Hyracotherium - Prehistoric Animals 42/50
The lightly built, fox-sized animal lived in Europe and North America about 50 million years ago, in Early Eocene times; it is also called Eohippus, 'dawn horse', for it marks the beginnings of horse evolution. It ran on the hoofed tips of the three toes on each elongated foot; on the front foot only was an extra, outer toe which scarcely reached the ground. The jaws bore small chisel-like incisors, small canines, and low-crowned cheek teeth with rounded conical cusps. The head was long and low, the brain small, the back curved and the tail rather short.
Picture added on 23 July 2013 at 14:12