Aaptoryctes Gingerich, 1982 † (basis of record)
Aaptoryctes Gingerich, 1982 † (extant flag source)
Abalosia Reig & Quintana, 1991 † (basis of record)
Abalosia Reig & Quintana, 1991 † (extant flag source)
Abderites Ameghino, 1887 † (basis of record)
Abderites Ameghino, 1887 † (extant flag source)
Abditomys Musser, 1982 (extant flag source)
Abditomys Musser, 1982 (basis of record)
Abelia Kretzoi, 1938 † (basis of record)
Abelia Kretzoi, 1938 † (extant flag source)
Abelmoschomys Baskin, 1986 † (basis of record)
Abelmoschomys Baskin, 1986 † (extant flag source)
Abelodon Brunet, Coppens, Dejax, Flynn et al., 1990 † (extant flag source)
Abelodon Brunet, Coppens, Dejax, Flynn et al., 1990 † (basis of record)
Aboletylestes Russell, 1964 † (basis of record)
Aboletylestes Russell, 1964 † (extant flag source)
Abrawayaomys Cunha & Cruz, 1979 (basis of record)
Abrawayaomys Cunha & Cruz, 1979 (extant flag source)
Abrocoma Waterhouse, 1837 (basis of record)
Abrocoma Waterhouse, 1837 (extant flag source)
Abrosomys Shevyreva, 1984 † (basis of record)
Abrosomys Shevyreva, 1984 † (extant flag source)
Abrothrix Waterhouse, 1837 (basis of record)
Abrothrix Waterhouse, 1837 (extant flag source)
Absarokius Matthew, 1915 † (basis of record)
Absarokius Matthew, 1915 † (extant flag source)
Abudhabia de Bruijn & Whybrow, 1994 † (basis of record)
Abudhabia de Bruijn & Whybrow, 1994 † (extant flag source)
Acamana Simpson, Minoprio & Patterson, 1962 † (basis of record)
Acamana Simpson, Minoprio & Patterson, 1962 † (extant flag source)
Acantharodeia Rovereto, 1914 † (basis of record)
Acantharodeia Rovereto, 1914 † (extant flag source)
Acanthoglossus Gervais, 1877 accepted as Zaglossus Gill, 1877 (basis of record)
Acanthoglossus Gervais, 1877 accepted as Zaglossus Gill, 1877 (extant flag source)
Acarechimys Patterson in J.L. Kraglievich, 1965 † (basis of record)
Acarechimys Patterson in J.L. Kraglievich, 1965 † (extant flag source)
Acaremys Ameghino, 1887 † (extant flag source)
Acaremys Ameghino, 1887 † (basis of record)
Acarictis Gingerich & Deutsch, 1989 † (extant flag source)
Acarictis Gingerich & Deutsch, 1989 † (basis of record)
Acdestis Ameghino, 1887 † (extant flag source)
Acdestis Ameghino, 1887 † (basis of record)
Acdestodon Bown & Fleagle, 1993 † (basis of record)
Acdestodon Bown & Fleagle, 1993 † (extant flag source)
Acdestoides Bown & Fleagle, 1993 † (extant flag source)
Acdestoides Bown & Fleagle, 1993 † (basis of record)
Aceratherium Kaup, 1832 † (basis of record)
Aceratherium Kaup, 1832 † (extant flag source)
Acerodon Jourdan, 1837 (basis of record)
Acerodon Jourdan, 1837 (extant flag source)
Acerorhinus Kretzoi, 1942 † (basis of record)
Acerorhinus Kretzoi, 1942 † (extant flag source)
Acheronodon Archibald, 1982 † (extant flag source)
Acheronodon Archibald, 1982 † (basis of record)
Achlyoscapter Hutchison, 1968 † (extant flag source)
Achlyoscapter Hutchison, 1968 † (basis of record)
Acinonyx Brookes, 1828 (basis of record)
Acmeodon Matthew & Granger, 1921 † (basis of record)
Acmeodon Matthew & Granger, 1921 † (extant flag source)
Acoelodus Ameghino, 1897 † (basis of record)
Acoelodus Ameghino, 1897 † (extant flag source)
Acoelohyrax Ameghino, 1902 † (basis of record)
Acoelohyrax Ameghino, 1902 † (extant flag source)
Acoessus Cope, 1881 † (basis of record)
Acoessus Cope, 1881 † (extant flag source)
Acomys Geoffroy, 1838 (basis of record)
Acratocnus Anthony, 1916 † (basis of record)
Acratocnus Anthony, 1916 † (extant flag source)
Acremylodon Mones, 1986 † (extant flag source)
Acremylodon Mones, 1986 † (basis of record)
Acritohippus Kelly, 1995 † (basis of record)
Acritohippus Kelly, 1995 † (extant flag source)
Acritoparamys Korth, 1984 † (basis of record)
Acritoparamys Korth, 1984 † (extant flag source)
Acrobates Desmarest, 1817 (basis of record)
Acrocyon Ameghino, 1887 † (extant flag source)
Acrocyon Ameghino, 1887 † (basis of record)
Acrodelphis Abel, 1900 † (basis of record)
Acrophoca de Muizon, 1981 † (basis of record)
Acrophoca de Muizon, 1981 † (extant flag source)
Actenomys Burmeister, 1888 † (extant flag source)
Actenomys Burmeister, 1888 † (basis of record)
Adapidium Young, 1937 † (basis of record)
Adapidium Young, 1937 † (extant flag source)
Adapis Cuvier, 1822 † (basis of record)
Adapis Cuvier, 1822 † (extant flag source)
Adapoides Beard, Qi, Dawson, Wang & Li, 1994 † (extant flag source)
Adapoides Beard, Qi, Dawson, Wang & Li, 1994 † (basis of record)
Adcrocuta Kretzoi, 1938 † (extant flag source)
Adcrocuta Kretzoi, 1938 † (basis of record)
Addax Laurillard, 1841 (basis of record)
Addax Laurillard, 1841 (extant flag source)
Adelobasileus Lucas & Hunt, 1990 † (basis of record)
Adelobasileus Lucas & Hunt, 1990 † (extant flag source)
Adeloblarina Repenning, 1967 † (extant flag source)
Adeloblarina Repenning, 1967 † (basis of record)
Adelomyarion Hugueney, 1969 † (extant flag source)
Adelomyarion Hugueney, 1969 † (basis of record)
Adelomys Gervais in Pictet, 1853 † (extant flag source)
Adelomys Gervais in Pictet, 1853 † (basis of record)