Ancient reptile in terrible raid on us (8)

I believe the answer is:

dinosaur

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'ancient reptile' is the definition.
'dinosaur' can be an answer for 'reptile' (dinosaur is a kind of reptile). I'm not certain of the 'ancient' bit.

'terrible raid on us' is the wordplay.
'terrible' indicates an anagram.
'raid'+'on'+'us'='raidonus'
'raidonus' anagrammed gives 'DINOSAUR'.

'in' is the link.

Can you help me to learn more?

(Other definitions for dinosaur that I've seen before include "Extinct beast" , "Extinct repile" , "old-fashioned sort" , "Huge prehistoric monster" , "Prehistoric monster found on Darius" .)

I've seen this clue in The Sun.

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