I've spent the past few days in a swamp running around and killing ever Gligar that spawns. I haven't been keeping track, but it must be at least close to 100, and I haven't seen a single Razor Fang. I've gotten several Quick Claws, which aren't listed as a drop on the wiki.
Is the Wiki information incorrect or am I extremely unlucky?
I know that the Wiki is out of date on a lot of stuff, but it makes a lot of logical sense for Gligars to drop their own evolution item.