Metatheria

Distribution:

• Miocene of Argentina (1 collection)

• Eocene of Antarctica (1), China (1), United States (1: Wyoming)

• Paleocene of Argentina (1), United States (1: North Dakota)

• Cretaceous of Canada (23: Alberta), United States (11: Montana, New Mexico, South Dakota, Utah, Wyoming)

Total: 40 collections each including a single occurrence

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