<style data-mw-deduplicate="TemplateStyles:r369756387">.mw-parser-output .smallcaps{font-variant:small-caps}</style><span class="smallcaps">Fig.</span> 124.—Side view of skull of Horse with the bone removed so as to expose the whole of the teeth. <i>c</i>, Canine; <i>Fr</i>, frontal; <i>i</i><sup>1</sup>, <i>i</i><sup>2</sup>, <i>i</i><sup>3</sup>, incisors; <i>L</i>, lachrymal; <i>m</i><sup>1</sup>, <i>m</i><sup>2</sup>, <i>m</i><sup>3</sup>, molars; <i>Ma</i>, malar or jugal; <i>Mx</i>, maxilla; <i>Na</i>, nasal; <i>oc</i>, occipital condyle; <i>Pa</i>, parietal; <i>pm</i><sup>1</sup>, situation of the vestigial first premolar, which has been lost in the lower, but is present in the upper jaw; <i>pm</i><sup>2</sup>, <i>pm</i><sup>3</sup>, <i>pm</i><sup>4</sup>, remaining premolars; <i>PMx</i>, premaxilla; <i>pp</i>, paroccipital process; <i>Sq</i>, squamosal. (After Flower and Lydekker.)
Frank E. Beddard
The Cambridge Natural History, Volume X—Mammalia.