Eukaryota  >  Metazoa  >  Acanthocephala  >  Palaeacanthocephala

Family	Genus	Species
Arhythmacanthidae	2	6
Cavisomatidae	1	1
Cavisomidae	4	12
Centrorhynchidae	2	15
Diplosentidae	1	1
Echinorhynchidae	2	41
Heteracanthocephalidae	1	2
Leptorhynchoididae	8	17
Plagiorhynchidae	2	7
Polymorphidae	13	93
Pomphorhynchidae	4	19
Pseudoacanthocephalidae	1	12
Rhadinorhynchidae	8	38
Transvenidae	3	7