Archaeocopida

Archaeocopida

[‚ärk·ē·ə′käp·ə·də]
(paleontology)
An order of Cambrian crustaceans in the subclass Ostracoda characterized by only slight calcification of the carapace.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.