Mamalia or Mammalia: How To spell?
The word Mamalia is misspelled against Mammalia, a noun meaning "The highest class of Vertebrata. The young are nourished for a time by milk, or an analogous fluid, secreted by the mammary glands of the mother."
Mammalia has double "mm" is mispronounced as "m"Remember double 'MM' in between the strings ma & alia which should not be misspelled with single 'M'
Wrong Spelling:  ma-m-alia  Correct Spelling:  ma-mm-alia 
Find more wrongly spelled words of Mammalia to spell it well.