Mosasawrian or Mosasaurian: How To spell?
The word Mosasawrian 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 'AW'Wrong Spelling:  mosas-aw-rian  Correct Spelling:  mosas-au-rian 
Find more incorrect spellings of Mosasaurian to spell right way.