This is something I've drew in 2012, though this idea has been floating around in my head since 2009. And it's something I'm still refining and working on to this day
Anyway this whole thing started with a cousin of the lobe-finned fish. Instead of using only 2 pairs of limbs for locomotion it used 3, which led to the prehistoric 6 limbed reptile that birthed the entire hexapod family tree
One of the family lines grew a colorful interdigital membrane to intimidate opponents and attract par...