Turitella or Turritella: How To spell?
The word Turitella is misspelled against Turritella, a noun meaning "Any spiral marine gastropod belonging to Turritella and allied genera. These mollusks have an elongated, turreted shell, composed of many whorls. They have a rounded aperture, and a horny multispiral operculum."
Turritella has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings tu & itella which should not be misspelled with single 'R'
Wrong Spelling:  tu-r-itella  Correct Spelling:  tu-rr-itella 
Check more misspelled words of Turritella to spell it correct.