Haostella or Haustella: How To spell?

The word Haostella is misspelled against Haustella, which is plural of "Haustellum"

Word contains consecutive vowels 'AU' in between alphabets h & stella is misspelled as 'AO'
Wrong Spelling:  h-ao-stella 
Correct Spelling:  h-au-stella 
Find more incorrect spellings of Haustella to spell right way.

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