Prehistoric monster is around somehow (8)

I believe the answer is:

dinosaur

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

'prehistoric monster' is the definition.
'dinosaur' can be an answer for 'monster' (I've seen this before). I am not certain of the 'prehistoric' bit.

'is around somehow' is the wordplay.
'somehow' indicates anagramming the letters.
'is'+'around'='isaround'
'isaround' anagrammed gives 'DINOSAUR'.

Can you help me to learn more?

(Other definitions for dinosaur that I've seen before include "Settle under canvas" , "Extinct reptilian animal" , "Fogey" , "Enormous extinct reptile of ancient times" , "Prehistoric monster from Jurassic era" .)

I've seen this clue in The Irish Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.