Mosasaarian or Mosasaurian: How To spell?

The word Mosasaarian 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 'AA'
Wrong Spelling:  mosas-aa-rian 
Correct Spelling:  mosas-au-rian 
Find more incorrect spellings of Mosasaurian to spell right way.

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