Imparidentia is a major clade of
bivalves
Bivalvia () or bivalves, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of aquatic molluscs (marine and freshwater) that have laterally compressed soft bodies enclosed by a calcified exoskeleton consis ...
.
Imparidentia was named by Bieler, Mikkelsen, and Giribet in 2014 to refer to a clade, commonly recovered in phylogenetic analyses, consisting of
euheterodonts other than
anomalodesmatans. The name comes from Latin ''impar'' "unequal" and ''dens'' "tooth", in reference to the unequal
hinge teeth
Hinge teeth are part of the anatomical structure of the inner surface of a bivalve shell, i.e. the shell of a bivalve mollusk. Bivalves by definition have two valves, which are joined together by a strong and flexible ligament situated on the hin ...
seen in members of the clade.
The relationships among members of Imparidentia are uncertain.
References
Bivalve taxonomy
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