Satherium
Introduction '''''Satherium''''' is an extinct genus of otters that lived in North America during the Pliocene and Pleistocene. Two species are known, ''Satherium piscinarium'' and ''Satherium ingens''.''S. piscinarium'' was originally classified as a species of ''Lutra''. The giant otter of South America is considered the closest living relative of this genus.
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