Majungasaurus na-ekewa dị ka onye so na theropod clade Abelisauridae, nke a na-ewere dị ka ezinụlọ na Linnaean taxonomy. Tinyere ezinụlọ Noasauridae, abelisaurids na-agụnye na superfamily Abelisauroidea, nke bụ nke ọzọ a subdivision nke infraorder Ceratosauria. Abelisaurids mara maka ha ogologo okpokoro isi na blunt snouts, ọtụtụ sculpturing na mpụga n'elu nke ihu ọkpụkpụ (convergent na carcharodontosaurids), nnọọ belata (atrophied) forelimbs (convergent na tyrannosaurids), na stocky hindlimbs, n'etiti ndị ọzọ atụmatụ. Dị ka ọtụtụ dinosaur ezinụlọ, na systematic (evolutionary) mmekọrịta n'ime ezinụlọ Abelisauridae. Ọtụtụ ọmụmụ gosiri na ọtụtụ cladriest shares a close relationship with Cardiosaurus, na-eji ihe ndị ọzọ na-abụghị Cardiosaurus, ma na-emeghe nke ọma, na-eji ohere dị iche iche iche dị ka Cardiosaurus na ndị ọzọ, dị ka Cardiosaurus na
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