Life-History Traits of the Miocene Hipparion concudense (Spain) Inferred from Bone Histological Structure (original) (raw)
Figure 10
Bone histology of the metapodials of Hipparion concudense from Los Valles de Fuentidueña and Concud.
The figure shows the histological features characterizing the three ontogenetical groups established in the Hipparion concudense sample from skeletechronological data (a–c) and different growth patterns (d–f). (a) 31186: immature specimens with vascular canals open to the periosteal surface (white arrows); (b) 17083: subadult specimen with fibrolamellar bone tissue, two LAGs and no periosteal canals; (c) 67917: adult specimen showing intracortical fibrolamellar bone with two LAGs and periosteal lamellar with EFS. Red arrows indicate growth marks; (d) 30599: one LAG, one inner EFS (4 LAGs) and one outer EFS (2 LAGs); (e) 17242: one LAG and one EFS (4 LAGs); 17184: (f) two EFSs (6 LAGs in the inner EFS and 3 LAGs in the outer EFS). Growth marks are indicated with red arrows. Scale bar: 500 µm.