(d) Univalvia absque spira regulari: Patella, Dentalium, Serpula, Teredo, Sabella.
A similar modification of the velum occurs in Dentalium and in Myzomenia among the Amphineura.
An additional class was instituted for the reception of Dentalium and its few allies, and for this class Bronn's name Scaphopoda was used.
" Anomia " (1854), " Mytilus " (1856), " Dentalium " (1856-1857), " Purpura " (1859), " Haliotis (1859), " Vermetus " (1860).
At first supposed to be tubicolous Annelids, Dentalium and its allies were afterwards placed among the Gastropoda, to which recent authorities consider them to be closely related.
Both the vernacular name, "tooth shell," and the Latin name, Dentalium, refer to the resemblance of the shell to a long tooth.
- Diagram of the Organization of Dentalium, Left-side View.
- Dentalium vulgare, Da A, Ventral view of the animal removed from its shell.
Um, aged one and to a depth of 2500 fathoms. Fossil remains Dentalium, a half days; ventral are first found in the Silurian, but become most abundant from the Cretaceous onwards.
Dentalium: posterior aperture of shell entire, without incision.
1883); Boissevain, "Beitrage zur Anatomie and Histologie von Dentalium," Jenaische Zeitschr.