(1) Synonymy of polygastric stage:
Diphyes appendicularia | Eschscholz, 1892
Diphyes elongata | Hyndman, 1841
Diphyes sieboldii | Kölliker, 1853
Diphyes acuminata | Leuckart, 1953
Diphyes gracilis | Gegenbaur, 1854
Diphyes bipartita | Costa, 1836
Diphyes elongata | Haeckel, 1888
Chelophyes appendiculata | Totton, 1932
(2) Synonymy of eudoxid stage:
Eudoxia campanula | Leuckart, 1853
Eudioxia messanensis | Gegenbaur, 1854
Eudoxoides sagittata | Huxley, 1859
Eudoxia russelli | Totton, 1932
Chelophyes appendiculata | Totton, 1956