In this study, we observed haversian systems on the endosteal surface of the femur bone of one male individual of Roughtail Rock Agama, Stellagama stellio, which was collected from Barla/Isparta province of Turkey. It was observed that the haversian canal was located on the center of the haversian systems or secondary osteons, and it was surrounded by concentric lamellae. All lamellae were separated from each other by a cement line that stained darker than other constituents. Volkmann's canals were not observed between haversian canals, and other concentric lamellae were not encountered between periosteum and haversian systems. These results indicate that remodeling can be partly seen in this species. Our study is important in terms of being the first record to demonstrate haversian systems on the femur bone of S. stellio.