Alphadon marshi
Temporal range: Early Cretaceous-Paleocene (Albian-Danian), 101-65 million years ago

CLASSIFICATIONS
Kingdom: Animal (Animalia/Animalian)
Subkingdom: Eumetazoa (Eumetazoa)
Phylum: Chordate (Chordata)
Subphylum: Vertebrate (Vertebrata)
Superclass: Tetrapod (Tetrapoda)
Clade: Amniotes (Amniota)
Clade: Synapsid (Synapsida)
Clade: Therapsid (Therapsida)
Clade: Cynodont (Cynodontia)
Clade: Mammaliamorph (Mammaliamorpha)
Clade: Mammaliaformes (Mammaliaformes)
Class: Mammal (Mammalia/Mammalians)
Subclass: Theria (Theria)
Clade: Metatheria (Metatheria)
Clade: Marsupialiformes (Marsupialiformes)
Family: Alphadonts (Alphadontidae)
Genus: Alphadon (George Gaylord Simpson, 1927)
Species: Alphadon marshi (George Gaylord Simpson, 1927)

BIOLOGICAL INFORMATION
Living: North America (United States and Canada)
Diet: Omnivores they ate the plants, insects, small reptiles such as lizards
Predation: Theropod dinosaur such as Tyrannosaurus rex, Albertosaurus, Gorgosaurus, Daspletosaurus, Dromaeosaurus, Saurornitholestes, Acheroraptor, Dakotaraptor; pterosaurs such as Quetzalcoatlus; crocodiles such as Deinosuchus, Thoracosaurus, Borealosuchus, Brachychampsa
Size: 13 inches long

Info
Alphadon marshi (meaning: "Marsh's alpha teeth") is a species of small primitive marsupial-line mammal, that lived in Cretaceous to Paleocene about 101 to 65 million years ago and what is now lived in North America, and its named by George Gaylord Simpson in 1927.