The Amphidontidae are a family of

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

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), fur or ...

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 th ...

, belonging to the

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

s. It contains most of the species previously belonged to

Amphilestidae Amphilestidae is a family of Mesozoic mammals, generally regarded as eutriconodonts. They may form a paraphyletic or polyphyletic assemblage, though they share with gobiconodontids their similar tooth occlusion Occlusion may refer to: Health ...

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 d ...

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'' Lopatin, Maschenko & Averianov 2010 ***Species †'' Acinacodus tagaricus'' Lopatin, Maschenko & Averianov 2010 **Genus †''

Aploconodon ''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 ***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 ''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 ...

'' Kretzoi & Kretzoi 2000 non Stein 1859 'Phascolodon'' Simpson 1925; ''Phascolotheridium'' Cifelli & Dykes 2001***Species †'' Comodon gidleyi'' (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 ''Juchilestes'' is an amphidontid mammal genus from the early Cretaceous (early Aptian stage, 123.2 ± 1.0 Ma). It lived in what is now the Beipiao of western Liaoning, eastern China. It is known from the holotype D2607, which consists o ...

'' Gao et al. 2009 ***Species †''

Juchilestes liaoningensis ''Juchilestes'' is an amphidontid mammal genus from the early Cretaceous (early Aptian stage, 123.2 ± 1.0 Ma). It lived in what is now the Beipiao of western Liaoning, eastern China. It is known from the holotype D2607, which consists o ...

'' Gao et al. 2009 **Genus †''

Amphidon ''Amphidon'' is an extinct genus of Late Jurassic mammal from the Morrison Formation. It is present in stratigraphic zone 5.Foster, J. (2007). "Appendix." ''Jurassic West: The Dinosaurs of the Morrison Formation and Their World''. Indiana Univers ...

'' 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