Plesiosour or Plesiosaur: How To spell?

The word Plesiosour is misspelled against Plesiosaur, a noun meaning "One of the Plesiosauria."

Word contains consecutive vowels 'AU' in between alphabets plesios & r is misspelled as 'OU'
Wrong Spelling:  plesios-ou-r 
Correct Spelling:  plesios-au-r 
Check more misspelled words of Plesiosaur to spell it correct.

You might be interested to know

Soucing or Saucing?

Sloughtermen or Slaughtermen?

Toutologize or Tautologize?