User blog comment:BannedLagiacrus/Discussion of the Week: Hidden Remains/@comment-36756441-20190110213214

I think the reason (at least lore wise) why we dont see Nerscylla in MHgen is because the environment he was in, Volcanic Hollow, got flooded with lava. He must have either left in a hurry or burned up so that's why we still see the webs and dead Gypceros.