Literary genre turning up some terrific stories (3-2)
I believe the answer is:
sci-fi
'literary genre' is the definition.
(I've seen this before)
'turning up some terrific stories' is the subsidiary indication.
'turning up' says the letters should be written in reverse.
'some' indicates a hidden word (Some of the parts of the word are used).
'ifics' is hidden in the letters of 'terrific stories'.
'ifics' back-to-front is 'scifi'.
(Other definitions for sci-fi that I've seen before include "Doctor Who genre" , "Space opera genre" , "Isaac Asimov genre" , "Fiction genre of Philip K. Dick" , "Literary 7 down" .)