A less likely candidate mother would be the genus Scyliorhinus, which also has a fossil record stretching back to the Eocene.
The boa catshark, Scyliorhinus boa, is a cat shark of the family Scyliorhinidae found on the continental shelves and insular slopes of the Caribbean Sea and the Gulf of Mexico between latitudes 20° N and 9° N, at depths of between 330 and 675 m.
The brownspotted catshark, Scyliorhinus garmani, is a rare cat shark of the family Scyliorhinidae found in the Indo-West Pacific between latitudes 11° N and 12° S.
The freckled catshark, Scyliorhinus haeckelii, is a cat shark of the family Scyliorhinidae found on the continental shelf and upper slope from the western Atlantic from western Venezuela, Suriname, Brazil, and Uruguay between latitudes 11° N and 32° S.
The polkadot catshark, Scyliorhinus besnardi, is a cat shark of the family Scyliorhinidae found on the outer continental shelf off northern Uruguay between latitudes 31° S and 39° S, at depths of between 140 and 190 m.
The West African catshark, Scyliorhinus cervigoni, is a cat shark of the family Scyliorhinidae found from the eastern Atlantic between latitudes 20° N and 17° S, at depths between 45 and 500 m.
The whitesaddled catshark, Scyliorhinus hesperius, is a species of catshark, family Scyliorhinidae, found on the upper continental slope of the western central Atlantic from Honduras, Panama, and Colombia between latitudes 22° N and 9° N, at depths of between 275 and 460 m.
The yellowspotted catshark, Scyliorhinus capensis, is a rare cat shark of the family Scyliorhinidae found in the southeast Atlantic from Lüderitz, Namibia to central Natal, South Africa between latitudes 0° and 37° S.