A pretty cold sort of prehistoric reptile (11)
I believe the answer is:
pterodactyl
'prehistoric reptile' is the definition.
'pterodactyl' can be an answer for 'reptile' (pterodactyl is a kind of reptile). I'm not certain of the 'prehistoric' bit.
'a pretty cold sort' is the wordplay.
'sort' is an anagram indicator.
'a'+'pretty'+'cold'='aprettycold'
'aprettycold' with letters rearranged gives 'PTERODACTYL'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for pterodactyl that I've seen before include "Late Jurassic flyer" , "Fossil flyer" , "Extinct flying reptile - protect lady (anag)" , "Flying dinosaur" , "Flying creature" .)