"eupodophis" was a marine snake that lived in the mediterranean tethys ocean. it had a laterally compressed body and short, paddle-like tail. the vertebrae and ribs of "eupodophis" are pachyostotic, or thickened, as an adaptation to a marine lifestyle. the pelvic bones are small and weakly attached to each other. tarsal bones are present but reduced in size and form. the metatarsals and phalanges of the foot are absent.