Oroedon or Oreodon: How To spell?

The word Oroedon is misspelled against Oreodon, a noun meaning "A genus of extinct herbivorous mammals, abundant in the Tertiary formation of the Rocky Mountains. It is more or less related to the camel, hog, and deer."

Word contains consecutive vowels 'EO' in between alphabets or & don is misspelled as 'OE'
Wrong Spelling:  or-oe-don 
Correct Spelling:  or-eo-don 
Find more incorrect spellings of Oreodon to spell right way.