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Perhaps T. Rex finale of Bolan in US radio broadcast (8)

Ross

I believe the answer is:

dinosaur

I'm a little stuck... Click here to teach me more about this clue!

'perhaps t rex' is the definition.
I can't tell whether this definition defines the answer.

'finale of bolan in us radio broadcast' is the wordplay.
'finale of' indicates one should take the final letters.
'in' indicates putting letters inside.
'broadcast' is an anagram indicator (letters scattered or cast around).
The last letter of 'bolan' is 'n'.
'us'+'radio'='usradio'
'usradio' is an anagram of 'diosaur'.
'n' going within 'diosaur' is 'DINOSAUR'.

Can you help me to learn more?

(Other definitions for dinosaur that I've seen before include "I adorn US with this old creature" , "One as T. Rex, triceratops" , "Large extinct reptile" , "Prehistoric reptile" , "Extinct terrestrial reptile" .)

I've seen this clue in The Telegraph.
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