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Oligochaeta (/ ˌ ɒ l ɪ ɡ ə ˈ k iː t ə,-ɡ oʊ-/) [1] is a subclass of soft-bodied animals in the phylum Annelida, which is made up of many types of aquatic and terrestrial worms, including all of the various earthworms.
Hirudinea is monophyletic, but the clade is embedded among the Oligochaeta. Two approaches are possible: [11] abolish Oligochaeta as traditionally delimited in favor of a number of smaller monophyletic lineages [11] treat Oligochaeta and Clitellata as synonymous while splitting up the traditional "oligochaetes" into monophyletic lineages. [11]
An earthworm is a soil-dwelling terrestrial invertebrate that belongs to the phylum Annelida.The term is the common name for the largest members of the class (or subclass, depending on the author) Oligochaeta.
Oligochaeta is a genus of Asian flowering plants in the tribe Cardueae within the family Asteraceae. [2] [3] [4] Oligochaeta is native to central, southern, and southwestern Asia. They are annual plants that grow in mountain and steppe habitat. [5]
The Lumbriculidae are a family of microdrile oligochaetes common in freshwater environments, including streams, lakes, marshes, wells and groundwater. They should not be confused with the earthworm family Lumbricidae.
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It is classified in the family Naididae (subfamily Naidinae) in the order Oligochaeta. These are ca. 2–25 mm long transparent worms that are very common in fresh water and often form chains of individuals through asexual multiplication.
The Haplotaxida are one of two orders within the annelid subclass Oligochaeta, the other being the Lumbriculida. [1] No real common name exists, but they are simply referred to as haplotaxids. Given that the other clitellatan annelids are embedded between and around the Haplotaxida and Lumbriculida, the traditional Oligochaeta are a ...