Ctenoidan or Ctenoidean: How To spell?

The word Ctenoidan is misspelled against Ctenoidean, a noun meaning "One of the Ctenoidei."

Ctenoidean has vowels 'ea' together mispronounced as 'a'
Word contains consecutive vowels 'EA' in between alphabets ctenoid & n is misspelled as 'A'
Wrong Spelling:  ctenoid-a-n 
Correct Spelling:  ctenoid-ea-n 
Find more incorrect spellings of Ctenoidean to spell right way.

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