Eupodophis years old. It was found in Cenomanian-age limestone near the al-Nammoura village in Lebanon. "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. The fossil skeleton of "Eupodophis" was analyzed using synchrotron x-rays at the European Synchrotron Radiation Facility in
Roll the Bones strong vocal melodies at the beginning and base the rest of the tune around it. Lifeson had wanted to try playing funk rhythms and attempted it "Presto" and wished to explore it further on "Roll the Bones". The majority of the arrangements worked out at the writing stage remained unchanged which allowed the group to use the demos as a guide for recording, done by transferring the completed demos to 24-track and re-recording the parts. The album contains a running lyrical theme concerning the element of chance in different aspects of life, which Peart had devised while experimenting with lyrics.