Plesiosavr or Plesiosaur: How To spell?
The word Plesiosavr is misspelled against Plesiosaur, a noun meaning "One of the Plesiosauria."
Word contains consecutive vowels 'AU' in between alphabets plesios & r is misspelled as 'AV'Wrong Spelling:  plesios-av-r  Correct Spelling:  plesios-au-r 
Find more incorrect spellings of Plesiosaur to spell right way.