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Genus Nimravus
- false sabertoothed tigers
Genus Ursus
- type genus of Ursidae: brown bears; in some classifications genus Ursus includes all bears
Genus Euarctos
- American black bears; in some classifications not a separate genus from Ursus
Genus Selenarctos
- Asiatic black bears; in some classifications not a separate genus from Ursus
Genus Thalarctos
- polar bears; in some classifications not a separate genus from Ursus
Genus Melursus
- sloth bears; in some classifications not a separate genus from Ursus
Genus Viverra
- type genus of the family Viverridae