Eulamellibranchia
Eulamellibranchia
[¦yü·lə‚mel·ə′braŋ·kē·ə] (invertebrate zoology)
The largest subclass of the molluscan class Bivalvia, having a heterodont shell hinge, leaflike gills, and well-developed siphons.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.