<style data-mw-deduplicate="TemplateStyles:r369756387">.mw-parser-output .smallcaps{font-variant:small-caps}</style><span class="smallcaps">Fig.</span> 111.—Series of metacarpals and metatarsals of Camelidae, to show secular and progressive increase in size. From left to right the species are <i>Protylopus petersoni</i>, <i>Poebrotherium labiatum</i>, <i>Gomphotherium sternbergi</i>, <i>Procamelus occidentalis</i>. <b>F</b>, Fore-foot; <b>H</b>, hind-foot; III, IV, third and fourth metapodials. (After Wortman.)
Frank E. Beddard
The Cambridge Natural History, Volume X—Mammalia.