
Neopilina is a highly derived genus of modern monoplacophoran. Some molecular results show that they fall within the polyplacophoran clade, although these have been called into question. Fossil and morphological data show that they are rather derived and bear very little resemblance to an `ancestral mollusc`. == Anatomy == Its anatomy led resear.....
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http://en.wikipedia.org/wiki/Neopilina

any primitive mollusk of the genus Neopilina, having a serial repetition of internal organs that suggests a close relationship to the annelids.
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https://www.infoplease.com/dictionary/neopilina
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