Ceritellidae
(tree size 2)
Nerineidae
(tree size 57)
Nerinellidae
(tree size 7)
Itieriidae
(tree size 2)
Phaneroptyxisidae
Dalmateidae
Fibulotyxisidae
Elatioriellidae
Auroraellidae
Elegantellidae
Triptyxisidae
Polyptyxisidae
Fibuloptygmatidae
Upellidae
Bactroptyxisidae
Aptyxiellidae
Eunerineidae
Ptygmatididae
Pseudonerineidae
(tree size 4)