DENTALIUM is validvalid

a mollusk with long, tapering shell [n DENTALIA, DENTALIUMS]

96,107 of 196,601 in NWL2023·also valid in CSW24

(Latin) any mollusc or shell of the genus Dentalium, of scaphopod molluscs whose shells resemble an elephant's tusk [n DENTALIA or DENTALIUMS]