Anopla

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Class: Anopla (when the proboscis has no stylets: the mouth is below or behind the brain.)

Order: Palaeonemertea (ex: Cephalothrix, Tubulanus)The nerve cords are peripheral and the worms have many simple features.

Order: Heteronemertea ex: Italic textLineus, CerebratulusItalic text) These are the largest and most muscular nemertines; the main muscle layer is the outer longitudinal one.


Source: Moore, Janet. An introduction to the invertebrates. Studies in Biology. Cambridge University Press 2001.

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