Siphonodentalium colubridens

Siphonodentalium colubridens is a tusk shell or scaphopod in the family Gadilidae of the order Dentaliida. ^[1]

Siphonodentalium colubridens
illustration of Siphonodentalium colubridens, 15 × 2.5 mm.
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Scaphopoda
Order:	Gadilida
Family:	Gadilidae
Genus:	Siphonodentalium
Species:	S. colubridens
Binomial name
Siphonodentalium colubridens Watson, 1879
Synonyms
Cadulus colubridens R. B. Watson, 1879

This species was described from only one specimen collected in 1874 by the H.M.S. Challenger expedition.^[2] The original description and a drawing was published in 1879 by Robert Boog Watson, a Scottish malacologist who reported on the Scaphopoda and Gastropoda of the Challenger expedition. The specimen was collected at a depth of about 1300 m in ocean waters east of North Island, New Zealand.

The species is described as having a smooth, white shell, with a swelling below the anterior aperture and a length of 15 mm.^[2][3]