Eukaryota  >  Metazoa  >  Acanthocephala  >  Palaeacanthocephala

Family	Genus	Species
Arhythmacanthidae	2	5
Cavisomatidae	1	2
Cavisomidae	5	13
Centrorhynchidae	2	15
Diplosentidae	1	1
Echinorhynchidae	2	41
Heteracanthocephalidae	1	2
Leptorhynchoididae	8	17
Plagiorhynchidae	2	7
Polymorphidae	13	95
Pomphorhynchidae	4	19
Pseudoacanthocephalidae	1	13
Rhadinorhynchidae	8	39
Transvenidae	4	8