Opinions from J. H. Quinn 1955

  • 'Anchitheridae was reranked as the subfamily Anchitheriinae and belongs to Equidae'
  • 'Anchitherium ultimum is recombined as Archaeohippus ultimus'
  • 'Archaeohippus belongs to Anchitheriinae'
  • 'Asinus belongs to Equini'
  • 'Astrohippus curtivallis belongs to Astrohippus'
  • 'Calippini belongs to Equinae'
  • 'Calippus anatinus belongs to Calippus'
  • 'Calippus martini is recombined as Protohippus martini'
  • 'Calippus optimus belongs to Calippus'
  • 'Dinohippus belongs to Equini'
  • 'Dinohippus subvenus belongs to Dinohippus'
  • 'Eoequus belongs to Equini'
  • 'Eoequus wilsoni belongs to Eoequus'
  • 'Equidae belongs to Perissodactyla'
  • 'Equinae belongs to Equidae'
  • 'Equini belongs to Equinae'
  • 'Equus belongs to Equini'
  • 'Equus (Protohippus) was reranked as Protohippus and belongs to Protohippini'
  • 'Equus (Protohippus) perditus is recombined as Protohippus perditus'
  • 'Equus burchelli is recombined as Hippotigris burchelli'
  • 'Equus caballus belongs to Equus'
  • 'Equus capensis belongs to Equus' according to Broom 1909
  • 'Equus capensis is recombined as Hippotigris capensis'
  • 'Equus cumminsii is recombined as Asinus cumminsii'
  • 'Equus francisci is recombined as Asinus francisci'
  • 'Equus laparensis belongs to Equus'
  • 'Equus simplicidens is recombined as Hippotigris simplicidens'
  • 'Equus zebra is recombined as Hippotigris zebra'
  • 'Griphippus belongs to Calippini'
  • 'Hipparion belongs to Hipparionini'
  • 'Hipparion (Nannippus) was reranked as Nannippus and belongs to Hipparionini'
  • 'Hipparion gratum is recombined as Griphippus gratus'
  • 'Hipparionini belongs to Equinae'
  • 'Hippidium interpolatum is recombined as Dinohippus interpolatus'
  • 'Hippidium spectans is recombined as Pliohippus spectans'
  • 'Hippodon belongs to Protohippini'
  • 'Hippodon speciosus belongs to Hippodon'
  • 'Hippotigris belongs to Equini'
  • 'Hippotigris clarendonensis belongs to Hippotigris'
  • 'Hippotigris grevyi belongs to Hippotigris' according to Oustalet 1882
  • 'Hippotigris grevyi belongs to Hippotigris'
  • 'Hippotigris parastylus belongs to Hippotigris'
  • 'Hippotigris robustus belongs to Hippotigris' according to Pomel 1853
  • 'Hippotigris robustus belongs to Hippotigris'
  • 'Hippotigris sellardsi belongs to Hippotigris'
  • 'Hippotigris stenonis belongs to Hippotigris' according to Cocchi 1867
  • 'Hippotigris stenonis belongs to Hippotigris'
  • 'Merychippus belongs to Hipparionini'
  • 'Merychippus francisi is recombined as Calippus francisi'
  • 'Merychippus gunteri is recombined as Hippodon gunteri'
  • 'Merychippus intermontanus is recombined as Pliohippus intermontanus'
  • 'Merychippus mirabilis is recombined as Pliohippus mirabilis'
  • 'Merychippus vellicans is recombined as Hippodon vellicans'
  • 'Miohippus blackbergi is recombined as Archaeohippus blackbergi'
  • 'Neohipparion belongs to Hipparionini'
  • 'Parahippus barbouri is recombined as Hippodon barbouri'
  • 'Parahippus leonensis is recombined as Hippodon leonensis'
  • 'Plesippus shoshonensis is recombined as Hippotigris shoshonensis'
  • 'Pliohippus belongs to Protohippini'
  • 'Pliohippus (Astrohippus) was reranked as Astrohippus and belongs to Calippini'
  • 'Pliohippus (Astrohippus) stockii is recombined as Astrohippus stockii'
  • 'Pliohippus (Pliohippus) mexicanus is recombined as Asinus mexicanus'
  • 'Pliohippus circulus belongs to Pliohippus'
  • 'Pliohippus leardi belongs to Pliohippus'
  • 'Pliohippus leidyanus is recombined as Dinohippus leidyanus'
  • 'Pliohippus osborni is recombined as Hippotigris osborni'
  • 'Pliohippus pernix belongs to Pliohippus'
  • 'Protohippini belongs to Equinae'
  • 'Protohippus (Calippus) was reranked as Calippus and belongs to Calippini'
  • 'Protohippus ansae is recombined as Astrohippus ansae'
  • 'Protohippus placidus is recombined as Calippus placidus'
  • 'Protohippus supremus is recombined as Pliohippus supremus'
  • 'Protohippus vetus belongs to Protohippus'