Psammettidae

Psammettidae

[sə′med·ə‚dē]
(invertebrate zoology)
A family of Psamminida, with a strongly built test, haphazardly arranged xenophyae, no specialized surface layer, and no large openings in the test.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.