User blog comment:Lord Loss/Monster Hunter Frontier G Discussion/@comment-93.34.10.163-20130329180135/@comment-93.33.249.189-20130330231648

The Leviathan group is a sister-taxa (the "brother" group of all the other Wyvern, Herbivores included). They are Reptiles, and Gobul is a very adapted one. It has lost the neck, but the skeleton featuers very much details common with other Leviathans (I'm Italian, I hope you understood).

This Pokarodon features the head of a Sirenidae (like Warlus, a relative group of the Elephants one) and the body of a Carnivorous Mammal ("Ferae", the group which include Cats, Wolfs, Bears and their relatives, like Seals). So I think the Pokarodon isn't a true Leviathan... But a strange mammal, or a Therapsid whit some characteristics in common with Leviathans, Walruses and Seals...