The Amphidontidae are a family of extinct

mammals Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fu ...

from the Early

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of ...

, belonging to the

triconodont Eutriconodonta is an order of early mammals. Eutriconodonts existed in Asia, Africa, Europe, North and South America during the Jurassic and the Cretaceous periods. The order was named by Kermack ''et al.'' in 1973 as a replacement name for the ...

s. It contains most of the species previously belonged to Amphilestidae.

Phylogeny

Cladogram A cladogram (from Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an evolutionary tree because it does not show how ancestors are related to ...

after Marisol Montellano, James A. Hopson, James M. Clark (2008) and Gao ''et al.'' (2010).

Taxonomy

Based on the works by Mikko HaaramoMikko's Phylogeny Archiv

and the Palaeofile website.Paleofile.com (net, info) . *Family †Amphidontidae Simpson 1925 **Genus †''

Acinacodus ''Acinacodus'' is an extinct genus of amphidontid "eutriconodont" which existed in Shestakovo 1 locality in Western Siberia, Russia during the early Cretaceous period. It was described by A. V. Lopatin, E. N. Maschenko and A. O. Averianov in 20 ...

'' Lopatin, Maschenko & Averianov 2010 ***Species †''

Acinacodus tagaricus ''Acinacodus'' is an extinct genus of amphidontid "eutriconodont" which existed in Shestakovo 1 locality in Western Siberia, Russia during the early Cretaceous period. It was described by A. V. Lopatin, E. N. Maschenko and A. O. Averianov in ...

'' Lopatin, Maschenko & Averianov 2010 **Genus †'' Aploconodon'' Simpson 1925 ***Species †''

Aploconodon comoensis ''Aploconodon'' is an extinct genus of Late Jurassic mammals belonging to the family Amphidontidae. It contains one species, ''A. comoensis''. It is present in stratigraphic zone 5 of the Morrison Formation.Foster, J. (2007). "Appendix." ''Jura ...

'' Simpson 1925 **Genus †'' Comodon'' Kretzoi & Kretzoi 2000 non Stein 1859 'Phascolodon'' Simpson 1925; ''Phascolotheridium'' Cifelli & Dykes 2001***Species †''

Comodon gidleyi ''Comodon'' is an extinct genus of Late Jurassic mammal from the Morrison Formation of Wyoming. Fossils of this taxon are present in stratigraphic zone 5.Foster, J. (2007). "Appendix." ''Jurassic West: The Dinosaurs of the Morrison Formation and ...

'' (Simpson 1925) Kretzoi & Kretzoi 2000 'Phascolodon gidleyi'' Simpson 1925; ''Phascolotheridium gidleyi'' (Simpson 1925) Cifelli & Dykes 2001**Genus †'' Hakusanodon'' Rougier, Isaji & Manabe 2007 ***Species †'' Hakusanodon archaeus'' Rougier, Isaji & Manabe 2007 **Genus †'' Juchilestes'' Gao et al. 2009 ***Species †'' Juchilestes liaoningensis'' Gao et al. 2009 **Genus †'' Amphidon'' Simpson 1925 ***Species †'' Amphidon superstes'' Simpson 1925 **Genus †'' Gobiotheriodon'' Trofimov 1997 'Gobiodon'' Trofimov 1980 non Bleeker 1856***Species †'' Gobiotheriodon infinitus'' (Trofimov 1980) Trofimov 1997 'Gobiodon infinitus'' Trofimov 1980**Genus †'' Manchurodon'' Yabe & Shikama 1938 ***Species †'' Manchurodon simplicidens'' Yabe & Shikama 1938 **Genus †'' Nakunodon'' Yadagiri 1985 ***Species †'' Nakunodon paikasiensis'' Yadagiri 1985

References

* Early Cretaceous first appearances Early Cretaceous extinctions Prehistoric mammal families Taxa named by George Gaylord Simpson {{Jurassic-mammal-stub