Hiparion or Hipparion: How To spell?
The word Hiparion is misspelled against Hipparion, a noun meaning "An extinct genus of Tertiary mammals allied to the horse, but three-toed, having on each foot a small lateral hoof on each side of the main central one. It is believed to be one of the ancestral genera of the Horse family."
Hipparion has double "pp" is mispronounced as "p"Remember double 'PP' in between the strings hi & arion which should not be misspelled with single 'P'
Wrong Spelling:  hi-p-arion  Correct Spelling:  hi-pp-arion 
Find more incorrect spellings of Hipparion to spell right way.