Plestocene or Pleistocene: How To spell?

The word Plestocene is misspelled against Pleistocene, a noun meaning "The Pleistocene epoch, or deposits."

Word contains consecutive vowels 'EI' in between alphabets pl & stocene is misspelled as 'E' as letter 'I' is phonetically igno
Wrong Spelling:  pl-e-stocene 
Correct Spelling:  pl-ei-stocene 
Find more incorrect spellings of Pleistocene to spell right way.