The word Saropterygia is misspelled against Sauropterygia, a noun meaning "Same as Plesiosauria."
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Word contains consecutive vowels 'AU' in between alphabets s & ropterygia is misspelled as 'A' as letter 'U' is phonetically ig
Wrong Spelling:  s-a-ropterygia 
Correct Spelling:  s-au-ropterygia 
Find more incorrect spellings of Sauropterygia to spell right way.