Shells of fossil testate amoebae isolated from lake sediments in England and Canada have organic cement matrices similar to those possessed by Recent specimens. The surface patterns of individual building units can be useful taxonomic features for confirming the identification of the many species of Difflugiidae found in these environments.
- Received December 1, 1987.
- Revision received April 1, 1988.
- © 1988 The Micropalaeontological Society