Inspired an excerpt from Codex: Tyranids, and with the aid of Creature Feature articles in Chapter Approved, six Games Workshop hobbyists set about creating their own Lost Fleet Tyranid conversions.
The excerpt reads: "Many of the Magos Biologis who claim to be experts in the true nature of the Tyranid threat believe that the Tyranids of Behemoth were not the first to enter our galaxy. They were merely the first to arrive in large numbers. Archaeological evidence indicates there were potential Tyranid contacts long before the 41st millennium.
"We can only speculate whether these contacts were from proto-hive fleets, a long-range scouting force, or even creatures fleeing ahead of the oncoming Tyranid fleets. All we know is that for some time now, we've been in the clutches of the Hive Mind."