Haplotaxida

Taxobox
name = Haplotaxida

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image_width = 250px
image_caption = Lumbricus terrestris, the Common European Earthworm
regnum = Animalia
phylum = Annelida
classis = Clitellata
subclassis = Oligochaeta
ordo = Haplotaxida
subdivision_ranks = Families
subdivision = Suborder Haplotaxina
Haplotaxidae
Suborder Moniligastrina
Moniligastridae
Suborder Lumbricina
Alluroididae
Eudrilidae
Glossoscolecidae
Lumbricidae
Hormogastridae
Ailoscolidae
Lutodrilidae
Sparganophilidae
Criodrilidae
Ocnerodrilidae
Acanthodrilidae
Octochaetidae
Exxidae
Megascolecidae
Microchaetidae
Eudrilidae
Suborder Tubificina
Dorydrilidae
Enchytraeidae
Naididae (including Tubificidae)
Opistocystidae
Phreodrilidae
The Haplotaxida is one of two orders within the subclass oligochaeta, the other being the lumbriculida it is also related with the earthworm.