The living members of this family had never been observed until recent years, and were only know from fossil shells, which had previously been thought to be remains of a somewhat unusual bivalve mollusk, not a gastropod at all.
The fossil shells were thought to be remains of a somewhat unusual bivalve mollusk, not a gastropod at all. The living members of this family had never been noticed until recent years.
The living members of this family had never been noticed until recent years. The fossil shells were thought to be remains of a somewhat unusual bivalve mollusk, not a gastropod at all.
The living members of this family had never been noticed until recent years. The fossil shells were thought to be remains of a somewhat unusual bivalve mollusk, not a gastropod at all.