Tusked mammal from the West Urals (6)
I believe the answer is:
walrus
'tusked mammal' is the definition.
(I've seen this before)
'from the west urals' is the wordplay.
'from' indicates anagramming the letters (from the letters).
'the west' becomes 'W' (synonyms).
'w'+'urals'='wurals'
'wurals' is an anagram of 'WALRUS'.
(Other definitions for walrus that I've seen before include "'The time has come', the . . . said" , "Kind of heavy moustache that hangs down at sides" , "Sea mammal, the morse" , "Amphibious Arctic tusked animal" , "Sea-mammal" .)