Board Thread:General Discussions/@comment-24981691-20140525033847/@comment-7622429-20140729153403

Kurai Nikushimi wrote: We need more about Rodan, which will be in next Godzilla movie, because now, we can only assume, it's some kind of pterosaur. And pterosaurs belong to Mesozoic era.

So, here is chart:

M.U.T.O. - species of arthropods, originated in Cambrian(era of Paleozoic, 541–485.4 million years ago), most favorable period was Carboniferous(era of Paleozoic, 358.9–298.9 million years ago) due to high concentration of oxygen(32.5% of atmosphere).

Godzilla - species of amphibians, originated in Devonian(era of Paleozoic, 419.2–358.9 million years ago), most favorable period unknown

Rodan - species of pterosaurs, originated in Triassic(ero of Mesozoic, 252.17–201.3 million years ago), extinct in Cretaceous(ero of Mesozoic, 145–66 million years ago)

And you say, they all are from same specific subsets of animals? Yes, I do believe them to come from specific lineages, some earlier or later than others in the evolution of animals. Mothra, Godzilla, the MUTOs, and Rodan are relatively easy to pinpoint, but King Ghidorah is a whole other matter.