Eukaryota  >  Metazoa  >  Acanthocephala  >  Palaeacanthocephala

Family	Genus	Species
Arhythmacanthidae	2	6
Cavisomatidae	1	2
Cavisomidae	5	13
Centrorhynchidae	2	16
Diplosentidae	1	1
Echinorhynchidae	2	41
Heteracanthocephalidae	1	2
Leptorhynchoididae	9	20
Plagiorhynchidae	2	7
Polymorphidae	13	102
Pomphorhynchidae	4	21
Pseudoacanthocephalidae	1	27
Rhadinorhynchidae	8	42
Transvenidae	4	8