Dermopterygi or Dermopterygii: How To spell?
The word Dermopterygi is misspelled against Dermopterygii, a noun meaning "A group of fishlike animals including the Marsipobranchiata and Leptocardia."
Dermopterygii has double 'ii' in the end mispronounced as 'i'Remember double 'II' appears in the end of this word which should not be misspelled with single 'I'
Wrong Spelling:  dermopteryg-i  Correct Spelling:  dermopteryg-ii 
Find more incorrect spellings of Dermopterygii to spell right way.