Claim: Haplocochlias cubensis is a species mollusk under the Skeneidae, a family of small shells that lack a nacreous structure, of the order Trochida.
Evidence: Haplocochlias cubensis is a species of sea snail, a marine gastropod mollusk in the family Skeneidae. Order: Trochida This family is assemblage of small to very small shells that lack a nacreous structure. 
Phylum: Mollusca Family: Skeneidae Order: Trochida This family is assemblage of small to very small shells that lack a nacreous structure.