How Do You Spell Mollusca?

How Do You Spell Mollusca? the phylum comprising the mollusks. Which is correct molluscs or mollusks? Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda. The members are known as molluscs or mollusks (/ˈmɒləsk/). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000