Polypteroidau or Polypteroidei: How To spell?

The word Polypteroidau is misspelled against Polypteroidei, a noun meaning "A suborder of existing ganoid fishes having numerous fins along the back. The bichir, or Polypterus, is the type. See Illust. under Crossopterygian."

Word ends with consecutive vowels 'EI' preceded by alphabets 'polypteroid' is misspelled as 'AU'
Wrong Spelling:  polypteroid-au 
Correct Spelling:  polypteroid-ei 
Check more misspelled words of Polypteroidei to spell it correct.