Testacaen or Testacean: How To spell?

The word Testacaen is misspelled against Testacean, a noun meaning "Onr of the Testacea."

Testacean has vowels 'ea' together mispronounced as 'ae'
Word contains consecutive vowels 'EA' in between alphabets testac & n is misspelled as 'AE'
Wrong Spelling:  testac-ae-n 
Correct Spelling:  testac-ea-n 
Explore spell check of Testacean to spell without errors.

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