Opinions from G. G. Simpson 1946
- 'Anthropornis belongs to Anthropornithinae'
- 'Anthropornis nordenskjoldii belongs to Anthropornis'
- 'Anthropornithinae belongs to Spheniscidae'
- 'Aptenodytes belongs to Spheniscinae'
- 'Apterodytes belongs to Spheniscidae'
- 'Apterodytes ictus belongs to Apterodytes' according to Ameghino 1901
- 'Apterodytes ictus belongs to Apterodytes'
- 'Argyrodyptes belongs to Aves'
- 'Argyrodyptes microtarsus belongs to Argyrodyptes'
- 'Arthrodytes belongs to Anthropornithinae'
- 'Cladornis is a nomen dubium'
- 'Cladornis pachypus belongs to Cladornis'
- 'Cruschedula is a nomen dubium'
- 'Cruschedula revola belongs to Cruschedula'
- 'Delphinornis belongs to Anthropornithinae'
- 'Delphinornis larsenii belongs to Delphinornis'
- 'Eosphaeniscus belongs to Anthropornithinae'
- 'Eosphaeniscus gunnari belongs to Eosphaeniscus'
- 'Eudyptes belongs to Spheniscinae'
- 'Eudyptula belongs to Spheniscinae'
- 'Ichtyopteryx is corrected as Ichthyopteryx and belongs to Spheniscidae'
- 'Ichtyopteryx gracilis is recombined as Ichthyopteryx gracilis'
- 'Isotremornis belongs to Paraptenodytinae'
- 'Megadyptes belongs to Spheniscinae'
- 'Metancylornis belongs to Paraptenodytinae'
- 'Neculus belongs to Spheniscidae'
- 'Neculus rothi belongs to Neculus'
- 'Pachydyptes belongs to Anthropornithinae'
- 'Pachydyptes novaezealandiae belongs to Pachydyptes'
- 'Pachydyptes ponderosus belongs to Pachydyptes'
- 'Pachypteryx belongs to Spheniscidae'
- 'Pachypteryx grandis belongs to Pachypteryx'
- 'Palaeeudyptes belongs to Palaeeudyptinae'
- 'Palaeeudyptes antarcticus belongs to Palaeeudyptes'
- 'Palaeeudyptinae belongs to Spheniscidae'
- 'Palaeospheniscinae belongs to Spheniscidae'
- 'Palaeospheniscus belongs to Palaeospheniscinae'
- 'Palaeospheniscus affinis belongs to Palaeospheniscus'
- 'Palaeospheniscus antarcticus is recombined as Paraptenodytes antarcticus'
- 'Palaeospheniscus bergi is recombined as Paraspheniscus bergi'
- 'Palaeospheniscus gracilis belongs to Palaeospheniscus'
- 'Palaeospheniscus intermedius belongs to Palaeospheniscus'
- 'Palaeospheniscus interruptus belongs to Palaeospheniscus'
- 'Palaeospheniscus medianus belongs to Palaeospheniscus'
- 'Palaeospheniscus menzbieri belongs to Palaeospheniscus'
- 'Palaeospheniscus nereius is recombined as Paraspheniscus nereius'
- 'Palaeospheniscus patagonicus belongs to Palaeospheniscus'
- 'Palaeospheniscus planus belongs to Palaeospheniscus'
- 'Palaeospheniscus robustus belongs to Palaeospheniscus'
- 'Palaeospheniscus rothi belongs to Palaeospheniscus'
- 'Paraptenodytes belongs to Paraptenodytinae'
- 'Paraptenodytes andrewsi is recombined as Arthrodytes andrewsi'
- 'Paraptenodytes curtus is recombined as Metancylornis curtus'
- 'Paraptenodytes grandis is recombined as Arthrodytes grandis'
- 'Paraptenodytinae belongs to Spheniscidae'
- 'Paraspheniscus belongs to Palaeospheniscinae'
- 'Perispheniscus belongs to Palaeospheniscinae'
- 'Perispheniscus wimani belongs to Perispheniscus'
- 'Pseudospheniscus belongs to Spheniscidae'
- 'Pseudospheniscus concavus belongs to Pseudospheniscus'
- 'Pygoscelis belongs to Spheniscinae'
- 'Spheniscinae belongs to Spheniscidae'
- 'Spheniscus belongs to Spheniscinae'
- 'Treleudytes belongs to Spheniscidae'
- 'Treleudytes crassa is corrected as Treleudytes crassus and belongs to Treleudytes'