Plesiosaria or Plesiosauria: How To spell?

The word Plesiosaria is misspelled against Plesiosauria, a noun meaning "An extinct order of Mesozoic marine reptiles including the genera Plesiosaurus, and allied forms; -- called also Sauropterygia."

Word contains consecutive vowels 'AU' in between alphabets plesios & ria is misspelled as 'A' as letter 'U' is phonetically ign
Wrong Spelling:  plesios-a-ria 
Correct Spelling:  plesios-au-ria 
Find more incorrect spellings of Plesiosauria to spell right way.

You might be interested to know

Sacy or Saucy?

Sovenance or Sovenaunce?

Tatologizing or Tautologizing?