Opinions from B. J. Mader 1998

  • 'Allops is a subjective synonym of Menops'
  • 'Allops crassicornis is recombined as Menops crassicornis'
  • 'Allops serotinus is recombined as Menops serotinus'
  • 'Allops walcotti is recombined as Menops walcotti'
  • 'Anisacodon montanus is a nomen dubium'
  • 'Brontops belongs to Brontotheridae'
  • 'Brontops dispar belongs to Brontops'
  • 'Brontops robustus belongs to Brontops'
  • 'Brontops validus is a subjective synonym of Brontops dispar'
  • 'Brontotheriinae belongs to Brontotheridae'
  • 'Brontotherium is a nomen dubium'
  • 'Brontotherium gigas is a nomen dubium'
  • 'Brontotherium hatcheri is recombined as Megacerops hatcheri'
  • 'Brontotherium ingens is a nomen dubium'
  • 'Brontotherium leidyi is a nomen dubium'
  • 'Canis marshii is a subjective synonym of Palaeosyops paludosus'
  • 'Diconodon is a nomen dubium'
  • 'Diploclonus is a subjective synonym of Brontops'
  • 'Diploclonus amplus is recombined as Brontops amplus'
  • 'Dolichorhinae belongs to Brontotheridae'
  • 'Dolichorhinus is a subjective synonym of Sphenocoelus'
  • 'Dolichorhinus belongs to Brontotheridae' according to Hatcher 1895
  • 'Dolichorhinus fluminalis is a subjective synonym of Sphenocoelus intermedius'
  • 'Dolichorhinus heterodon is a subjective synonym of Sphenocoelus intermedius'
  • 'Dolichorhinus heterodon belongs to Dolichorhinus' according to Douglass 1909
  • 'Dolichorhinus intermedius is recombined as Sphenocoelus intermedius'
  • 'Dolichorhinus longiceps is a subjective synonym of Sphenocoelus hyognathus'
  • 'Dolichorhinus longiceps belongs to Dolichorhinus' according to Douglass 1909
  • 'Duchesneodus belongs to Brontotheriinae'
  • 'Eometarhinus is a subjective synonym of Palaeosyops'
  • 'Eometarhinus huerfanensis is a subjective synonym of Palaeosyops fontinalis'
  • 'Eotitanops belongs to Brontotheridae'
  • 'Eotitanops gregoryi belongs to Eotitanops'
  • 'Eotitanops gregoryi is a subjective synonym of Palaeosyops borealis' according to Wallace 1980
  • 'Eotitanops gregoryi belongs to Eotitanops' according to Osborn 1913
  • 'Eotitanops major is a subjective synonym of Eotitanops borealis'
  • 'Eotitanops major belongs to Eotitanops' according to Osborn 1913
  • 'Eotitanops princeps is a subjective synonym of Eotitanops borealis'
  • 'Eotitanops princeps belongs to Eotitanops' according to Osborn 1913
  • 'Heterotitanops is a nomen dubium'
  • 'Heterotitanops parvus is a nomen dubium'
  • 'Lambdotherium belongs to Perissodactyla'
  • 'Lambdotherium brownianum is a subjective synonym of Eotitanops borealis'
  • 'Limnohyops is a subjective synonym of Palaeosyops'
  • 'Limnohyops matthewi is a subjective synonym of Palaeosyops paludosus'
  • 'Limnohyops monoconus is a subjective synonym of Palaeosyops paludosus'
  • 'Limnohyops priscus is a subjective synonym of Palaeosyops paludosus'
  • 'Limnohyus is a subjective synonym of Palaeosyops'
  • 'Limnohyus laevidens is a subjective synonym of Palaeosyops paludosus'
  • 'Limnohyus robustus is recombined as Palaeosyops robustus'
  • 'Megaceratops is a nomen dubium'
  • 'Megaceratops acer is a nomen dubium'
  • 'Megaceratops helocerus is recombined as Menops heloceras'
  • 'Megacerops belongs to Brontotheridae'
  • 'Megacerops assiniboiensis is a nomen dubium'
  • 'Megacerops bicornutus is recombined as Brontops bicornutus'
  • 'Megacerops brachycephalus is recombined as Brontops brachycephalus'
