Bent over, tropical reptile that's very old (12)

I believe the answer is:

velociraptor

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'reptile that's very old' is the definition.
I know nothing about this answer so I can't judge whether this works.

'bent over tropical' is the wordplay.
'bent' indicates an anagram.
'over'+'tropical'='overtropical'
'overtropical' anagrammed gives 'VELOCIRAPTOR'.

Can you help me to learn more?

(Other definitions for velociraptor that I've seen before include "star of Jurassic Park" , "Bipedal dinosaur" , "Vocal pierrot (anag) - dinosaur" .)

I've seen this clue in The Telegraph.

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