Heteronemertea

Heteronemertea

Heteronemertea

Order of ribbon worms

Heteronemertea is a monophyletic order of about 500 species of nemertean worm. It contains genera such as Lineus and Cerebratulus, and includes the largest and most muscular nemerteans.

Quick Facts Scientific classification, Families ...

Almost all heteronemerteans have three primary body-wall muscle strata: an outer longitudinal, a middle circular, and an inner longitudinal. The lateral nerve cords are outside the circular muscle, as in palaeonemerteans, but separated from the epidermis by the usually well-developed outer longitudinal muscle.[1]

Illustration of Gorgonorhynchus repens, a species within the family Gorgonorhynchidae, discharging its proboscis in response to a perceived threat.

Taxonomy

Families within the order Heteronemertea include:[2]

References

  1. [1]
    Barnes, Robert D. (1982). Invertebrate Zoology. Philadelphia, PA: Holt-Saunders International. p. 261. ISBN 0-03-056747-5.
  2. [2]
    "WoRMS - World Register of Marine Species - Heteronemertea".


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This article uses material from the Wikipedia article Heteronemertea, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.