Crinoideyn or Crinoidean: How To spell?
The word Crinoideyn is misspelled against Crinoidean, a noun meaning "One of the Crinoidea."
Crinoidean has vowels 'ea' together mispronounced as 'ey'Word contains consecutive vowels 'EA' in between alphabets crinoid & n is misspelled as 'EY'
Wrong Spelling:  crinoid-ey-n  Correct Spelling:  crinoid-ea-n 
Find more incorrect spellings of Crinoidean to spell right way.