Trimerellacea

Trimerellacea

[trə‚mer·ə′lās·ē·ə]
(paleontology)
A superfamily of extinct inarticulate brachiopods in the order Lingulida; they have valves, usually consisting of calcium carbonate.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.