Alphadon

Alphadon (meaning "first tooth") is an extinct genus of small, primitive mammal that was a member of the metatherians, a group of mammals that includes modern-day marsupials. Its fossils were first discovered and named by George Gaylord Simpson in 1929.

Alphadon
Temporal range: Late Cretaceous,
Reconstruction of Alphadon sp.
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Family: †Alphadontidae
Genus: †Alphadon
Simpson, 1927
Species
  • A. marshi (type)
    Simpson, 1927
  • A. wilsoni
    Lillegraven, 1969
  • A. halleyi
    Sahni, 1972
  • A. attaragos
    Lillegraven & McKenna, 1986
  • A. sahnii
    Lillegraven & McKenna, 1986
  • A. clemensi
    Eaton, 1993
  • A. lillegraveni
    Eaton, 1993
  • A. perexiguus
    Cifelli, 1994
  • A. eatoni
    Cifelli & Muizon, 1998
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