After Paul, 1988, McIntosh, 1990, and Upchurch, 1998

<==o †Brachiosauridae Riggs, 1903a (brachiosaurs; brakiosaurit, käsivarsisaurit, mammuttisaurit)
   |?- †Brachiosauridae genera et species indet. [KS 7002] [“unnamed brachiosaur from South Korea”]
   |?- †“Cetiosaurus” humerocristatus Hulke, 1874
   |?- †Daanosaurus zhangi Ye, Gao & Jiang, 2005
   |?- †Ischyrosaurus manseli (Hulke [ex Lydekker, 1888b]) [Ornithopsis manseli Hulke (ex Lydekker, 1888b)]
   |?- †“Ornithopsis” leedsi Hulke, 1887
   |?- †Sonorasaurus thompsoni Ratkevich, 1998
   |?-o †Pelorosaurus Mantell, 1850 [taxonomic history]
   |  |-- †P. conybaeri (Melville, 1949) [taxonomic history]
   |  `-- †P. mackesoni (Owen, 1884) [taxonomic history]
   |?-o †Pleurocoelus Marsh, 1888a [?Astrodon Johnston, 1859]
   |  |?- †P. nanus Marsh, 1888a
   |  |-- †P. altus Marsh, 1888a [?Astrodon johnstoni Leidy, 1865]
   |  `-- †P. valdensis Lydekker, 1889e
   |?-o †Bothriospondylus Owen, 1875 [Marmarospondylus Owen, 1975]
   |  |-- †B. suffosus Owen, 1875
   |  |-- †B. robustus Owen, 1875 [Marmarospondylus robustus Owen, 1875]
   |  `-- †B. madagascariensis Lydekker, 1895
   `--+-- †Giraffatitan brancai (Janensch, 1914) Paul, 1988 [Brachiosaurus brancai Janensch, 1914, Brachiosaurus fraasi Janensch, 1914]
      `--+-- †Sauroposeidon proteles  Wadel, Cifelli & Sanders, 2000
         |-- †Lusotitan atalaiensis (Lapparent & Zbyszewski, 1957) Antunes & Mateus, 2003 [Brachiosaurus atalaiensis Lapparent & Zbyszewski, 1957]
         `--o †Brachiosaurus Riggs, 1903a
            |-- †B. altithorax Riggs, 1903a
            `-- †B. nougaredi Lapparent, 1960a

Reference(s):