The dungavenhoover (Rhinosuchus americanum) is a late surviving relative of simosuchus, now more omnivorous than its extinct cousin. Growing to around 8 ft (2.4 meters) and weighing about 150 pounds, this notosuchian definitely grew more after surviving the kpg extinction events and surviving to the modern day. (individuals filled a unique niche after drifting from madegascar and becoming a new species).
It was believed that they had no mouth and basically turned drunk lumberjacks into a certain drug, but in reality those who witnessed this only saw the creature use it's tail to clobber it's would-be attacker and drag the corpse into the water, which this behavior is how it hunts.
