Class Scaphopoda
- Information from the Animal Diversity Web on these molluscs, their habitat, systematic and taxonomic history, physical description, reproduction and behavior.
- http://animaldiversity.ummz.umich.edu/site/accounts/information/Scaphopoda.html

Introduction to the Scaphopoda
- Information about biology of the tusk shells, with illustrations and links.
- http://www.ucmp.berkeley.edu/mollusca/scaphs/scaphopoda.html

The Scaphopod Page
- Information and resources pertaining to research on scaphopods and other molluscan taxa.
- http://academics.hamilton.edu/biology/preynold/Scaphopoda/