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Cyclophyllidea
	Taenia saginata
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Platyhelminthes
Class:	Cestoda
Subclass:	Eucestoda
Order:	Cyclophyllidea
Families
	See text
Synonyms
	Aporidea

Tapeworms of the order Cyclophyllidea (the cyclophyllid cestodes) are the most important cestode parasites of humans and domesticated animals. All have multiple proglottid "segments", and all have four suckers on their scolices (heads), though some may have other structures, as well. Proglottids of this order have genital openings on one side (except in the Dilepididae, which have genital openings on both sides), and a compact yolk gland or vitellarium posterior to the ovary.

Families include:^[1]

Dipylidiidae, the most important member of which is Dipylidium caninum, also called the "cucumber tapeworm" or the "double-pore tapeworm"
Hymenolepididae, including the genus Hymenolepis, a human parasite
Taeniidae, which consists of livestock parasites in the genus Taenia and parasites that encyst in humans of the genus Echinococcus
Anoplocephalidae, which includes several tapeworms of horses and a genus of tapeworms of ruminants, the Moniezia
Davaineidae, which comprises 14 genera, most of which are parasites of birds
Acoleidae, which comprises two genera that parasitize birds
Amabiliidae, comprising four genera that parasitize aquatic birds
Dilepididae, comprising 24 or so genera
Diploposthidae
Gryporhynchidae
Nematotaeniidae
Progynotaeniidae
Schistotaeniidae