Oligocheata or Oligochaeta: How To spell?

The word Oligocheata is misspelled against Oligochaeta, a noun meaning "An order of Annelida which includes the earthworms and related species."

Oligochaeta has vowels 'ae' together mispronounced as 'ea'
Word contains consecutive vowels 'AE' in between alphabets oligoch & ta is misspelled as 'EA'
Wrong Spelling:  oligoch-ea-ta 
Correct Spelling:  oligoch-ae-ta 
Find more incorrect spellings of Oligochaeta to spell right way.

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