Newton, 1922
Shell equivalve, equilateral, umbones situated on midline. Ligament external, in a narrow, elongate cardinal area. Hinge teeth in a continuous series in young shells, separated by a smooth area below umbones in older individuals. Adductor muscle scars about equal, no pallial sinus.
Source: Hayward, 1990.
The following subtaxa of this family occur in the region:
Genus Glycymeris
Glycymeris glycymeris