Cirobranchiata or Cirrobranchiata: How To spell?
The word Cirobranchiata is misspelled against Cirrobranchiata, a noun meaning "A division of Mollusca having slender, cirriform appendages near the mouth; the Scaphopoda."
Cirrobranchiata has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings ci & obranchiata which should not be misspelled with single 'R'
Wrong Spelling:  ci-r-obranchiata  Correct Spelling:  ci-rr-obranchiata 
Find more incorrect spellings of Cirrobranchiata to spell right way.