Anuloida or Annuloida: How To spell?
The word Anuloida is misspelled against Annuloida, a noun meaning "A division of the Articulata, including the annelids and allied groups; sometimes made to include also the helminths and echinoderms."
Annuloida has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings a & uloida which should not be misspelled with single 'N'
Wrong Spelling:  a-n-uloida  Correct Spelling:  a-nn-uloida 
Check more misspelled words of Annuloida to spell it correct.