A Manual of Elementary Geology / or, The Ancient Changes of the Earth and its Inhabitants as Illustrated by Geological Monuments

by Sir Charles Lyell

Fig. 133.

Pig.

Sus scrofa, Lin. (common pig); from shell-marl, Forfarshire; posterior molar, lower jaw, nat. size.

Fig. 134.

Horse.

Equus caballus, Lin. (common horse); from the shell marl, Forfarshire; second molar, lower jaw.

• a. grinding surface, two-thirds nat. size.
• b. side view of same, half nat. size.