Mosasavrian or Mosasaurian: How To spell?
The word Mosasavrian is misspelled against Mosasaurian, a noun meaning "One of an extinct order of reptiles, including Mosasaurus and allied genera. See Mosasauria."
Word contains consecutive vowels 'AU' in between alphabets mosas & rian is misspelled as 'AV'Wrong Spelling:  mosas-av-rian  Correct Spelling:  mosas-au-rian 
Find more incorrect spellings of Mosasaurian to spell right way.