More recent article identifies site of Roman basilica (7)
I believe the answer is:
'site of roman basilica' is the definition.
(site of the Lateran Basilica in Rome)
'more recent article' is the wordplay.
'more recent' becomes 'later' ('late' can be similar in meaning to 'recent').
'article' becomes 'an' (indefinite article).
'identifies' is the link.
(Other definitions for lateran that I've seen before include "St John --, church in Rome" , "St. John -- is the cathedral of Rome" , "Palace" , "Church council" , "Of a particular Roman district; an alert, anag." .)