Hide support for reptile (11)

I believe the answer is:

leatherback

'reptile' is the definition.
(leatherback is a kind of reptile)

'hide support' is the wordplay.
'hide' becomes 'leather' (an animal hide).
'support' becomes 'back' (to back is to support or endorse).
'leather'+'back'='LEATHERBACK'

'for' is the link.

I've seen this clue in The Daily Express.

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