| regnum = Animalia | phylum = Chordata | classis = Sauropsida | superordo = Dinosauria | ordo = Saurischia | subordo = Sauropodomorpha | familia = Diplodocidae | subfamilia = Diplodocinae | genus = Barosaurus | genus_authority = Marsh, 1890 | subdivision_ranks = Species | subdivision = B. lentus Marsh, 1890 (type) B. africanus (Fraas, 1908) B. gracilis (Janensch, 1961) | synonyms = Tornieria? Sternfeld, 1911 }} Barosaurus (; meaning 'heavy lizard' (Greek barys/βαρυς me… (More on Barosaurus)