†family Brontotheriidae Marsh 1873 (brontothere)
Synonym: Titanotheriidae
Parent taxon: Titanotheriomorpha according to J. J. Hooker and D. Dashzeveg 2004
Sister taxa: none
Subtaxa: Acrotitan, Arctotitan, Balochititanops, Brachydiastematherium, Brontops, Brontotheriinae, Desmatotitan, Dianotitan, Dolichorhininae, Dolichorhinoides, Embolotheriinae, Eotitanopinae, Eotitanops, Eotitanotherium, Epimanteoceras, Gnathotitan, Hyotitan, Lambdotherium, Megacerops, Menops, Metatelmatherium, Metatitan, Microtitan, Mulkrajanops, Nanotitanops, Notiotitanops, Pachytitan, Pakotitanops, Palaeosyopinae, Parabrontops, Protembolotherium, Protitan, Protitanotherium, Pseudodiplacodon, Rhinotitan, Sivatitanops, Sthenodectes, Titanodectes
Ecology: ground dwelling browser