Phylum Acanthocephala Kohlreuther, 1771 - acanthocephalans see [unranked] Acanthocephala Kohlreuther, 1771 Class Eoacanthocephala Van Cleave, 1936 Order Neoechinorhynchida Southwell & Macfie, 1925 1 Family Neoechinorhynchidae Van Cleave, 1919 2 Family Tenuisentidae Van Cleave, 1936