--> Lamellibranchiate has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings lame & ibranchiate which should not be misspelled with single 'L'
Wrong Spelling:  lame-l-ibranchiate 
Correct Spelling:  lame-ll-ibranchiate 
Find more wrongly spelled words of Lamellibranchiate to spell it well.