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| Hobby Forum Index » Aquaria » Heteronemertea |
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| Troy Mangum |
 Posted: Wed Sep 12, 2007 8:27 pm |
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Guest
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Heteronemertea is a monophyletic order of about 500 species, containing
genera such as Lineus and Cerebratulus and including the largest and most
muscular nemerteans. 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.
--http://en.wikipedia.org/wiki/Heteronemertea--
== Troy Mangum == |
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