Proboscidein or Proboscidean: How To spell?

The word Proboscidein is misspelled against Proboscidean, an adjective meaning "Proboscidian."

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

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