I'm still fairly new to this game, so I'm still learning things. When reading over the entry for the Swarmlord, I was a little underwhelmed by the wording on Bonesabres. Specifically that they aren't Power Weapons in effect as Bone Swords are. So I looked it up on the Internet to see if someone else noted the missing words. I was also suspicious of the lack of Rending Claws for Trygons and kin.
Fun Fact! I'm a newb. So Monstrous Creatures? Far scarier than I thought. They come with built in Super Rending rules. I was aware of the extra d6 against vehicles, but I managed to glaze over sentence immediately prior in the rulebook. Built into Monstrous Creatures rules:
Move Through Cover
Shoot 2 Weapons + Relentless
Can't Go to Ground
50% Cover Rule Like Vehicles
Ignore Armor in Assault
+d6 Armor Penetration
Scary.