scaphopoda
Sca*phop"o*da, n. pl. Etym: [NL., from Gr. -poda.] (Zoöl.) Defn: A class of marine cephalate Mollusca having a tubular shell open at both ends, a pointed or spadelike foot for burrowing, and many long, slender, prehensile oral tentacles. It includes Dentalium, or the tooth shells, and other similar shells. Called also Prosopocephala, and Solenoconcha.