Opinions from E. D. Cope 1884
- 'Adocus belongs to Adocidae'
- 'Agomphus belongs to Emydidae'
- 'Amphiemys belongs to Adocidae'
- 'Amyda [misspelled as Emyda] belongs to Trionychidae'
- 'Anosteira [misspelled as Anostira] belongs to Chelydridae'
- 'Anosteira ornata [misspelled as Anostira ornata] belongs to Anostira'
- 'Anosteira radulina [misspelled as Anostira radulina] belongs to Anostira'
- 'Anostira molopina is recombined as Plastomenus molopinus'
- 'Anostira oedemia is recombined as Plastomenus oedemius'
- 'Anostira trionychoides is recombined as Plastomenus trionychoides'
- 'Apholidemys belongs to Emydidae'
- 'Axestus belongs to Trionychidae'
- 'Axestus byssinus belongs to Axestus'
- 'Baena belongs to Baenidae'
- 'Baena arenosa belongs to Baena'
- 'Baena hebraica belongs to Baena'
- 'Baena ponderosa belongs to Baena'
- 'Baena undata belongs to Baena'
- 'Catapleura belongs to Propleuridae'
- 'Chelonia belongs to Cheloniidae'
- 'Chelydra belongs to Chelydridae'
- 'Claudius belongs to Chelydridae'
- 'Compsemys belongs to Emydidae'
- 'Dermatemys belongs to Emydidae'
- 'Emys belongs to Emydidae'
- 'Emys euthnetus is corrected as Emys euthneta and belongs to Emys'
- 'Emys haydeni belongs to Emys'
- 'Emys latilabiatus belongs to Emys'
- 'Emys megaulax belongs to Emys'
- 'Emys septarius is corrected as Emys septaria and belongs to Emys'
- 'Emys shaugnessiana is corrected as Emys shaughnessiana and belongs to Emys'
- 'Emys wyomingensis belongs to Emys'
- 'Hadrianus belongs to Testudinidae'
- 'Hadrianus allabiatus belongs to Hadrianus'
- 'Hadrianus octonarius belongs to Hadrianus'
- 'Homorophus [misspelled as Homorhophus] belongs to Adocidae'
- 'Hydropelta belongs to Chelydridae'
- 'Idiochelys belongs to Chelydridae'
- 'Lytoloma belongs to Propleuridae'
- 'Macrochelys belongs to Chelydridae'
- 'Manouria [misspelled as Manuria] belongs to Emydidae'
- 'Notomorpha gravis belongs to Notomorpha'
- 'Notomorpha testudinea is recombined as Emys testudinea'
- 'Osteopygis belongs to Propleuridae'
- 'Palaeotheca polycypha is recombined as Emys polycypha'
- 'Palaeotheca terrestris is recombined as Emys terrestris'
- 'Peritresius belongs to Propleuridae'
- 'Plastomenus multifoveatus belongs to Plastomenus'
- 'Platychelys belongs to Baenidae'
- 'Polythorax belongs to Baenidae'
- 'Propleura belongs to Propleuridae'
- 'Ptychogaster belongs to Emydidae'
- 'Puppigerus belongs to Cheloniidae'
- 'Stylemys belongs to Emydidae'
- 'Testudo belongs to Testudinidae'
- 'Testudo corsoni is recombined as Hadrianus corsoni'
- 'Trionyx concentricus belongs to Trionyx'
- 'Trionyx guttatus belongs to Trionyx'
- 'Trionyx heteroglyptus belongs to Trionyx'
- 'Trionyx radulus belongs to Trionyx'