MECHANICS OF LOCOMOTION 



751 



A DBF 



Figure 680. — Limb structure of perissodactyls: Fore limbs in four Old World rhinoceros subfamilies 



Aceratheriinae, Ceratorhinae (Sumatran), Rhinocerotinae (Indian), and Dicerotinae (African), represented by (A) CeTatorhinus sumatrensis, (B) C. lepiorhinus , 

 (C) Aceratkerium incisivum, (D) Ceraiotkerium simum, (E) Opsiceros (Diceros) bicornis, (F) Hhinoeeros indicus, (G) M. javanicus. Somewhat less than one-tenth 

 natural size. 



B C D E F 



Figure 681. — Limb structure of perissodactyls: Hind limbs of rhinoceroses found in North America 



A, Hyrachyus agrarius: B, Hyracodon nebrascemis; both one-sixth natural size. C, Caenopus occidentalis: D, Amynodon tntermedius: E, Melamynodon planifron 

 F, Teleoceras fossiger; all one-eighth natural size. These represent the four subfamilies of Hyracodontinae, Aceratheriinae, Amynodontinae, and Teleocerinae. 



