Children (22 direct children, 190 direct and indirect children):
Berthellina
(tree size 18)
Pleurobranchaea
(tree size 30)
Pleurobranchus
(tree size 49)
Berthella
(tree size 45)
Pleurobranchinae
(tree size 3)
Gymnotoplax
(tree size 5)
Bathyberthella
(tree size 4)
Pleurehdera
(tree size 1)
Tomthompsonia
(tree size 2)
Boreoberthella
(tree size 1)
Oscanius
(tree size 2)
Oscaniella
(tree size 5)
Pleurobranchella
(tree size 3)
Parabathyberthella
Polictenidia
Pleurobranchaeinae
Berthellinops
Bouvieria
Cleanthus
Pleurobranchopsis
Pseudolibania
Susania