Proterosavrus or Proterosaurus: How To spell?
The word Proterosavrus is misspelled against Proterosaurus, a noun meaning "An extinct genus of reptiles of the Permian period. Called also Protosaurus."
Word contains consecutive vowels 'AU' in between alphabets proteros & rus is misspelled as 'AV'Wrong Spelling:  proteros-av-rus  Correct Spelling:  proteros-au-rus 
Check more misspelled words of Proterosaurus to spell it correct.