  • 'Megacerops marshi is recombined as Menops marshi'
  • 'Megacerops riggsi is a nomen dubium'
  • 'Megacerops tyleri is recombined as Brontops tyleri'
  • 'Menodus bakeri is recombined as Menops bakeri'
  • 'Menodus dolichoceras is a nomen dubium'
  • 'Menodus peltoceras is a subjective synonym of Megacerops curtus'
  • 'Menodus platyceras is recombined as Megacerops platyceras'
  • 'Menodus selwynianus is recombined as Brontops selwynianus'
  • 'Menodus tichoceras is a nomen dubium'
  • 'Menops belongs to Brontotheridae'
  • 'Menops varians belongs to Menops'
  • 'Mesatirhinus belongs to Dolichorhinae'
  • 'Mesatirhinus petersoni is a subjective synonym of Mesatirhinus megarhinus'
  • 'Mesatirhinus superior is a subjective synonym of Sphenocoelus intermedius'
  • 'Metarhinus belongs to Dolichorhinae'
  • 'Metarhinus riparius is a subjective synonym of Metarhinus fluviatilis'
  • 'Notiotitanops belongs to Brontotheridae'
  • 'Palaeosyopinae belongs to Brontotheridae'
  • 'Palaeosyops belongs to Palaeosyopinae'
  • 'Palaeosyops borealis is recombined as Eotitanops borealis'
  • 'Palaeosyops copei is a subjective synonym of Palaeosyops robustus'
  • 'Palaeosyops diaconus is a subjective synonym of Palaeosyops robustus'
  • 'Palaeosyops fontinalis belongs to Palaeosyops'
  • 'Palaeosyops grangeri is a subjective synonym of Palaeosyops robustus'
  • 'Palaeosyops humilis is a subjective synonym of Palaeosyops paludosus'
  • 'Palaeosyops hyognathus is recombined as Sphenocoelus hyognathus'
  • 'Palaeosyops junior is a nomen dubium'
  • 'Palaeosyops leidyi is a subjective synonym of Palaeosyops robustus'
  • 'Palaeosyops longirostris is a subjective synonym of Palaeosyops paludosus'
  • 'Palaeosyops major is a subjective synonym of Palaeosyops paludosus'
  • 'Palaeosyops megarhinus is recombined as Mesatirhinus megarhinus'
  • 'Palaeosyops paludosus belongs to Palaeosyops'
  • 'Menodus is a nomen dubium'
  • 'Palaeotherium giganteum is a nomen dubium'
  • 'Palaeotherium proutii is a nomen dubium'
  • 'Protitanops belongs to Brontotheriinae'
  • 'Rhadinorhinus is a subjective synonym of Metarhinus'
  • 'Rhadinorhinus abbotti is a subjective synonym of Metarhinus diploconus'
  • 'Sphenocoelus belongs to Dolichorhinae'
  • 'Symborodon is a nomen dubium'
  • 'Symborodon altirostris is a nomen dubium'
  • 'Symborodon bucco is a nomen dubium'
  • 'Symborodon copei is a nomen dubium'
  • 'Symborodon hypoceras is a nomen dubium'
  • 'Symborodon torvus is a nomen dubium'
  • 'Symborodon trigonoceras is recombined as Menops trigonoceras'
  • 'Tanyorhinus is a subjective synonym of Sphenocoelus'
  • 'Tanyorhinus blairi is recombined as Sphenocoelus blairi'
  • 'Tanyorhinus bridgeri is recombined as Sphenocoelus bridgeri'
  • 'Tanyorhinus harundivorax is recombined as Sphenocoelus harundivorax'
  • 'Telmatherium belongs to Brontotheriinae'
  • 'Telmatherium incisivum is recombined as Sthenodectes incisivum'
  • 'Telmatotherium cornutum is a subjective synonym of Sphenocoelus hyognathus'
  • 'Telmatotherium diploconum is recombined as Metarhinus diploconus'
  • 'Titanops is a subjective synonym of Megacerops'
  • 'Titanops curtus is recombined as Megacerops curtus'
  • 'Titanops elatus is a nomen dubium'
  • 'Titanops medius is a nomen dubium'
  • 'Titanotheriidae is a subjective synonym of Brontotheridae'
  • 'Titanotherium is a nomen dubium'