User blog comment:Cory Jaynes/Reapers origins/@comment-211.30.44.215-20110807120337

The Reapers are AT LEAST 37 million years old - Derelict Reaper gives us that info - so it would suggest that they are considerably older than the Protheans. This is also made evident when Vigil implies the Protheans discovered the Keepers when they discovered the Citadel - both of which were created by the Reapers and are logically far older than the Protheans.