Holostayn or Holostean: How To spell?

The word Holostayn is misspelled against Holostean, an adjective meaning "Pertaining to the Holostei."

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

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