These remarkable images of the anatomy of Godzilla, Mothra, and Anguirus are a little bit puzzling. They clearly come from a book (the Anguirus picture has the number 69 prominently displayed in the upper-left-hand corner), but I don’t know what the book is or who the artist is or what any of the Japanese text says. And two of them are cut off on the side—I’d particularly like to see what the artist did with the spiked tail club of Anguirus, but it’s not visible.
Anguirus is kind of the star of the show here, because his anatomy is so very compelling. In Godzilla Raids Again, the scientists mention how tough Anguirus is to defeat because he has “a brain for each limb.” You can see in the pic that there is some text about Anguirus’ left knee, presumably it is an explanation of Anguirus’ unique central nervous system. According to the Worlds of Imagination website, Anguirus “has also shown the ability to curl himself into a ball and propel himself at tremendous speed in Godzilla: Final Wars.”
A couple of years ago Brad McGinty did a few similar illustrations of the Xenomorph from Alien, Mogwai from Gremlins, and a few others, but these don’t look to be from him as far as I can tell.
Here’s a rousing confrontation between Anguirus and Godzilla from Godzilla Raids Again, complete with tumbling Japanese edifices. Awesome as always.