User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-74.193.210.169-20120624024933/@comment-4212769-20120624110750

For me Piscine Wyverns are Wyverns. As someone said to my evolution theory before... "Plesioth is just an underwater-Rathian" (or something similar)... I don't know where this guy sees a Rathian... But it's for sure it has very much similarities with the build of body and so on. For me Piscine Wyverns have evolved from Flying Wyverns. They're no fish and still very similar to Wyverns.

About Akantor: IMO it is just like it evolved from Flying Wyverns but are still too similar to define a whole new class. You can see that at those wing remains at the side.

About Jinouga: I would say as a link between Wyverns and Pelagus it still can be referred as Wyvern. Though that's harder to believe than Akantor... :X

For me are Brute Wyverns the class that have the least similarities to Wyverns although called Wyvern. I can only explain it as evolution of raptorial Birdwyverns. So...

However... somehow the Wyvern can be found in every Wyvern class...