Rocky poo relic palaeontologist ultimately probes? (9)

I believe the answer is:

coprolite

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'rocky poo relic palaeontologist ultimately probes?' is the definition.
I can't judge whether this definition defines the answer.

'rocky poo relic palaeontologist ultimately probes?' is the wordplay.
'rocky' is an anagram indicator (letters rocked or thrown around).
'ultimately' says to take the final letters.
'probes?' indicates putting letters inside (probe can mean to poke or prod into).
The last letter of 'palaeontologist' is 't'.
'poo'+'relic'='poorelic'
'poorelic' is an anagram of 'coprolie'.
'coprolie' placed around 't' is 'COPROLITE'.

Can you help me to learn more?

I've seen this clue in The Independent.

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