CANADA
ALBERTA PROVINCE
PAINTEARTH COUNTY
PAINTEARTH CREEK
HORSESHOE CANYON FORMATION
EDMONTON GROUP
EDMONTONIAN AGE
LOWER MAASTRICHTIAN STAGE
UPPER SENONIAN SUBEPOCH
UPPER GULF EPOCH
LATE CRETACEOUS
STEM: TETRAPODA GOODRICH, 1930
SUPERCLASS: AMNIOTA HAECKEL, 1866
CLASS: MAMMALIA LINNAEUS, 1758
SUBCLASS: PROTOTHERIA GILL, 1872
INFRACLASS: TRECHNOTHERIA MCKENNA, 1975
LEGION: CLADOTHERIA MCKENNA, 1975
SUBLEGION: ZATHERIA MCKENNA, 1975
INFRALEGION: TRIBOSPHENIDA (MCKENNA, 1975) MCKENNA & BELL, 1997
SUPERCOHORT: THERIA (PARKER & HASWELL, 1987) MCKENNA & BELL, 1997
COHORT: MARSUPIALIA (ILLIGER, 1811) MCKENNA & BELL, 1997
ORDER: STAGODONTIA ARCHER, 1984
Family: STAGODONTIDAE Marsh, 1889
Didelphodon coyi
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