FIGURE 1. Osteology of Indohyus and cross-sections of long bones of Eocene cetartiodactyls.
From the following article:
Whales originated from aquatic artiodactyls in the Eocene epoch of India
J. G. M. Thewissen, Lisa Noelle Cooper, Mark T. Clementz, Sunil Bajpai & B. N. Tiwari
Nature 450, 1190-1194(20 December 2007)
doi:10.1038/nature06343
a, b, Oblique lateral view of skull RR 208 (a) and ventral view of skull RR 207 (b). c–h, Posterior views of humerus (RR 149, c) and femur (RR 101, d), plantar views of metacarpal (RR 138, e) and proximal manual phalanx (RR 19, f), dorsal view of astragalus (RR 224, g), and posterior view of metatarsal (RR 139, h). i–l, Histological mid-shaft sections for humerus of the pakicetid Ichthyolestes (H-GSP 96227, i), humerus of Indohyus (RR 157, j), femur of Indohyus (RR 42, k) and femur of the artiodactyl Cainotherium (IVAU unnum, l). Both scale bars are 1 cm; the scale bar near d goes with a–h, and that near l goes with i–l.
