User blog comment:Lord Loss/Monster Hunter Frontier Season Forward 5/@comment-198.228.228.175-20121106213937/@comment-3528906-20121110165523

The only issue to the last statement is that they were created BEFORE Fanged wyverns, and when they first appeared, they were classified as nothing, so we just went with the pseudo explanation. Also, on the MHFU website, in the flying wyvern section, they classify Akantor as a Flying wyvern, so that is also an issue you may have to deal with.