Figure 3

Bone growth marks in the periosteum of adult metatarsals. Growth marks are indicated by white arrows, small black arrows mark the growth lines present within the EFS, and EFS is identified by a white line. The images were obtained under polarised light using a 1/4λ filter. Scale: 0.5 mm. (a) H. cf. sebastopolitanum (primigenium morphotype) metatarsal PNT-4. (b) Hipparion aff. platygenys (dietrichi morphotype) metatarsal DTK-106. (c) H. philippus (dietrichi morphotype) metatarsal PER-1211. (d) H. gromovae metatarsal IPS-101809. (e) H. macedonicum (macedonicum morphotype) metatarsal PER-485. (f) H. truyolsi metatarsal IPS-28842.