The word Prototrachauta is misspelled against Prototracheata, a noun meaning "Same as Malacopoda."
-->
Prototracheata has vowels 'ea' together mispronounced as 'au'
Word contains consecutive vowels 'EA' in between alphabets prototrach & ta is misspelled as 'AU'
Wrong Spelling:  prototrach-au-ta 
Correct Spelling:  prototrach-ea-ta 
Check more misspelled words of Prototracheata to spell it correct.