Pycnaspiden or Pycnaspidean: How To spell?
The word Pycnaspiden is misspelled against Pycnaspidean, an adjective meaning "Having the posterior side of the tarsus covered with small irregular scales; -- said of certain birds."
Pycnaspidean has vowels 'ea' together mispronounced as 'e'Word contains consecutive vowels 'EA' in between alphabets pycnaspid & n is misspelled as 'E'
Wrong Spelling:  pycnaspid-e-n  Correct Spelling:  pycnaspid-ea-n 
Find more wrongly spelled words of Pycnaspidean to spell it well.