Pterosourian or Pterosaurian: How To spell?

The word Pterosourian is misspelled against Pterosaurian, an adjective meaning "pertaining to the Pterosauria."

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

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