Alphadon
Alphadon (binomen a Simpson anno 1927 inventum) est genus mammalium marsupialium exstinctum.

Systema taxinomicum Animalis 
Imperium: Eucaryota 
Regnum: Animalia 
Gradus: Metazoa 
Subgradus: Eumetazoa 
Subregnum: Bilateria 
Infraregnum: Eucoelomata 
Supraphylum: Deuterostomia 
Infraphylum: Chordonia 
Phylum: Chordata 
Subphylum: Vertebrata 
Infraphylum: Gnathostomata 
Supraclassis: Tetrapoda 
Infraclassis: Amniota 
Ramus: Mammaliaformes 
Classis: Mammalia 
Subclassis: Theriiformes 
Infraclassis: Holotheria 
Supralegio: Trechnotheria 
Legio: Cladotheria 
Sublegio: Zatheria 
Infralegio: Tribosphenida 
Supracohors: Theria 
Cohors: Marsupialia 
Magnaordo: Ameridelphia 
Ordo: Didelphimorphia 
Familia: Didelphidae 
Subfamilia: †Alphadontinae
Genus: †Alphadon (Simpson, 1927)

Species 
 †Alphadon halley
 †Alphadon marshi
 †Alphadon sahnii
 †Alphadon wilsoni

Didelphidae