Taxonomic groups in Information Age (6)
I believe the answer is:
genera
'taxonomic groups' is the definition.
(genus is a kind of taxonomic group)
'information age' is the wordplay.
'information' becomes 'gen' (gen is a kind of information).
'age' becomes 'era' (I've seen this before).
'gen'+'era'='GENERA'
'in' acts as a link.
(Other definitions for genera that I've seen before include "Orders with common characteristics" , "Taxonomic categories (biology)" , "Biological groups" , "Group of organisms" , "similar groups" .)