Bivalvia: Béda antara owahan

 

== Sistematika ==

<!-- Due to classification schemes using single organ systems to draw phylogenies, as well as numerous naming schemes, many conflicts have arisen. More recent systems combine multiple organ systems, fossil records, as well as molecular data to draw more robust phylogenies.

The systematic layout presented here is according to Newell's 1965 classification based on hinge teeth morphology. There exists no robust phylogeny, and due to the plethora of [[fossil]] lineages, [[DNA sequence]] data is only of limited use should the [[subclass]]es turn out to be [[paraphyletic]]. The [[monophyly]] of the Anomalodesmata is especially disputed, but this is of less consequence as that group does not include higher-level prehistoric [[taxa]]. It is, however, currently accepted that Anomalodesmata resides within the subclass Heterodonta.<ref>{{cite journal