Dating ape, bananas must be numbered (9)

I believe the answer is:

paginated

'numbered' is the definition.
(paginating is a kind of numbering)

'dating ape bananas' is the wordplay.
'bananas' indicates an anagram (informal term for mad).
'dating'+'ape'='datingape'
'datingape' with letters rearranged gives 'PAGINATED'.

'must be' acts as a link.

I've seen this clue in The Daily Express.

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