Tesselata or Tessellata: How To spell?

The word Tesselata is misspelled against Tessellata, a noun meaning "A division of Crinoidea including numerous fossil species in which the body is covered with tessellated plates."

Tessellata has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings tesse & ata which should not be misspelled with single 'L'
Wrong Spelling:  tesse-l-ata 
Correct Spelling:  tesse-ll-ata 
Explore spell check of Tessellata to spell without errors.