A sense of scale is an important thing to keep in mind, to serve as a reminder of the stunning grandeur in this view of life. Although it should be noted that it’s an elephant bird femur (now extinct), not an elephant femur.
Sort of like this bacteria-diatom-amphipod infinite zoom GIF.
elephant’sfemur, 1951, from LIFE magazine’s archival photos of bones by the great Andrewas Feininger.
Also see Patrick Gries and Jean-Baptiste de Panafieu’s stunning black-and-white images of animal skeletons.