See text Delphinoidea is the largest group of toothed whales, including 66 genera in 6 families.

The largest living member of the superfamily is the orca, which can reach 6 tons, while the smallest is the vaquita.

This includes the species of genus Odobenocetops and Odobenus rosmarus[2].

While also having two types of genus, they also have individual genomes with about 9 species across the three main families of the Delphinoidea.

The three main families of the whale are the Delphinidae, Monodontidae and  Phocoenidae.