naish suka yarda cewa Nigersaurus ya iya ciyarwa tare da kai da wuyansa da aka gabatar a cikin binciken 2007, amma ya ƙaryata cewa wannan shi ne yanayin da dabba ta saba. Binciken ya lura cewa matsayin kai da wuyan dabbobi na zamani ba lallai ba ne ya dace da matsayin kawunansu na yau da kullun. Ya kuma yi jayayya cewa yanayin tashoshin semicircular ya bambanta sosai a cikin jinsunan zamani, sabili da haka ba abin dogaro ba ne don ƙayyade matsayin kai. Wannan ya sami goyon bayan masanin ilimin halittu na Mutanen Espanya Jesús Marugán-Lobón da abokan aiki a cikin wani binciken 2013 wanda ya nuna cewa hanyoyin da ƙungiyar Sereno ta yi amfani da su ba daidai ba ne, kuma cewa Nigersaurus ya saba da kansa kamar sauran sauropods.  Tambaya: Menene binciken ya ƙayyade zai iyakance wasu ƙungiyoyi na wuyansa da juyawa na kwanyar?
tsarin occiput da kuma cervical vertebrae