Ozymandias ending among ancient ruins, for example? (8)
I believe the answer is:
instance
'example?' is the definition.
('instance' can be a synonym of 'example')
'ozymandias ending among ancient ruins' is the wordplay.
'ending' says to take the final letters.
'among' is an insertion indicator.
'ruins' indicates anagramming the letters.
The final letter of 'ozymandias' is 's'.
'ancient' with letters rearranged gives 'intance'.
's' inserted into 'intance' is 'INSTANCE'.
'for' is the link.
(Other definitions for instance that I've seen before include "'Example, illustration (8)'" , "Specimen" , "Exemplify" , "Cite as an example" , "A case or example of something" .)