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UNGULATA, 



Glacial period. The form of the horns (fig. 652) is one 

 quite peculiar among the existing Deer, but Ccrvidcc with 

 antlers of the Capreoline type have been shown by Boyd- 

 Dawkins to have existed during the Miocene period, so that 



Fig. 651.— CervMs megaceros (Megaceros Hibernicus), the " Irish Elk." Post-Pliooene. 



this form of antler must be regarded as one of the most 

 ancient at present known to us. In fact, the Miocene genus 

 Dicroceros appears to be an early representative of this 

 type. 



d. Camelopardalidce. — This family includes only a single 

 living animal — the Camelopardalis Giraffa, or Giraffe. There 

 are no upper canines in the Giraffe, and both sexes possess 

 two small frontal horns, wliich, however, are persistent, and 



