The Scaphopoda are a distinctive group of commonly known as the "tusk shells" because their shells are conical and slightly curved to the dorsal side, making the shells look like tiny tusks (see the photos below).

The Scaphopoda are a distinctive group of molluscs commonly known as the "tusk shells" because their shells are conical and slightly curved to the dorsal side, making the shells look like tiny tusks (see the photos below).

Scaphopoda / skæˈfɒpədə / (plural scaphopods / ˈskæfəpɒdz /, from Ancient Greek σκᾰ́φης skáphē "boat" and πούς poús "foot"), whose members are also known as tusk shells or tooth shells, are a class of shelled marine invertebrates belonging to the phylum Mollusca with worldwide distribution and are the only class of exclusively infaunal marine mo...

2002年1月1日 · The Scaphopoda are marine infaunal carnivores that feed on foraminiferans and other microorganisms selected and manipulated by their unique feeding tentacles or captacula. Their tusk-like shell is open at both ends; the burrowing foot and captacula protrude anteriorly, while respiratory currents pass through the posterior opening.

Scaphopods are all ma­rine species whose habi­tat ranges from shal­low sub-lit­toral areas up to wa­ters that are 4570 m deep. Most scaphopods are found in wa­ters greater than 6 m. Scaphopods bur­row in sed­i­ments rang­ing from muds to medium-coarse gravel. The two or­ders of this group may have slightly dif­fer­ing bur­row­ing be­hav­iors.

2020年8月18日 · The Scaphopoda are small but interesting class of molluscs. Their common name is Tusk Shells because the curved, hollow and cylindrical shells resemble small tusks. …

Scaphopods are fully marine animals—avoiding estuaries and any fresh water—and the only class of the Mollusca that is exclusively infaunal, using the “shovel-foot,” like the bivalves, as a means of locomotion. The slender ciliated captaculae are used for catching a variety of marine animals, mainly foraminifera.

(sca-phoda: from the Latin scaphe=boat , and pous=foot: boat - foot!) All scaphoda species, a mere 200 or so, are marine inhabitants that live partially buried in sand or gravel all their lives. The tusk or tooth shells, as they are more commonly known, have the simplest shell structure and anatomy of all the molluscs.

2022年8月23日 · Scaphopods (from Greek σκάϕος boat and πόδι foot) are exclusively marine conch mollusks that live sunken in the incoherent sediments, sandy or muddy, protruding from the bottom with their upper part; the shell is tubular, cylindrical, more or less curved, reminiscent of elephantine tusks.

The Scaphopoda are marine infaunal carnivores that feed on foraminiferans and other microorganisms selected and manipulated by their unique feeding tentacles or captacula. Their tusk-like shell is open at both ends; the burrowing foot and captacula protrude anteriorly, while respiratory currents pass through the posterior opening.