Definitions
Free margin
- (Taxon-specific: Class Ostracoda) All parts of margin except hingement. [McLaughlin, 1980]
- (Taxon-specific: Class Ostracoda) Margin. [Stachowitsch, 1992]
- (Taxon-specific: Class Ostracoda) The perimeter of the valves (exclusive of the hinge region) where valves are in contact. [Cohen, Peterson, and Maddocks, in press]