Scaphopoda: the tusk shells
Reynolds, P.D. (2006). Scaphopoda: the tusk shells, in: Sturm, C.F. et al. (Ed.) The mollusks: a guide to their study, collection, and preservation. pp. 229-237
In: Sturm, C.F.; Pearce, T.A.; Valdés, Á. (Ed.) (2006). The mollusks: A guide to their study, collection, and preservation. American Malacological Society/Universal Publishers: Pittsburgh. ISBN 978-1-58112-93-0. 445 pp., more
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