Gray J.E., 1824
Shell subtriangular or oval in outline, smooth, tumid; equivalve, inequilateral, with umbones well to posterior of midline. Hinge line with taxodont teeth in two distinct series, anterior more numerous than posterior. Ligament internal, in an elliptical chondrophore, below and just in front of beaks. Adductor muscle
scars about equal; pallial line faint, without a sinus.
Source: Hayward, 1990.
The following subtaxa of this family occur in the region:
Genus Nucula
Nucula hanleyi
Nucula nitidosa
Nucula nucleus
Nucula sulcata
Genus Nuculoma
Nuculoma tenuis