Children (9 direct children, 9 direct and indirect children):
Smallmouth velvet dogfish
Scymnodon obscurus
Knifetooth dogfish
Scymnodon ringens
Scymnodon squamulasus
Scymnodon niger
Scymnodon plunketi
Scymnodon ichiharai
Scymnodon macracanthus
Scymnodon sherwoodi
Scymnodon squamulosus