--> Turritelloid has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings turrite & oid which should not be misspelled with single 'L'
Wrong Spelling:  turrite-l-oid 
Correct Spelling:  turrite-ll-oid 
Check more misspelled words of Turritelloid to spell it correct.